Home Crystal structure of fac-tricarbonyl(2-(isopropylimino)methyl-5-methylphenolatido-κ2N,O)(pyridine-κN)rhenium(I), C19H19N2O4Re
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Crystal structure of fac-tricarbonyl(2-(isopropylimino)methyl-5-methylphenolatido-κ2N,O)(pyridine-κN)rhenium(I), C19H19N2O4Re

  • Daniel Thabo Marake , Andreas Roodt and Alice Brink EMAIL logo
Published/Copyright: January 23, 2016

Abstract

C19H19N2O4Re, Monoclinic, P21/c (no. 14), a = 8.2805(3) Å, b = 13.7325(5) Å, c = 16.3560(6) Å, β = 92.431(2)°, V = 1858.2(2) Å3, Z = 4, Rgt(F) = 0.0347, wRref(F2) = 0.0930, T = 100 K.

CCDC no.:: 1443126

The crystal structure is shown in the figure, Tables 13 contain details of the measurement method and a list of the atoms including atomic coordinates and displacement parameters.

Table 1

Data collection and handling.

Crystal:Yellow, cuboid, size 0.348×0.479×0.631 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:65.65 cm−1
Diffractometer, scan mode:Bruker X8 ApexII 4K Kappa CCD, ω and φ
2θmax:56°
N(hkl)measured, N(hkl)unique:37950, 4473
N(param)refined:238
Programs:Bruker data collection and reduction software [21, 22], SIR-97 [23], Diamond [24], SHELX [25], WinGX [26]
Table 2

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomSitexyzUiso
H(1)4e0.41290.34770.54310.051
H(13)4e0.13640.66480.65790.054
H(15)4e0.13930.59100.41890.070
H(16)4e0.28560.45350.45350.063
H(21)4e0.43700.19380.69680.061
H(22A)4e0.71720.28720.64490.103
H(22B)4e0.71220.17680.67590.103
H(22C)4e0.67490.26370.73740.103
H(23A)4e0.53290.21940.53360.120
H(23B)4e0.35480.18620.55590.120
H(23C)4e0.50640.11780.57910.120
H(31)4e0.64850.40760.90220.063
H(32)4e0.90010.47720.91490.073
H(33)4e1.00510.56220.80460.070
H(34)4e0.84040.58430.68680.061
H(35)4e0.58390.51500.67900.054
H(14A)4e−0.01300.76110.56450.109
H(14B)4e−0.06390.71400.47770.109
H(14C)4e0.09700.77820.48770.109
Table 3

Atomic displacement parameters (Å2).

AtomSitexyzU11U22U33U12U13U23
Re(1)4e0.34541(2)0.38883(2)0.77833(2)0.0380(1)0.0373(1)0.0353(1)−0.00296(5)0.00348(9)0.00127(6)
O(1)4e0.2858(4)0.5197(2)0.7168(2)0.053(2)0.037(1)0.042(2)0.004(1)0.005(2)−0.004(1)
O(01)4e0.2372(5)0.4753(3)0.9398(2)0.077(3)0.088(2)0.048(2)0.005(2)0.013(2)−0.006(2)
O(02)4e0.4374(5)0.2083(2)0.8787(2)0.085(3)0.053(2)0.055(2)0.005(2)0.000(2)0.015(2)
O(03)4e0.0146(5)0.2943(3)0.7492(3)0.053(2)0.088(3)0.103(4)−0.027(2)−0.002(2)−0.005(2)
N(1)4e0.4124(4)0.3351(2)0.6595(2)0.038(2)0.035(2)0.041(2)0.001(1)0.002(2)−0.004(2)
N(3)4e0.5911(4)0.4554(2)0.7904(2)0.047(2)0.039(2)0.036(2)−0.005(1)0.006(2)0.002(1)
C(1)4e0.3785(6)0.3796(3)0.5908(3)0.050(3)0.038(2)0.041(3)0.003(2)0.009(2)−0.002(2)
C(01)4e0.2793(5)0.4430(3)0.8784(3)0.044(2)0.050(2)0.041(3)−0.002(2)0.001(2)0.000(2)
C(02)4e0.4063(5)0.2752(3)0.8396(3)0.049(3)0.047(2)0.043(3)−0.009(2)0.006(2)−0.001(2)
C(03)4e0.1375(6)0.3314(3)0.7607(3)0.047(3)0.052(2)0.051(3)−0.005(2)0.004(2)0.002(2)
C(11)4e0.2965(5)0.4704(3)0.5774(3)0.049(2)0.038(2)0.034(2)0.004(2)0.003(2)0.002(2)
C(12)4e0.2516(5)0.5347(3)0.6408(3)0.039(2)0.037(2)0.040(3)−0.004(2)0.008(2)−0.003(2)
C(13)4e0.1657(6)0.6202(3)0.6166(4)0.043(3)0.037(2)0.055(3)0.002(2)0.004(2)−0.002(2)
C(14)4e0.1229(6)0.6418(3)0.5372(3)0.053(3)0.041(2)0.055(3)0.007(2)−0.002(3)0.008(2)
C(15)4e0.1679(7)0.5775(3)0.4746(4)0.075(4)0.052(2)0.048(3)0.002(2)0.001(3)0.004(2)
C(16)4e0.2535(6)0.4956(3)0.4959(3)0.075(3)0.044(2)0.038(3)0.007(2)0.007(3)−0.001(2)
C(21)4e0.4899(6)0.2358(3)0.6558(3)0.061(3)0.033(2)0.059(3)0.006(2)0.007(3)0.003(2)
C(22)4e0.6631(6)0.2413(4)0.6806(5)0.059(3)0.053(3)0.094(5)0.012(2)−0.010(3)0.005(3)
C(23)4e0.4692(9)0.1853(4)0.5739(4)0.115(5)0.054(3)0.068(4)0.026(3)−0.016(4)−0.019(3)
C(31)4e0.6869(6)0.4445(3)0.8579(3)0.047(3)0.065(3)0.046(3)−0.006(2)−0.002(2)0.000(2)
C(32)4e0.8372(6)0.4845(4)0.8654(4)0.046(3)0.082(3)0.052(3)−0.006(2)−0.012(2)0.007(3)
C(33)4e0.8988(6)0.5360(4)0.8008(4)0.043(3)0.065(3)0.068(4)−0.009(2)0.002(3)−0.002(3)
C(34)4e0.8028(6)0.5481(3)0.7317(3)0.051(3)0.054(2)0.048(3)−0.008(2)0.007(2)0.003(2)
C(35)4e0.6497(5)0.5069(4)0.7275(3)0.047(3)0.053(2)0.036(3)−0.005(2)0.003(2)0.002(2)
C(141)4e0.0275(7)0.7315(3)0.5149(4)0.083(4)0.055(3)0.078(5)0.024(3)−0.009(3)0.012(3)

Source of material

2-(Isopropylimino)methyl-5-methylphenol (0.0363 g, 0.205 mmol) dissolved in methanol (5 ml) was added drop-wise to a methanol (5 ml) solution of fac-[NEt4]2[Re(CO)3Br3] [1] (0.150 g, 0.195 mmol). The yellow solution was stirred at 60 °C for 5 h. Pyridine (0.0154 g, 0.195 mmol) dissolved in methanol (5 ml) was added and the reaction stirred for a further 16 h. The solution was cooled to room temperature and allowed to evaporate slowly to give yellow crystals suitable for X-ray diffraction. (Crystalline yield: 0.0195 g, 19.1%). IR (KBr, cm−1): v(CO) = 2014, 1907, 1880. UV-Vis (nm, L mol−1 cm−1): λmax = 381.0, ϵ = 3.598 × 103. 1H NMR (600 MHz, Acetone-d6): δ = 8.71 (m, 2H, Ar), 8.39 (s, 1H, HC = N), 8.06 (tt, 1H, J = 1.8, 7.8 Hz, Ar), 7.58 (m, 2H, Ar), 7.12 (d, 1H, J = 8.4 Hz, Ar), 6.61 (s, 1H, Ar), 6.38 (d, 1H, J = 8.4 Hz, Ar), 4.32 (m, 1H, CH), 2.20 (s, 3H, CH3), 1.30 (dd, 6H, J = 6.6 Hz, 2 × CH3), 3.51 (q, J = 7.2 Hz, Et4N+), 1.40 (tt, J = 1.8, 7.2 Hz, Et4N+). 13C NMR (150 MHz, Acetone-d6): λ = 166.9, 164.6, 153.1, 146.4, 140.3, 136.5, 126.9, 122.8, 119.9, 117.4 (Ar), 67.8 (CH), 24.1, 23.5, 21.9 (CH3).

Experimental details

In the structure all the H atoms were positioned geometrically and refined discernibly using a riding model, with C—Hmethine = 1.00 Å; C—Hmethyl = 0.98 Å; C—Haromatic = 0.95 Å. The H atom isotropic displacement parameters were fixed to Uiso(H) = 1.2Ueq(C). The methyl groups were generated to fit the difference electron density and the groups were then refined as rigid rotors. The very strong reflection (002) was caused by overflow and was deleted.

Discussion

Tricarbonyl aqua complexes of the type fac-[M(CO)3(H2O)3]+ (M = Re(I), Tc(I)) have displayed numerous attractive attributes over the past 20 odd years as precursors for the development of new radiopharmaceutical agents [1–7]. The three water molecules bound to the metal ion are relatively labile and can thus be easily substituted by a range of mono-, bi-, tridentate ligands and a combination thereof. This study focused on labelling Schiff-base ligands using the [2+1] mixed ligand approach [8] with the fac-[ReI(CO)3]+ core. Our interest in Schiff-bases was prompted by their relative ease of formation, stability and great versatility in allowing for fine tuning of the steric and electronic character of the ligand [9]. The asymmetric unit contains one complete molecule of the metal complex. The crystal structure consists of three carbonyl ligands facially coordinated to the rhenium center. The Schiff-base ligand, 2-(isopropylimino)methyl-5-methylphenolate, coordinates to the rhenium ion in a bidentate manner with the last coordination site being occupied by the nitrogen donor atom of the pyridine ligand. The octahedral environment around the rhenium center is slightly distorted as indicated by the CO1—Re1—CO2 and CO3—Re1—N3 angles of 86.95(19)° and 176.37(19)° respectively. The N1—Re1—O1 bite angle of 85.73(12)° compares well to the bite angles (83.49–86.36°) of other related salicylidene type Schiff-base ligands which form six membered ring systems upon coordination to Re centers [10–12]. There is a significant difference between the N1—Re1—O1 bite angle and the observed bite angles (75.25–76.24°) in other N,O, N,N′ and O,O′ bidentate ligands which form five-membered ring systems with Re center [13]. The Re1—O1 and Re1—N1 bond lengths of 2.107(3) Å and 2.173(3) Å compares well to related salicylidene structures with bond lengths varying from 2.093–2.155 Å for Re—O and 2.148–2.198 Å for Re—N [10, 14–17]. The Re1—N3 bond length of 2.231(4) Å compares well to related salicylidene structures with Re-Npyridine bond lengths ranging from 2.203–2.230 Å [10, 14, 17], as well as to other N,O and O,O′ ligand-to-metal structures with Re-Npyridine bond lengths varying from 2.203–2.334 Å [13, 18–20]. The pyridine ligand is slightly bent towards the bidentate ligand with N3—Re1—O1 angle of 83.44(12)°. The same bending is also observed in reported structures with N—Re—O angles ranging from 80.85–85.55° [10, 13, 16, 17, 19, 20]. The crystal structure is stabilized by an intramolecular non-classical hydrogen bond which exists between the pyridine atoms C35—H35 and the phenolatido oxygen atom O1.


Corresponding author: Alice Brink, Department of Chemistry, University of the Free State, P.O. Box 339, Bloemfontein, 9300, South Africa, e-mail:

Acknowledgements:

Financial assistance from the University of the Free State and the South African National Research Foundation (UID: 84266) is gratefully acknowledged.

References

1. Alberto, R.; Schibli, R.; Schubiger, P. A.; Abram, U.; Kaden, T. A.: Reactions with the technetium and rhenium carbonyl complexes (NEt4)2[MX3(CO)3]. Synthesis and structure of [Tc(CN-But)3(CO)3](NO3) and (NEt4)[Tc2(μ-SCH2CH2OH)3(CO)6]. Polyhedron. 15 (1996) 1079–1089..10.1016/0277-5387(95)00361-4Search in Google Scholar

2. Abram, U.; Abram, S.; Alberto, R.; Schibli, R.: Ligand exchange reactions starting from [Re(CO)3Br3]2−. Synthesis, characterization and structures of rhenium(I) tricarbonyl complexes with thiourea and thiourea derivatives. Inorg. Chim. Acta. 248 (1996) 193–202.10.1016/0020-1693(96)05014-1Search in Google Scholar

3. Alberto, R,; Schibli, R.; Waibel, R.; Abram, U.; Schubiger, A. P.: Basic aqueous chemistry of [M(OH2)3(CO)3]+ (M = Re, Tc) directed towards radiopharmaceutical application. Coord. Chem. Rev. 190–192 (1999) 901–919.10.1016/S0010-8545(99)00128-9Search in Google Scholar

4. Schibli, R.; Alberto, R.; Abram, U.; Abram, S.; Egli, A.; Schubiger, P. A.; Kaden T. A.: Structural and 99Tc NMR Investigations of Complexes with fac-[Tc(CO)3]+ Moieties and Macrocyclic Thioethers of Various Ring Sizes: Synthesis and X-ray Structure of the Complexes fac-[Tc(9-ane-S3)(CO)3]Br, fac-[Tc2(tosylate)2(18-ane-S6)(CO)6], and fac-[Tc2(20-ane-S6-OH)(CO)6][tosylate]2. Inorg. Chem. 37 (1998) 3509–3516.10.1021/ic980112fSearch in Google Scholar

5. Waibel, R.; Alberto, R.; Willuda, J.; Finnern, R.; Schibli, R.; Stichelberger, A.; Egli, A.; Abram, U.; Mach, J. P.; Plueckthun, A.; Schubiger, P. A.: Stable one-step technetium-99m labeling of His-tagged recombinant proteins with a novel Tc(I)–carbonyl complex. Nature Biotechnol. 17 (1999) 897–901.10.1038/12890Search in Google Scholar

6. Alberto, R.; Schibli, R.; Abram, U.; Johannsen, B.; Pietzsch, H. J.; Schubiger, P. A.: First application of fac-[99mTc(OH2)3(CO)3]+ in bioorganometallic chemistry: design, structure, and in vitro affinity of a 5-HT1A receptor ligand labeled with 99mTc. J. Am. Chem. Soc. 25 (1999) 6076–6077.10.1021/ja990765aSearch in Google Scholar

7. Spingler, B.; Mundwiler, S.; Ruiz-Sanchez, P.; van Staveren, D. R.; Alberto, R.: Structures of the b- and d-acid derivatives of vitamin B12 and their complexes with [M(CO)3]+ (M = 99mTc, Re). Eur. J. Inorg. Chem. 18 (2007) 2641–2647.10.1002/ejic.200601195Search in Google Scholar

8. Mundwiler, S.; Kündig, M.; Ortner, K.; Alberto, R.: A new [2 + 1] mixed ligand concept based on [99mTc(OH2)3(CO)3]+: a basic study. Dalton Trans. (2004) 1320–1328.10.1039/B400220BSearch in Google Scholar

9. Brink, A.; Visser, H. G.; Roodt, A.: Solid state isostructural behavior and quantified limiting substitution kinetics in Schiff-Base bidentate ligand complexes fac-[Re(O,N-Bid)(CO)3(MeOH)]n. Inorg. Chem. 53 (2014) 12480–12488.10.1021/ic5019168Search in Google Scholar

10. Brink, A.; Visser, H. G.; Roodt, A.: Synthesis, crystallographic, and theoretical investigation of fac-[ReI(salen)(CO)3(S)] complexes, salen = monocharged bidentate Schiff-base and S = pyridine, CH3OH. J. Coord. Chem. 64 (2011) 122–133.10.1080/00958972.2010.538050Search in Google Scholar

11. Brink, A.; Visser, H. G.; Roodt, A.: Novel imino rhenium(I) tricarbonyl complexes of salicylidene-derived ligands: Synthesis, X-ray crystallographic studies, spectroscopic characterization and DFT calculations. Polyhedron. 52 (2013) 416–423.10.1016/j.poly.2012.08.059Search in Google Scholar

12. Brink, A.; Visser, H. G.; Roodt, A.: Activation of rhenium(i) toward substitution in fac-[Re(N,O′-Bid)(CO)3(HOCH3)] by Schiff-base bidentate ligands (N,O′-Bid). Inorg. Chem. 52 (2013) 8950–8961.10.1021/ic401115jSearch in Google Scholar

13. Schutte, M.; Kemp, G.; Visser, H. G.: Tuning the reactivity in classic low-spin d6 rhenium(i) tricarbonyl radiopharmaceutical synthon by selective bidentate ligand variation (L,L′-Bid; L,L′ = N,N′, N,O, and O,O′ Donor Atom Sets) in fac-[Re(CO)3(L,L′-Bid)(MeOH)]n complexes. Inorg. Chem. 50 (2011) 12486–12408.10.1021/ic2013792Search in Google Scholar

14. Faller, J. W.; Mason, G.; Parr, J.: The synthesis of new complexes of rhenium(I) with heterotridentate [P,N,O] ligands. J. Organomet. Chem. 626 (2001) 181–185.10.1016/S0022-328X(01)00699-4Search in Google Scholar

15. Li, Z. K.; Li, Y.; Lei, L.; Che, C. M.; Zhou, X. G.: Synthesis, structure and catalytic properties of Re(I)-NOBIN Schiff base complex. Inorg. Chem. Commun. 8 (2005) 307–309.10.1016/j.inoche.2004.12.020Search in Google Scholar

16. Czerwieniec, R.; Kapturkiewicz, A.; Anulewicz-Ostrowska, R.; Nowacki, J.: ReI(CO)3+ complexes with μ-N,O-bidentate ligands. J. Chem. Soc., Dalton Trans. (2002) 3434–3441.10.1039/B204020DSearch in Google Scholar

17. Ju, C. C.; Zhang, A. G.; Sun, H. L.; Wang, K. Z.; Jiang, W. L.; Bian, Z. G.; Huang, C. H.: Synthesis, crystal structure, and optical and photoelectrochemical properties of a μ-N,O- Rhenium(I) complex. Organomet. 30 (2011) 712–716.10.1021/om100311bSearch in Google Scholar

18. Schutte, M.; Roodt, A.; Visser, H. G.: Coordinated aqua vs methanol substitution kinetics in fac-Re(I) tricarbonyl tropolonato complexes. Inorg. Chem. 51 (2012) 11996–12006.10.1021/ic301891uSearch in Google Scholar

19. Schutte-Smith, M.; Muller, T. J.; Visser, H. G.; Roodt, A.: Distorted octahedral environments in tricarbonylrhenium(I) complexes of 5-[2-(2,4,6-tri-methyl-phenyl)diazen-1-yl]quinolin-8-olate and 5,7-bis-[2-(2-methyl-phenyl)diazen-1-yl]quinolin-8-olate. Acta Cryst. C69 (2013) 1467–1471.10.1107/S0108270113027947Search in Google Scholar

20. Manicum, A.; Schutte-Smith, M.; Kemp, G.; Visser, H. G.: Illustration of the electronic influence of coordinated β-diketone type ligands: A kinetic and structural study. Polyhedron. 85 (2015) 190–195.10.1016/j.poly.2014.08.005Search in Google Scholar

21. Bruker APEX2 (Version 1.0–27). Bruker AXS Inc., Madison, Wisconsin, USA 2012.Search in Google Scholar

22. Bruker SAINT-Plus (Version 7.12) and SADABS (Version 2004/1). Bruker AXS Inc., Madison, Wisconsin, USA 2012.Search in Google Scholar

23. Altomare, A.; Burla, M. C.; Camalli, M.; Cascarano, G. L.; Giacovazzo, C.; Guagliardi, A.; Moliterni, A. G. G.; Polidori, G.; Spagna, R.: SIR97: a new tool for crystal structure determination and refinement. J. Appl. Crystallogr. 32 (1999) 115–119.10.1107/S0021889898007717Search in Google Scholar

24. Brandenburg, K.; Putz, H. DIAMOND. Release 3.0c. Crystal Impact GbR, Bonn, Germany 2005.Search in Google Scholar

25. Sheldrick, G. M.: A short history of SHELX. Acta Crystallogr. A64 (2008) 112–122.10.1107/S0108767307043930Search in Google Scholar PubMed

26. Farrugia, L. J.: WinGX suite for small-molecule single-crystal crystallography. J. Appl. Cryst. 45 (2012) 849–854.10.1107/S0021889812029111Search in Google Scholar

Received: 2015-5-29
Accepted: 2015-12-17
Published Online: 2016-1-23
Published in Print: 2016-3-1

©2016 Daniel Thabo Marake et al., published by De Gruyter.

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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  27. Crystal structure of bis(2-hydroxy-2-phenylacetato-κ2O,O′)bis(pyridine-κN)nickel(II), C26H24N2NiO6
  28. Crystal structure of (E)-4-nitro-2-(((3-(tetrahydro-8λ4-[1,3,2]oxazaborolo[2,3-b][1,3,2]oxaborol-8-yl)phenyl)imino)methyl)phenol – water (1/2), C17H18BN3O5·2H2O
  29. Crystal structure of 5-(4-carboxyphenoxy)-nicotinic acid, C13H9NO5
  30. Crystal structure of catena-poly[hexaaquabis(μ2-3-nitrophthalate-κ2O:O′)-(μ2-1,4-bis(4-pyridylmethyl)piperazine-κ2N:N′)dimanganese(II)] dihydrate, C32H42Mn2N6O20
  31. Crystal structure of diaquabis(bicyclo[2.2.1]hept-5-ene-2,3-dicarboxylate-κ4O, O′:/O′′,O′′′)bis-(2,2′-bipyridine-κ2N, N′)dicadmium(II) hydrate
  32. Crystal structure of (R)-1-(1-(6-fluorobenzo[d]thiazol-2-yl)ethyl)-3-phenylthiourea
  33. Crystal structure of poly[(μ2-1,4-bis((1H-imidiazol-1-yl)methyl)benzene-κ2N:N′)-(μ2-4,4′-(1,2-phenylenebis(oxy)dibenzoato-κ4O,O′:O′′,O′′′)nickel(II)], C34H26O6N4Ni
  34. Crystal structure of 3′,4′,5-trihydroxy-3,7-dimethoxyflavone, C17H14O7
  35. Crystal structure of n-butyl-chlorido-bis[N-sec-butyl,N-n-propyl-carbamodithioato κ2S,S′]-tin(IV), C20H41ClN2S4Sn
  36. Crystal structure of poly[bis(μ4-4,4′-(1,2-phenylenebis(oxy))dibenzoato-κ4O:O′:O′′:O′′′)bis(μ3-4,4′-(1,2-phenylenebis(oxy))dibenzoato–κ3O:O′:O′′)(μ2-1-(4-((1H-imidazol-1-yl)methyl)benzyl)-1H-imidazole-κ2N:N′)tetracobalt(II)], C94H62O24N4Co4
  37. Crystal structure of catenapoly[diaqua-(μ24,4′-bipyridine)-κ2N:N′)-bis(2,6-difluorobenzoate)-κO)nickel(II)] ethanol monosolvate, C28H30F4N2O8Ni
  38. Crystal structure of 2-(9H-fluoren-9-ylidene)hydrazine-1-carbothioamide, C14H11N3S
  39. Crystal structure of 2-(4-methoxyphenyl)-2,3-dihydro-1H-perimidine, C18H16N2O
  40. Crystal structure of catena-poly[diaquabis(μ2-3-carboxybenzene-1,2-dicarboxylato-1:2κ2O:O′)-(μ2-1,4-bis(2-ethylbenzimidazol-1-ylmethyl)-benzene-1:1′κ2N:N′)dizinc(II)], [Zn2(C26H26N4)(C9H4O6)2(H2O)2]
  41. Crystal structure of diaquabis(phenoxyacetato-κ2O,O′)-zinc(II), C16H18O8Zn
  42. Crystal structure of 4-(1H-imidazol-1-yl)-6-pyrimidinylferrocene, C17H14FeN4
  43. Crystal structure of [2-(4-methoxyphenyl)pyrazine-κ2C,N) chlorido[N,N′-bis-(2,6-diisopropyl-phenyl)imidazol-2-ylidene-κC)] palladium(II), C38H45ClN4OPd
  44. Crystal structure of 2-(4-acetyl-2,6-dimethyl-phenyl)-5,6-dichloro-isoindole-1,3-dione, C18H13Cl2NO3
  45. Crystal structure of 4,4′-bipyridin-1-ium 3,3′,5′-tricarboxy-[1,1′-biphenyl]-2-carboxylate, (C26H18N2O8)
  46. Crystal structure of catena-poly[diaqua-μ2-4,4′-biphenyl-4,4′-diyldipyridine-κ2N:N′-bis(5-carboxy-2,6-dimethylpyridine-3-carboxylato-κO)nickel(II)] dihydrate, C40H40N4O12Ni
  47. Crystal structure of poly-[μ2-4,4′-bipyridine-κ2N:N′−μ3-thiophene-2,3-di-carboxylato-κ4O,O′, O′′:O′′′ -cadmium(II)]
  48. Crystal structure of hexaaquamanganese(II) bis(3-carboxythiophene-2-carboxylate) C12H18MnO14S2
  49. Crystal structure of 4-(3-(pyridin-3-yl)-1H-1,2,4-triazol-5-yl)benzoic acid, C14H10N4O2
  50. Crystal structure of (E)-2-(benzo[d]thiazol-2-yl)-3-(pyridin-3-yl)acrylonitrile)
  51. Crystal structure of catena-poly[2,2′-bipyridinyl-6,6′-dicarboxylato-κ4N,N′,O,O′)-(μ2-2,2′-bipyridinyl-6′-carboxyl-6-carboxylato-κ5N,N′,O,O′:O′′)samarium(III)] monohydrate, C24H13N4O8Sm · H2O
  52. Crystal structure of catena-poly[bis(μ2-4-(3-(pyridin-3-yl)-1H-1,2,4-triazol-5-yl)benzoato)-κ2N:O)copper(II)] dihydrate, C28H22N8O6Cu
  53. Crystal structure of catena-poly[tetraaqua-(μ2-4,4′-bipyridine-k2N:N′)-zinc(II)] fumarate tetrahydrate, C14H26N2O12Zn
  54. Crystal structure of triaqua-(1,10-phenanthroline)-(dihydrogen-3,3′,3′′-(2,4,6-trioxo-1,3,5-triazinane-1,3,5-triyl)tripropanoato) cobalt(II)dihydrogen-3,3′,3′′-(2,4,6-trioxo-1,3,5-triazinane-1,3,5-triyl)tripropanoate, C72H82Co2N16O42
  55. Crystal structure of poly[dibromido-(μ2–4,4′-bis-(pyrid-4-yl)biphenyl-κ2N:N′)lead(II)], C22H16N2PbBr2
  56. Crystal structure of catena-poly[diaqua-bis(μ2-5-carboxy-2-(pyridin-4-yl)benzoato-κ2O:N)-cobalt(II)]dihydrate, C26H24N2O12Co
  57. Crystal structure of 5-(4-pyridyl)pyrimidine–4,4′-bipyridine–1,3,5-benzenetriol–water (1:1:1:1), C25H23N5O4
  58. Crystal structure of 5-hydroxy-4-((4-hydroxyphenyl)imino)naphthalen-1(4H)-one monohydrate, C16H11NO3 · 0.5H2O
  59. Crystal structure of 2-amino-N-(4-methoxyphenyl)benzamide, C14H14N2O2
  60. Crystal structure of (2,5-dihydroxyphenyl)-(4-hydroxy-3,5-dimethoxyphenyl)methanone, C15H14O6
  61. Crystal structure of dichlorido[bis(2-hydroxyethyl)5′-([2,2′:6′,2′′-terpyridin]-4′-yl)-[1,1′:3′,1′′-terphenyl]-4,4′′-dicarboxylato]zinc(II), C39H31Cl2N3O6Zn
  62. Crystal structure of bis[4-(3-carboxy-6-fluoro-1-(4-fluorophenyl)-4-oxo-1,4-dihydroquinolin-7-yl)piperazin-1-ium] benzene-1,4-dicarboxylate (C20H18F2N3O3)2(C8H4O4), C48H40F4N6O10
  63. Crystal structure of (2,5-dihydroxyphenyl)-(4-methoxyphenyl)methanone, C14H12O4
  64. Crystal structure of photochromic 1-(2-methyl-5-phenyl-3-thienyl-2-[2-methyl-5-(4-ethoxylphenyl)-3-thienyl] 3,3,4,4,5,5-hexafluoro-cyclopent-1-ene, C29H22F6OS2
  65. Crystal structure of poly[diaquabis(μ2-biphenyl-2,4′-dicarboxylato-κ2O:O′)tris(μ2-1,1′-biphenyl-4,4′-diylbis(1H-imidazole)-κ2N:N′)dicobalt(II)] monohydrat, C82H64N12O11Co2
  66. Crystal structure of 2-amino-4-(3,4-difluorophenyl)-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile, C16H12N2O2F2
  67. Crystal structure of poly[(di-μ2-aqua-κ2O:O)bis(μ5-oxalato-1:2κ2O1; 1κ1O2; 3:4:5κ3O3; 3κ1O4)(μ4-oxalato-1:2κ2O1; 2:3κ2O2; 3:4κ2O3; 4:1κ2O4)dizinc(II)disodium(I)]
  68. Crystal structure of tetraethylammonium hexachloridotantalate(V), C8H20Cl6NTa
  69. Crystal structure of (E)-2,4-dibromo-6-(((2-nitrophenyl)imino)methyl)phenol, C13H8Br2N2O3
  70. The crystal structure of 6-chloro-2,4-diphenylquinoline
  71. Crystal structure of (E)-2-(((1,10-phenanthrolin-5-yl)imino)methyl)-5-methylphenol monohydrate, C20H15N3O·H2O
  72. Crystal structure of tris(3-(2-pyridyl)pyrazole)zinc(II)tetrachlorido zincate(II), C24H21Cl4N9Zn2
  73. Crystal structure of 4-chloro-N,N-diethyl-6-(piperidin-1-yl)-1,3,5-triazin-2-amine, C12H20ClN5
  74. The crystal structure of 4-allyl-5-benzyl-2,4-dihydro-3H-1,2,4-triazol-3-one, C12H13N3O
  75. Crystal structure of diethyl 2-(((2-(pyridin-3-ylthio)phenyl)amino)methylene)malonate, C19H20N2O4S
  76. Crystal structure of fac-tricarbonyl(2-(isopropylimino)methyl-5-methylphenolatido-κ2N,O)(pyridine-κN)rhenium(I), C19H19N2O4Re
  77. Crystal structure of 1,3,6,8-tetrakis(p-tolylthio)pyrene, C44H34S4
  78. Crystal structure of catena-poly-(diaqua-(μ2-1,2-bis(4-pyridyl)ethene-κ2N:N′)-(4-methylphthalato-κ2O,O′)-cobalt(II)trihydrate, C21H26CoN2O9
  79. Crystal structure of tetraethylammonium fac-tricarbonyl(hexafluoroacetylacetonato-κ2O,O′)-(nitrato-κO)rhenium(I), C16H21O8N2F6Re
  80. Crystal structure of 3-(thiophen-2-yl)-5-(p-tolyl)-4,5-dihydro-1H-pyrazole-1-carboxamide
  81. Crystal structure of bis(1-ethyl-3-methylimidazolium) tetrabromidocadmate(II), [C6H11N2]2[CdBr4]
  82. Crystal structure of N′-(adamantan-2-ylidene)-isonicotinohydrazide, C16H19N3O
  83. Crystal structure of trans-tetraaquabis(4-(pyridin-4-ylsulfonyl)pyridine-κN)cobalt(II) diperchlorate dihydrate, C20H28Cl2CoN4O18S2
  84. Crystal structure of (Z)-4-(furan-2-yl(p-tolylamino)methylene)-3-methyl-1-p-tolyl-1H-pyrazol-5(4H)-one, C23H21N3O2
  85. Crystal structure of 2-[(4-fluorobenzyl)sulfanyl]-4-(2-methylpropyl)-6-oxo-1,6-dihydropyrimidine-5-carbonitrile, C16H16FN3OS
  86. Crystal structure of poly[octaaqua-tris(benzene-1,2,4,5-tetracarboxylato)tetralanthanum(III)] hexahydrate, C30H34La4O38
  87. Crystal structure of trans-tetraaqua-bis(4,4′-sulfonyldipyridine-κN)zinc(II) diperchlorate dihydrate, C20H28Cl2ZnN4O18S2
  88. Crystal structure of 4-nitro-thiophene-2-carboxylic acid, a structure with a Z′ = 4, C5H3NO4S
  89. Crystal structure of dirubidium trimercury(II) tetraselenide, Rb2Hg3Se4
  90. Crystal structure of 5-(adamantan-1-yl)-3-[(4-chloroanilino)methyl]-2,3-dihydro-1,3,4-oxadiazole-2-thione, C19H22ClN3OS
  91. Crystal structure of hexaaquamagnesium(II) 5,5′-bitetrazole-1,1′-diolate, C2H12N8O8Mg
  92. The crystal structure of catena-poly[(μ2-1,1′-benzene-1,4-diylbis(1H-benzimidazole-κ2N:N′)silver(I)] nitrate, C20H14N5AgO3
  93. The crystal structure of 1-(2-(4-chlorophenoxy)-4-chlorophenyl)ethanone, C14H10Cl2O2
  94. The crystal structure of 3,5-dinitro-1,3,5-oxadiazinane, C3H6N4O5
  95. Crystal structure of methyl 5-methoxy 1H-indole-2-carboxylate, C11H11NO3
  96. Crystal structure of (Z)-1-(((3-acetyl-2-hydroxyphenyl)amino)methylene)naphthalen-2(1H)-one, C19H15NO3
  97. Crystal structure of (Z)-5-(4-chlorobenzylidene)-2-thioxothiazolidin-4-one —dimethylsulfoxide (1:1), C12H12ClNO2S3
  98. Crystal structure of 5,5′-((4-(trifluoromethyl)phenyl)methylene)bis(1,3-dimethylpyrimidine-2,4,6(1H,3H,5H)-trione) – diethylamine – dichloromethane (1/1/1) C25H32Cl2F3N5O6
  99. Crystal structure of 2-(dimethylsulfanylidene)-N-(4-methoxyphenyl)-3-oxo-3-phenylpropanamide
  100. Crystal structure of (1,10-phenanthroline-κ2N,N′)bis(thiocyanato-κN)platinum(II), C14H8N4PtS2
  101. Crystal structure of di(μ2-chlorido)bis[2-(2-pyridyl)phenyl-κ2N,C1]dipalladium(II), C22H16Cl2N2Pd2
  102. Crystal structure of trans-dibromidodi(pyridine-κN)palladium(II), PdBr2(C5H5N)2
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