Home Synthesis and crystal structure of bis(μ2-acetato-κ2O:O′)–bis(μ2–(8-(2-oxidophenyl)-3,6-dioxa-2,7-diazaocta-1,7-dien-1-yl)naphthalen-2-olato-κ6O:O,N,N′,O′:O′)tricobalt(II), C44H38Co3N4O12
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Synthesis and crystal structure of bis(μ2-acetato-κ2O:O′)–bis(μ2–(8-(2-oxidophenyl)-3,6-dioxa-2,7-diazaocta-1,7-dien-1-yl)naphthalen-2-olato-κ6O:O,N,N′,O′:O′)tricobalt(II), C44H38Co3N4O12

  • Zong-Li Ren , Hao-Ran Mu , Xiao-Xin An , Yun-Dong Peng and Wen-Kui Dong EMAIL logo
Published/Copyright: October 20, 2018
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Zeitschrift für Kristallographie - New Crystal Structures
From the journal Zeitschrift für Kristallographie - New Crystal Structures Volume 234 Issue 1

Abstract

C44H38Co3N4O12, monoclinic, C12/c1 (no. 15), a = 16.1982(8) Å, b = 14.1334(7) Å, c = 18.7433(11) Å, β = 107.916(6)°, V = 4082.9(4) Å3, Z = 4, Rgt(F) = 0.0639, wRref(F2) = 0.1538, T = 173.00(10) K.

CCDC no.: 1854444

The crystal structure is shown in the figure. Tables 1 and 2 contain details on crystal structure and measurement conditions and a list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal:Block, clear dark brown
Size:0.15 × 0.14 × 0.12 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:1.28 mm−1
Diffractometer, scan mode:SuperNova, ω-scans
θmax, completeness:26°, >99%
N(hkl)measured, N(hkl)unique, Rint:8736, 4011, 0.059
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 2647
N(param)refined:286
Programs:CrysAlisPRO [1], OLEX2 [2], SHELX [3]
Table 2:

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

AtomxyzUiso*/Ueq
Co10.80705(4)0.54422(5)0.72795(4)0.0333(2)
Co21.00000.55716(7)0.75000.0285(3)
O10.8915(2)0.6495(2)0.71277(19)0.0320(8)
O20.6248(2)0.5924(3)0.6443(2)0.0449(10)
O30.6503(3)0.4233(3)0.7370(3)0.0596(13)
O40.8958(2)0.4615(2)0.7107(2)0.0342(8)
O50.8416(2)0.5734(3)0.8367(2)0.0444(10)
O60.9841(2)0.5629(2)0.85507(19)0.0350(9)
N10.7113(3)0.6306(3)0.6691(2)0.0363(11)
N20.7294(3)0.4239(4)0.7188(3)0.0449(12)
C10.8771(3)0.7209(3)0.6664(3)0.0298(12)
C1AA0.9201(4)0.5826(4)0.8764(3)0.0363(13)
C20.9495(3)0.7706(3)0.6558(3)0.0333(12)
H21.00530.75060.68190.040*
C30.9396(4)0.8460(4)0.6089(3)0.0378(13)
H30.98860.87660.60430.045*
C40.8557(4)0.8790(4)0.5668(3)0.0370(13)
C50.8475(5)0.9566(4)0.5187(3)0.0560(17)
H50.89710.98590.51410.067*
C60.7668(5)0.9900(5)0.4779(4)0.0592(18)
H60.76151.04170.44620.071*
C70.6925(5)0.9446(5)0.4852(4)0.0643(19)
H70.63770.96530.45690.077*
C80.7001(4)0.8702(4)0.5336(3)0.0515(16)
H80.65000.84290.53870.062*
C90.7816(3)0.8331(4)0.5762(3)0.0345(13)
C100.7917(3)0.7525(3)0.6257(3)0.0314(12)
C110.7168(3)0.7023(4)0.6276(3)0.0347(13)
H110.66450.72370.59480.042*
C120.5900(4)0.5809(5)0.7051(4)0.0530(17)
H12A0.53020.56050.68470.064*
H12B0.58960.64230.72810.064*
C130.6361(4)0.5127(5)0.7654(4)0.0542(17)
H13A0.69160.53950.79380.065*
H13B0.60220.50400.79940.065*
C140.7415(4)0.3444(4)0.6930(4)0.0508(17)
H140.69970.29810.68970.061*
C150.8152(4)0.3192(4)0.6681(3)0.0436(15)
C160.8105(4)0.2319(4)0.6312(4)0.0604(19)
H160.76220.19350.62530.073*
C170.8756(5)0.2020(5)0.6038(4)0.064(2)
H170.87050.14510.57780.077*
C180.9478(5)0.2568(4)0.6150(3)0.0531(17)
H180.99270.23570.59780.064*
C190.9558(4)0.3436(4)0.6518(3)0.0406(14)
H191.00590.37950.65930.049*
C200.8883(3)0.3770(3)0.6775(3)0.0324(12)
C350.9373(4)0.6194(5)0.9549(3)0.0596(18)
H35A0.94700.68640.95560.089*
H35B0.98780.58880.98760.089*
H35C0.88820.60640.97180.089*

Source of material

Source of the ligand H2L 2,2′-[ethylenediyldioxybis(nitrilomethylidyne)]phenol-naphtol (H2L) was synthesized in accordance with the earlier reported method [4]. Alicylaldehyde (122.1 mg, 1 mmol) in ethanol solution (50 mL) was slowly added to a solution of 1,2-bis(aminooxy)ethane (184.2 mg, 2 mmol) in ethanol (80 mL) over 2.5 h. The solution was heated at 323–328 K for 5 h. The solution was concentrated by reduced pressure distillation. The mixture was subjected to column chromatography with trichloromethane:ethyl acetate = 20:1 gave 175.8 mg yellow oily liquid 2-[O-(1-ethyloxyamide)]oxime-phenol. Yield: 89.6%. 1H NMR (400 MHz, CDCl3) δ 3.97 (t, J = 4.6 Hz, 2H), 4.36 (t, J = 4.6 Hz, 2H), 5.52 (brs, 2H), 6.90 (t, J = 7.7 Hz, 1H), 6.97 (d, J = 7.7 Hz, 1H), 7.15 (dd, J = 7.7, 1.4 Hz, 1H), 7.29 (t, J = 7.7 Hz, 1H), 8.21 (s, 1H), 9.81 (s, 1H). Elemental analysis Anal. Calcd. for C9H12N2O3: C, 55.09%; H, 6.16%; N, 14.28%. Found: C, 55.28%; H, 6.12%; N, 14.01%. A solution of 2-hydroxy-1-naphthaldehyde (172.2 mg, 1.00 mmol) in ethanol (20 mL) was slowly added to 2-[O-(1-ethyloxyamide)]oxime-phenol (196.2 mg, 1.00 mmol) in ethanol solution (10 mL) over 2 h, and stirred for about 6 h. Then the aw product was distilled under reduced pressure, filtered, washed by ethanol/hexane (1:4). The product was dried under vacuo and obtained 247.4 mg of a white solid of 2-hydroxy-1-naphthaldehyde O-(2-(((2-hydroxybenzylidene)amino)oxy)ethyl) oxime (H2L). Yield 70.6%, m.p. 402–403 K. Elemental analysis – Anal. Calcd. for C20H18N2O4: C, 68.56%; H, 5.18%; N, 8.00%. Found: C, 68.61%; H, 5.17%; N, 7.97%.

Source of the trinuclear Co(II) title complex: An ethanol solution (3.0 mL) of cobalt(II) acetate tetrahydrate (2.49 mg, 0.010 mmol) was added to a acetonitrile solution (2.0 mL) of H2L (3.50 mg, 0.010 mmol) at room temperature, the color of the mixing solution turned light green immediately. After the mixture was stirred for 1 h and then the mixture was filtered. The resulting filtrate was left undisturbed for about one week to form clear dark brown block crystals. Yield: 76.9%. Elemental analysis Anal. Calcd. for C44H38Co3N4O12: C, 53.30%; H, 3.86%; N, 5.65%. Found: C, 53.36%; H, 3.85%; N, 5.63%.

Experimental details

Hydrogen atoms were placed in their geometrically idealized positions and constrained to ride on their parent atoms.

Discussion

Salen (N,N′-bis(salicylaldehydo)ethylenediamine) or its derivatives are very important and versatile ligand, and their transition metal complexes have been one of the highlights in coordination chemistry in the last decades [5], [6], [7], [8], which could be applied in biological fields [9], luminescent [10], [11] and magnetic [12], [13], [14] materials, fluorescence probes [15], [16] and as sensors [17], [18]. When an O-alkyl oxime moiety (—CH=N—O—(CH2)n—O—N=CH—) instead of the imine moiety is used, the larger electronegativity of the oxygen atoms is expected to affect the electronic properties of the Salamo-type ligand or its derivatives, which leads to more stable complexes.

Because of the space group symmetry in the trinuclear structure of the Co(II) complex, the two terminal Co(II) atoms (Co1 and Co1′) were both located in the cis—N2O2 coordination. The coordination is defined by the completely deprotonated L2− ligand, and carboxylate oxygen (O5) from the acetato bridging ligand (cf. the figure). Co1 and Co1′ adopt the same coordination environment, so they have the identical tetragonal pyramid geometries. Then, the coordination sphere of the central Co(II) (Co2) atom is completed by quadruple 2-phenoxo oxygen (O1, O1′, O4 and O4′) atoms from two L2− moieties and two acetato oxygen (O6 and O6′) atoms. All of the six oxygen atoms coordinate to Co2 constituting an octahedral geometry (cf. the figure).

References

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Received: 2018-07-12
Accepted: 2018-10-09
Published Online: 2018-10-20
Published in Print: 2018-12-19

©2018 Zong-Li Ren et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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  44. Crystal structure of aqua-bis(1,5-dimethyl-2-phenyl-4-(((E)-4-pyridylmethylene)amino)pyrazolidin-3-one-κN)-(nitrato-κO)-(nitrato-κ2O,O′)zinc(II), C34H34N10O9Zn
  45. Crystal structure of catena-poly[dichlorido-(μ2-1,5-dimethyl-2-phenyl-4-((pyridin-4-ylmethylene)amino)-1,2-dihydro-3H-pyrazol-3-one-κ2N:O)cobalt(II)] – methanol (1/1), C18H20Cl2CoN4O2
  46. Crystal structure of poly[diaqua-bis(μ2-1-(4-(1H-imidazol-1-yl)benzyl)-1H-1,2,4-triazole-κ2N:N′)manganese(II)]bis(2-carboxybenzoate) dihydrate, MnC40H40N10O12
  47. The crystal structure of 4-((3,4-dichlorobenzylidene)amino)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one, C18H15Cl2N3O
  48. Crystal structure of bis(2-methoxy-6-((2-(pyrimidin-2-yl)hydrazono)methyl)phenolato-κ3N,N′,O)iron(III) perchlorate, C24H22N8O8ClFe
  49. The crystal structure of 2-[4-hydroxy-3-methoxyphenyl]-4,4,5,5-tetramethylimidazoline-3-oxide-1-oxyl, C14H19N2O4
  50. Crystal structure of diaqua-bis(3,3-dimethylacrylato-κ2O,O′)zinc(II), C10H18ZnO6
  51. Crystal structure of dichloro-tetrakis[(E)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pent-1-en-3-ol-κN]cadmium (II), C60H74CdCl6N12O4
  52. Crystal structure of (20R)-20,25-epoxy-dammaran-3,12-dione, C30H48O3
  53. Crystal structure of (E)-3′,6′-bis(ethylamino)-2′,7′-dimethyl-2-((pyridin-2-ylmethylene)amino)spiro[isoindoline-1,9′-xanthen]-3-one, C32H31N5O2
  54. The crystal structure of 2-(4-fluorophenyl)-1,3,4-oxadiazole, C8H5FN2O
  55. Crystal structure of (2,2′-bipyridine-κ2N,N′)bis(tri(p-tolyl)phosphine-κP)copper(I) tetrafluoroborate – 4,4′-bipyridine (2/1), C57H54BCuF4N3P2
  56. The crystal structure of 2,6-dimethyl-3,5-dinitrocyclohexa-2,5-diene-1,4-dione, C8H6N2O6
  57. The crystal structure of 2,3-dimethyl-1,4-dinitrobenzene – a Z′ = 4 structure, C8H8N2O4
  58. Crystal structure of [(1,2-η)-1,2,3,4,5-pentamethyl-cyclopenta-2,4-dien-1-yl] (1,4,10,13-tetraoxa-7,16-diazacyclooctadecane-κ6N2,O4) rubidium (I), [Rb(diaza-18-crown-6)]Cp*, C22H41N2O4Rb
  59. Crystal structure of 2-(4-fluorophenyl)-N-phenyl-2-(phenylamino)ethanesulfonamide – toluene (1/0.5), C23.5H23FN2O2S
  60. Crystal structure of pyrene-4-aldehyde, C17H10O
  61. Crystal structure of 2-(furan-2-yl)-5-methyl-1,3-dioxane-5-carboxylic acid, C10H12O5
  62. Crystal structure of 2-(4-chlorophenyl)-3-phenyl-1,8-naphthyridine, C20H13N2Cl
  63. Crystal structure and photochromism of 1-(2-ethyl-5-formylthiophen-3yl)-2-(2-cyano-1,5-dimethyl-4-pyrrl)-3,3,4,4,5,5-hexafluorocyclopent-1-ene, C19H14F6N2OS
  64. Crystal structure of 2-(4-bromophenyl)-1,3-dimethyl-1H-perimidin-3-ium iodide, C19H16BrIN2
  65. Crystal structure of 2-(4-(dimethylamino)phenyl)-10-methylacridin-9(10H)-one, C22H20N2O
  66. Crystal structure of 4-(acetoxymethyl)-6-(3-acetyl-3-(4-fluorophenyl)thioureido)cyclohex-4-ene-1,2,3-triyl triacetate, C24H26FN2O9S
https://doi.org/10.1515/ncrs-2017-0394
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Articles in the same Issue

  1. Cover and Frontmatter
  2. Crystal structure of bis(6,6′-((ethane-1,2-diylbis(azanylylidene))bis(methanylylidene))bis(2,4-diiodophenolato)-κ4N,N′,O,O′)cer(IV), C32H20CeI8N4O4
  3. Crystal structure of (6,6′-((ethane-1,2-diylbis(azanylylidene))bis(methanylylidene))bis(2-chlorophenolato-κ2N,O))copper(II), C16H12Cl2CuN2O2
  4. Crystal structure of poly[aqua-(μ3-4-(pyridin-4-yl)isophthalato-κ4O,O′:O′′:O′′′)-(μ2-5-carboxy-2-(pyridin-4-yl)benzoato-κ2O:O′)samarium(III)], C26H18N2O9Sm
  5. Crystal structure of 1-{4-[(2-hydroxy-5-nitrobenzylidene)amino]phenyl}ethanone O-methyl oxime, C16H15N3O4
  6. Synthesis and crystal structure of bis(μ2-acetato-κ2O:O′)-bis(μ2-1-(8-(2-oxidophenyl)-3,6-dioxa-2,7-diazaocta-1,7-dien-1-yl)naphthalen-2-olato-κ6O:O,N,N′,O′:O′)trizinc(II), C44H38Zn3N4O12
  7. Synthesis and crystal structure of bis(μ2-acetato-κ2O:O′)–bis(μ2–(8-(2-oxidophenyl)-3,6-dioxa-2,7-diazaocta-1,7-dien-1-yl)naphthalen-2-olato-κ6O:O,N,N′,O′:O′)tricobalt(II), C44H38Co3N4O12
  8. Crystal structure of poly[aqua(μ4-2,2′,2′′-nitrilotriacetato-κ6O1,O3,O5:O2:O4:O6)-yttrium(III)], C6H8NO7Y
  9. Crystal structure of catena-poly[bromido-(μ2-pyrazine-2-carboxylato-κ3N:N′,O)copper(II)], C10H6N4Cu2O4Br
  10. Crystal structure of poly[dodekais(μ2-2,6-difluorobenzoato-κ2O:O′)-bis((μ3-hexamethylenetetramine-κ3N:N′:N′′)hexacopper(II)], C48H30N4O12F12Cu3
  11. Crystal structure of methyl 4-(4-hydroxy-3-nitrophenyl)-2-methyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C18H18N2O6
  12. Crystal structure of N-phenyl-2-(propan-2-ylidene)hydrazine-1-carbothioamide, C10H13N3S
  13. Crystal structure of sodium caesium zinc phosphate, NaCsZnP2O7
  14. Crystal structure of methyl 4-(4-isopropylphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydro-quinoline-3-carboxylate, C23H29NO3
  15. Crystal structure of catena-poly[bis(μ2-1,3-di(4H-1,2,4-triazol-4-yl)benzene-κ2N:N′)-bis(thiocyanato-κ1N)cobalt(II), C22H16CoN14S2
  16. Crystal structure of catena-poly[(μ2-2,5-di(pyridin-3-yl)-1,3,4-thiadiazole-κ2N:N′)-bis(2,5-di(pyridin-3-yl)-1,3,4-thiadiazole-κ1N)-bis(thiocyanato-κ1N)cobalt(II)], C38H24CoN14S5
  17. Crystal structure of bis(2,5-di(pyridin-2-yl)-1,3,4-thiadiazole-κ2N,N′)-bis(thiocyanato-κ1N)cobalt(II), C26H16CoN10S4
  18. Crystal structure of (bis((1H-benzo[d]imidazol2-yl)methyl)amine-κ3N,N′,N′′)-(pyridine-2,6-dicarboxylato-κ3N,O,O′)zinc(II) — methanol — water (1/2/1), C25H28N6O7Zn
  19. Crystal structure of catena-poly[triaqua-(μ2-5-methoxy-isophthalato-κ2O:O′)copper(II)], C9H12CuO8
  20. Structure and photochromism of 1-[2-methyl-5-phenyl-3-thienyl]-2-[2-methyl-5-(4-chlorophenyl)-3-thienyl]3,3,4,4,5,5-hexafluorocyclopent-1-ene, C27H16ClF6S2
  21. Crystal structure of methyl 4-(3-phenoxyphenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C26H27NO4
  22. Crystal structure of poly[diaqua-di-μ2-hydroxido-(μ4-3,4,5,6-tetrafluoro-1,2-phthalato-κ4O:O′:O′′:O′′′)-(μ4-3,4,5,6-tetrafluoro-1,2-phthalato-κ5O,O:O′:O′′:O′′′)disamarium(III)] – bipyridine (2/1), C21H11NF16O12Sm2
  23. Crystal structural of diethyl 4-(3,5-dibromo-4-hydroxyphenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate, C19H21Br2NO5
  24. Crystal structure of catena-poly[tetraaqua(μ2-4-(1H-imidazol-1-yl)pyridine-κ2N:N′))zinc(II)] thiophene-2,5-dicarboxylate, C14H17N3O8ZnS
  25. Crystal structure of (20S)-20-(dimethylamino)-3-(tigloylamino)-5α-pregn-2,16-dien-4-one, C28H42N2O2
  26. Crystal structure of rac-trans-N,N′-bis(3,5-diiodosalicylidene)-1,2-cyclohexanediamine, C20H18I4N2O2
  27. Crystal structure of 2-bromo-7-(4-(dimethylamino)phenyl)-10-methylacridin-9 (10H)-one, C22H19BrN2O
  28. Crystal structure of catena-poly[(μ2-pentane-1,5-dicarboxylato-κ2O:O′)-(μ2-2-[(1H-imidazol-1-yl)methyl]-6-methyl-1H-benzimidazole-κ2N:N′)zinc(II)] sesquihydrate, C17H21N4O5.5Zn
  29. Crystal structure of ethyl 2-amino-4-(3,4-difluorophenyl)-5-oxo-4H,5H-pyrano[3,2-c] chromene-3-carboxylate, C21H15F2NO5
  30. Crystal structure of 9-(5-methylthiophen-2-yl)-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione, C18H18O3S
  31. Crystal structure of [5,5′-((propane-1,3-diylbis(azanylylidene))bis(ethan-1-yl-2-ylidene))bis(3-(ethoxycarbonyl)-2,4-dimethylpyrrol-1-ido)-κ4N,N′,N′′,N′′′]nickel(II), C23H30N4O4Ni
  32. Crystal structure of (Z)-2-(2-(1,3-dioxo-1-(phenylamino)butan-2-ylidene)hydrazineyl) terephthalic acid-dimethylsulfoxide (1/1), C18H15N3O6 ⋅ C2H6OS
  33. Crystal structure of (2E,4Z)-dimethyl 4-((phenylamino)methylene)pent-2-enedioate, C14H15N1O4
  34. Crystal structure of (2Z,2′Z)-1,1′-(pyridine-2,6-diyl) bis(3-hydroxy-3-phenylprop-2-en-1-one), C23H17NO4
  35. Crystal structure of ethyl 2-amino-4-(3-bromophenyl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxylate, C21H16BrNO5
  36. Crystal structure of bis(μ2-3,5-dichloro-2-oxidobenzoato-κ4O,O′:O′,O′′)-hexakis(μ2-pivalato-κ2O:O′)-bis(pivalato-κ2O,O′)-tetrakis(1,10-phenanthroline-κ2N,N′)tetragadolinium(III), C102H108Cl4Gd4N8O22
  37. Crystal structure of catena-poly[aqua-bis(formato-κ1O)-(μ2-1,1′-(oxybis(1,4-phenylene))-bis(1H-1,2,4-triazole)-κ2N:N′)copper(II)]hydrate, C18H16CuN6O6
  38. Crystal structure of 5-bromo-2-(naphthalen-6-yl)pyridine, C15H10BrN
  39. Crystal structure of N-(4-methoxybenzyl)pyridazin-3-amine- a rare Z′ = 4 structure, C12H13N3O
  40. Crystal structure of bis(perchlorato-κ1O)-bis(3,4,5-trimethoxy-N-(pyridin-2-yl)benzamide-κ2N,O)copper(II), C32H30Cl2CuN4O16
  41. Crystal structure of methyl 4-methyl-2,5-di(pyridin-4-yl)-1H-pyrrole-3-carboxylate monohydrate C17H15N3O2⋅H2O
  42. Crystal structure of dimethyl 5-(10-(methoxycarbonyl)anthracen-9-yl) isophthalate,C26H20O6
  43. Crystal structure of tert-butyl (R)-(1-(benzylamino)-3-methoxy-1-oxopropan-2-yl)carbamate, C16H24N2O4
  44. Crystal structure of aqua-bis(1,5-dimethyl-2-phenyl-4-(((E)-4-pyridylmethylene)amino)pyrazolidin-3-one-κN)-(nitrato-κO)-(nitrato-κ2O,O′)zinc(II), C34H34N10O9Zn
  45. Crystal structure of catena-poly[dichlorido-(μ2-1,5-dimethyl-2-phenyl-4-((pyridin-4-ylmethylene)amino)-1,2-dihydro-3H-pyrazol-3-one-κ2N:O)cobalt(II)] – methanol (1/1), C18H20Cl2CoN4O2
  46. Crystal structure of poly[diaqua-bis(μ2-1-(4-(1H-imidazol-1-yl)benzyl)-1H-1,2,4-triazole-κ2N:N′)manganese(II)]bis(2-carboxybenzoate) dihydrate, MnC40H40N10O12
  47. The crystal structure of 4-((3,4-dichlorobenzylidene)amino)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one, C18H15Cl2N3O
  48. Crystal structure of bis(2-methoxy-6-((2-(pyrimidin-2-yl)hydrazono)methyl)phenolato-κ3N,N′,O)iron(III) perchlorate, C24H22N8O8ClFe
  49. The crystal structure of 2-[4-hydroxy-3-methoxyphenyl]-4,4,5,5-tetramethylimidazoline-3-oxide-1-oxyl, C14H19N2O4
  50. Crystal structure of diaqua-bis(3,3-dimethylacrylato-κ2O,O′)zinc(II), C10H18ZnO6
  51. Crystal structure of dichloro-tetrakis[(E)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pent-1-en-3-ol-κN]cadmium (II), C60H74CdCl6N12O4
  52. Crystal structure of (20R)-20,25-epoxy-dammaran-3,12-dione, C30H48O3
  53. Crystal structure of (E)-3′,6′-bis(ethylamino)-2′,7′-dimethyl-2-((pyridin-2-ylmethylene)amino)spiro[isoindoline-1,9′-xanthen]-3-one, C32H31N5O2
  54. The crystal structure of 2-(4-fluorophenyl)-1,3,4-oxadiazole, C8H5FN2O
  55. Crystal structure of (2,2′-bipyridine-κ2N,N′)bis(tri(p-tolyl)phosphine-κP)copper(I) tetrafluoroborate – 4,4′-bipyridine (2/1), C57H54BCuF4N3P2
  56. The crystal structure of 2,6-dimethyl-3,5-dinitrocyclohexa-2,5-diene-1,4-dione, C8H6N2O6
  57. The crystal structure of 2,3-dimethyl-1,4-dinitrobenzene – a Z′ = 4 structure, C8H8N2O4
  58. Crystal structure of [(1,2-η)-1,2,3,4,5-pentamethyl-cyclopenta-2,4-dien-1-yl] (1,4,10,13-tetraoxa-7,16-diazacyclooctadecane-κ6N2,O4) rubidium (I), [Rb(diaza-18-crown-6)]Cp*, C22H41N2O4Rb
  59. Crystal structure of 2-(4-fluorophenyl)-N-phenyl-2-(phenylamino)ethanesulfonamide – toluene (1/0.5), C23.5H23FN2O2S
  60. Crystal structure of pyrene-4-aldehyde, C17H10O
  61. Crystal structure of 2-(furan-2-yl)-5-methyl-1,3-dioxane-5-carboxylic acid, C10H12O5
  62. Crystal structure of 2-(4-chlorophenyl)-3-phenyl-1,8-naphthyridine, C20H13N2Cl
  63. Crystal structure and photochromism of 1-(2-ethyl-5-formylthiophen-3yl)-2-(2-cyano-1,5-dimethyl-4-pyrrl)-3,3,4,4,5,5-hexafluorocyclopent-1-ene, C19H14F6N2OS
  64. Crystal structure of 2-(4-bromophenyl)-1,3-dimethyl-1H-perimidin-3-ium iodide, C19H16BrIN2
  65. Crystal structure of 2-(4-(dimethylamino)phenyl)-10-methylacridin-9(10H)-one, C22H20N2O
  66. Crystal structure of 4-(acetoxymethyl)-6-(3-acetyl-3-(4-fluorophenyl)thioureido)cyclohex-4-ene-1,2,3-triyl triacetate, C24H26FN2O9S
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