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Crystal structure of di-μ2-aqua-tetraaqua-bis(4-(1H-1,2,4-triazol-1-yl)benzoato-κN)disodium(I) C18H24N6Na2O10

  • Xiaonan Gao EMAIL logo , Cun-Lan Zhang and Ai-Yun Fu
Published/Copyright: August 1, 2018
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Zeitschrift für Kristallographie - New Crystal Structures
From the journal Zeitschrift für Kristallographie - New Crystal Structures Volume 233 Issue 6

Abstract

C18H24N6Na2O10, triclinic, P1̄, a = 6.223(2) Å, b = 7.385(2) Å, c = 14.295(4) Å, α = 75.491(6)°, β = 77.953(6)°, γ = 70.523(6)°, V = 593.9(3) Å3, Z = 1, Rgt(F) = 0.0517, wRref(F2) = 0.1533, T = 296(2) K.

CCDC no.: 1855536

A part of 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, colorless
Size:0.2 × 0.2 × 0.2 mm
Wavelength:Mo Kα radiation (λ = 0.71073 Å)
μ:0.151 mm−1
Diffractometer, scan mode:Bruker APEX-II CCD, Φ and ω-scans
θmax, completeness:28.8°, >99%
N(hkl)measured, N(hkl)unique, Rint:4678, 3075, 0.0253
Criterion for Iobs, N(hkl)gt:Iobs > 2σ(Iobs), 1837
N(param)refined:173
Programs:Bruker programs [1], SHELX [2], [3], [4]
Table 2:

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

AtomxyzUiso*/Ueq
Na10.32484(14)0.71525(15)0.94416(6)0.0573(3)
O10.7263(9)0.822(4)0.1605(3)0.070(3)
O1A0.736(3)0.733(8)0.1628(14)0.045(6)
N10.3680(3)0.7611(2)0.61720(11)0.0380(4)
C10.8401(4)0.7252(4)0.23146(15)0.0465(5)
O21.0516(3)0.6408(2)0.22396(11)0.0521(4)
C20.7111(3)0.7384(3)0.33250(13)0.0377(5)
N20.1350(3)0.8255(3)0.63609(13)0.0523(5)
O3−0.0731(2)0.8101(2)0.97557(10)0.0432(4)
H3A−0.1401180.7950451.0343050.052
H3B−0.1667690.9191380.9549860.052
C30.4739(4)0.7912(4)0.35125(16)0.0608(7)
H30.3892190.8215220.2999840.073
N30.2907(4)0.7324(3)0.77516(13)0.0581(6)
O50.7205(2)0.5765(2)0.92465(11)0.0509(4)
H5A0.8170560.5183820.8820990.061
H5B0.7999860.6378380.9369530.061
C50.4833(3)0.7568(3)0.52000(13)0.0340(4)
O40.3425(3)0.8182(2)1.09180(11)0.0488(4)
H4A0.4456780.8111791.1229650.059
H4B0.2622660.7595021.1354560.059
C40.3594(4)0.7997(4)0.44502(16)0.0552(6)
H40.1995760.8344760.4566180.066
C70.8308(4)0.7001(4)0.40855(15)0.0495(6)
H70.9906100.6651920.3972090.059
C60.7191(4)0.7120(4)0.50228(16)0.0542(6)
H60.8029470.6899080.5529220.065
C80.4557(4)0.7055(4)0.70096(15)0.0543(6)
H80.6118950.6547780.7062540.065
C90.1001(4)0.8050(4)0.73174(16)0.0538(6)
H9−0.0465060.8386910.7667120.065

Source of material

The ligand, 4-(1H-1,2,4-triazol-1-yl)benzoic acid, was purchased from alfa aesar company. Sodium hydrate (0.004 g, 0.1 mmol), Hbpt24 (0.0189 g, 0.1 mmol) and distilled water (20 mL) were placed in a 20.0 mL Teflon-lined stainless steel autoclave. It was heated at 383 K for 2 days. After cooling to room temperature, colourless block crystals of the title complex were obtained.

Experimental details

The carbon H-atoms were placed in calculated positions (C—Hphenyl or triazolyl = 0.93 Å) using a riding model (AFIX 43 or AFIX 137 option of the SHELX program [11], [12], [13], and were included with Uiso(H) = 1.2Ueq(C). The water H-atoms were placed in calculated positions (O⋯H = 0.85 Å), and were included with Uiso(H) = 1.2Ueq(O).

Comment

The exploration of alkali-metal complexes has attracted significant interest, due to its potential application in catalysts [5], [6], [7], [8]. The exo-multidentate compounds are often employed as ligands to produce polymeric networks due to their rich coordination sites and various coordination modes [9], [10], [11], [12]. Recently, our group studied the reactions of 4-(1H-1,2,4-triazol-1-yl)benzoic acid (HL) with silver, obtaining a series of coordination compounds [13], [14]. As a follow up study, we report the title complex.

The title complex consists of two Na(I) ion, two L ligands and six coordinated water molecules. Each Na(I) is five-coordinated by one N atom from L and four O atoms from four water molecules. The Na–N distance is 2.437(2) Å and Na–O bond lengths are in the range of 2.3158(17) − 2.530(2) Å. The coordination environment is a distorted trigonal bipyramid, since the N—Na—O and N—Na—O bond angles in the trigonal plane are in the range of 78.13 − 160.18°. The water O5 atom acts as a μ2-bridge linking the Na(I) centers into a the dinuclear complex. Intermolecular hydrogen bonds link dinuclear complexes into a three-dimensional supramolecular framework.

Acknowledgements

We are grateful for financial support from the NSF of China (Grants 21671031, 21705098); Shandong Provincial Science and Technology Department Project (Grants ZR201702200428); Shandong Provincial Higher Education Research Project(J17KA116)).

References

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Received: 2018-03-17
Accepted: 2018-07-12
Published Online: 2018-08-01
Published in Print: 2018-11-27

©2018 Xiaonan Gao et al., published by De Gruyter, Berlin/Boston

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

Articles in the same Issue

  1. Cover and Frontmatter
  2. Crystal structure of di-μ2-aqua-tetraaqua-bis(4-(1H-1,2,4-triazol-1-yl)benzoato-κN)disodium(I) C18H24N6Na2O10
  3. Crystal structure of diaqua-bis(2-bromo-4-chloro-6-formylphenolato-κ2O,O′)cobalt(II), C16H16Cl2CrN3O7
  4. Crystal structure of catena-poly[(μ2-1-(4-(1H-pyrazol-1-yl)phenyl)ethan-1-one-κ2N:O)-bis(1,1,1-trifluoro-4-oxo-4-(thiophen-2-yl)but-2-en-2-olato-κ2O,O′)copper(II)], C27H18CuF6N2O5S2
  5. Crystal structure of ethyl 2-amino-4-(3,5-difluorophenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carboxylate, C18H15F2NO5
  6. Crystal structure of 5,5′-dimethoxy-2,2′-[1,1′-(ethylenedioxydinitrilo)diethylidyne]diphenol, C20H24N2O6
  7. Crystal structure of (E)-1-(4-(((E)-3,5-dichloro-2-hydroxybenzylidene)amino)phenyl)ethan-1-one O-methyl oxime, C16H14Cl2N2O2
  8. Crystal structure of 2,3,9,10,16,17,23,24-octakis(2,6-dimethylphenoxy)phthalocyanine - trichloromethane (1/2), C98H84Cl6N8O8
  9. Crystal structure of methyl 2-((1-(2-(methoxycarbonyl)benzyl)-1H-1,2,3-triazol-4-yl)methoxy)-1-naphthoate, C24H21N3O5
  10. Crystal structure of catena-poly[(μ2-3,3′-thiodipropionato-κ2O:O′)-(bipyridine-κ2N,N′)copper(II)] C16H16CuN2O4S
  11. Crystal structure of [4-chloro-2-(((2-((3-ethoxy-2-oxidobenzylidene)amino)phenyl)imino)(phenyl)methyl)phenolato-κ4N,N′,O,O′}nickel(II) - ethyl acetate (1/1), C32H29ClN2NiO5
  12. Crystal structure of (4-(4-chlorophenyl)-5-ethyl-1,3-dioxane-5-carboxylato-κ2O,O′)-(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)nickel(II) perchlorate monohydrate, C29H52Cl2N4NiO9
  13. Crystal structure of ethyl 2-amino-4-(3,4-dimethylphenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carboxylate, C20H21NO5
  14. Structure and photochromism of 1,2-bis[2-methyl-5-(3-quinolyl)-3-thienyl]-3,3,4,4,5,5-hexafluorocyclopent-1-ene, C33H20F6N2S2
  15. Crystal structure of catena-poly[diaqua-bis(μ2-3,5-di(1H-1,2,4-triazol-1-yl)benzoate-κ2N:N′)cobalt(II))] 2.5 hydrate, C22H23CoN12O8.50
  16. The crystal structure of dichlorido(1,3-dimesityl-1H-3λ4-imidazol-2-yl)(morpholine-κN)palladium(IV), C25H33Cl2N3OPd
  17. Crystal structure of catena-poly[bis(4,4′-dipyridylaminium-kN)-(μ2-germanowolframato-κ2O:O′)-(2,2′-bipyridine-κ2N,N′)copper(II)] with a Keggin-type heteropolyoxoanion, [Cu(C10H8N2)(C10H10N3)2][GeW12O40] ⋅ H2O
  18. Crystal structure of diaqua-(N-(1-(pyrazin-2-yl)ethylidene)pyridin-1-ium-4-carbohydrazonate-κ3N,N′,O)-tris[nitrato-κ2O,O′)lanthanum(III), C12H15N8O12La
  19. The crystal structure of 2-hydroxy-4-((2-hydroxy-4-methoxy-3,6-dimethylbenzoyl)oxy)-3,6-dimethylbenzoic acid–methanol (1/1), C20H24O8
  20. Crystal structure of guanidinium tetrapropylammonium bis(hydrogencarbonate) dihydrate, C15H40N4O8
  21. Crystal structure of (Z)-2-bromo-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-1-phenylprop-2-en-1-one, C23H27BrO2
  22. Crystal structure of 2-(4-(4H-1,2,4-triazol-4-yl)phenyl)acetic acid, C10H9N3O4
  23. Crystal structure of 4,4′-(1,4-phenylene)bis(1H-imidazol-3-ium)bis(2-carboxybenzoate), C30H26N4O8
  24. Crystal structure of 4,4′-(4,10-diphenyl-4,10-dihydropyreno[4,5-d:9,10-d′]diimidazole-5,11-diyl)bis(N,N-diphenylaniline), C66H44N6
  25. Crystal structure of catena-poly[diaqua-bis(μ2-5-(3-(1H-imidazol-5-yl)phenyl)tetrazol-2-ido-κ2N:N′)cobalt(II)], C20H18CoN12O2
  26. Crystal structure of 1,3-dimethyl-2-(p-tolyl)-1H-perimidin-3-ium iodide 1.5 hydrate, C20H22IN2O1.5
  27. Crystal structure of 2-(4-methoxyphenyl)chromane, C16H16O2
  28. Crystal structure of poly[(μ2-2-carboxy-5-nitroisophthalato-κ2O:O′)-(μ2-4-((1H-imidazol-1-yl)methyl)pyridine-κ2N:N′)zinc(II)], C18H12N4O8Zn
  29. Crystal structure of bis(1-((2-ethyl-4-methyl-1H-imidazol-1-yl)methyl)-1H-benzo[d][1,2,3]triazole-κ2N:N′)tetraiodidodicadmium(II), [Cd2(C13H15N5)2I4]
  30. Crystal structure of tetramethylammonium bis(acetato-κ1O)-tetrakis(μ3-3-((hydroxyimino)methyl)-5-methoxy-2-oxidobenzoate-κ5O,O′:O′,N:O′′)tetrazinc(II) — N,N′-dimethylformamide — water (1/2/2), C62H96Zn4N10O28
  31. Crystal structure of poly[(μ4-5-tert-butylisophthalato-κ4O:O′:O′′:O′′′)-(1,3-dimethyl-2-imidazolidinone-κO)zinc(II)] C17H22N2O5Zn
  32. Crystal structure of [tris(2-benzimidazolylmethyl)amine-κ4N,N′,N′′,N′′′]-[(pyridine-2,6-dicarboxylato-κ2O,N)]cadmium(II)–methanol (1:3) C34H36CdN8O7
  33. The crystal structure of bis(1H-benzo[d]imidazol-2-amine-κN)-diiodidocadmium(II), C14H14CdI2N6
  34. Crystal structure of tetrakis(1H-benzimidazol-2-amine)-κN)-bis(μ2-sulfonato-κ2O:O′)dizinc(II) - methanol (1/1), C30H36N12O10S2Zn2
  35. Crystal structure of 3β-methoxy-20α-dimethylamino-pregn-5-ene, C24H41NO
  36. Crystal structure of dimethyl 4,4′-oxydibenzoate, C16H14O5
  37. Crystal structure of catena-poly[diiodido-(μ2-1,5-dimethyl-2-phenyl-4-((pyridin-3-ylmethylene)amino)-1,2-dihydro-3H-pyrazol-3-one-κ2N:O)zinc(II)], C17H16I2N4OZn
  38. Crystal structure of 4-((E)-((E)-5-(2-fluorobenzylidene)-1-((4-fluorophenyl)sulfonyl)-4-oxopiperidin-3-ylidene)methyl)benzonitrile, C26H18F2N2O3S
  39. Crystal structure of bis(acetato-κ1O)-bis(1-(pyridin-2-yl)ethan-1-one oxime-κ2N,N′)zinc(II), C18H22N4O6Zn
  40. The crystal structure of 9-butoxy-2-(hydroxymethyl)-2H-imidazo[1,5-a]quinolin-10-ium bromide, C17H21O2N2Br
  41. Crystal stucture of 2-(tert-butyl)-6-(hydroxymethyl)-4-methylphenol, C12H18O2
  42. Crystal structure of catena-poly[(2-(5-chloroquinolin-8-yloxy)-1-(pyrrolidin-1-yl)ethan-1-one-κ3N,O,O′)-(dinitrato-κ2O,O′)mercury(II)], C15H15N4O8ClHg
  43. Crystal structure of dimethyl (3aS,6R,6aS,7S)-1H,3H,6H,7H-3a,6:7,9a-diepoxybenzo[de]isochromene-3a1,6a-dicarboxylate, C16H16O7
  44. The crystal structure of 2-(dimethoxymethyl)-4-(4-methylphenyl)-1H-imidazole—petroleum ether-chloroform (3/1), C27H33Cl3N4O4
  45. Crystal structure of 8-(trifluoromethyl)imidazo[1,2-a]pyridine-3-carbaldehyde, C9H5F3N2O
  46. The crystal structure of N,N-diethyl-4,6-bis(naphthalen-2-yloxy)-1,3,5-triazin-2-amine, C27H24N4O2
  47. Crystal structure of 5-bromo-7-chloro-3,3a-dihydrocyclopenta[b]chromen-1(2H)-one, C12H8BrClO2
  48. Crystal structure of 2-(bis(4-fluorophenyl)methylene)hydrazine-1-carbothioamide, C14H11F2N3S
https://doi.org/10.1515/ncrs-2017-0225
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Articles in the same Issue

  1. Cover and Frontmatter
  2. Crystal structure of di-μ2-aqua-tetraaqua-bis(4-(1H-1,2,4-triazol-1-yl)benzoato-κN)disodium(I) C18H24N6Na2O10
  3. Crystal structure of diaqua-bis(2-bromo-4-chloro-6-formylphenolato-κ2O,O′)cobalt(II), C16H16Cl2CrN3O7
  4. Crystal structure of catena-poly[(μ2-1-(4-(1H-pyrazol-1-yl)phenyl)ethan-1-one-κ2N:O)-bis(1,1,1-trifluoro-4-oxo-4-(thiophen-2-yl)but-2-en-2-olato-κ2O,O′)copper(II)], C27H18CuF6N2O5S2
  5. Crystal structure of ethyl 2-amino-4-(3,5-difluorophenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carboxylate, C18H15F2NO5
  6. Crystal structure of 5,5′-dimethoxy-2,2′-[1,1′-(ethylenedioxydinitrilo)diethylidyne]diphenol, C20H24N2O6
  7. Crystal structure of (E)-1-(4-(((E)-3,5-dichloro-2-hydroxybenzylidene)amino)phenyl)ethan-1-one O-methyl oxime, C16H14Cl2N2O2
  8. Crystal structure of 2,3,9,10,16,17,23,24-octakis(2,6-dimethylphenoxy)phthalocyanine - trichloromethane (1/2), C98H84Cl6N8O8
  9. Crystal structure of methyl 2-((1-(2-(methoxycarbonyl)benzyl)-1H-1,2,3-triazol-4-yl)methoxy)-1-naphthoate, C24H21N3O5
  10. Crystal structure of catena-poly[(μ2-3,3′-thiodipropionato-κ2O:O′)-(bipyridine-κ2N,N′)copper(II)] C16H16CuN2O4S
  11. Crystal structure of [4-chloro-2-(((2-((3-ethoxy-2-oxidobenzylidene)amino)phenyl)imino)(phenyl)methyl)phenolato-κ4N,N′,O,O′}nickel(II) - ethyl acetate (1/1), C32H29ClN2NiO5
  12. Crystal structure of (4-(4-chlorophenyl)-5-ethyl-1,3-dioxane-5-carboxylato-κ2O,O′)-(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)nickel(II) perchlorate monohydrate, C29H52Cl2N4NiO9
  13. Crystal structure of ethyl 2-amino-4-(3,4-dimethylphenyl)-7-methyl-5-oxo-4H,5H-pyrano[4,3-b]pyran-3-carboxylate, C20H21NO5
  14. Structure and photochromism of 1,2-bis[2-methyl-5-(3-quinolyl)-3-thienyl]-3,3,4,4,5,5-hexafluorocyclopent-1-ene, C33H20F6N2S2
  15. Crystal structure of catena-poly[diaqua-bis(μ2-3,5-di(1H-1,2,4-triazol-1-yl)benzoate-κ2N:N′)cobalt(II))] 2.5 hydrate, C22H23CoN12O8.50
  16. The crystal structure of dichlorido(1,3-dimesityl-1H-3λ4-imidazol-2-yl)(morpholine-κN)palladium(IV), C25H33Cl2N3OPd
  17. Crystal structure of catena-poly[bis(4,4′-dipyridylaminium-kN)-(μ2-germanowolframato-κ2O:O′)-(2,2′-bipyridine-κ2N,N′)copper(II)] with a Keggin-type heteropolyoxoanion, [Cu(C10H8N2)(C10H10N3)2][GeW12O40] ⋅ H2O
  18. Crystal structure of diaqua-(N-(1-(pyrazin-2-yl)ethylidene)pyridin-1-ium-4-carbohydrazonate-κ3N,N′,O)-tris[nitrato-κ2O,O′)lanthanum(III), C12H15N8O12La
  19. The crystal structure of 2-hydroxy-4-((2-hydroxy-4-methoxy-3,6-dimethylbenzoyl)oxy)-3,6-dimethylbenzoic acid–methanol (1/1), C20H24O8
  20. Crystal structure of guanidinium tetrapropylammonium bis(hydrogencarbonate) dihydrate, C15H40N4O8
  21. Crystal structure of (Z)-2-bromo-3-(3,5-di-tert-butyl-4-hydroxyphenyl)-1-phenylprop-2-en-1-one, C23H27BrO2
  22. Crystal structure of 2-(4-(4H-1,2,4-triazol-4-yl)phenyl)acetic acid, C10H9N3O4
  23. Crystal structure of 4,4′-(1,4-phenylene)bis(1H-imidazol-3-ium)bis(2-carboxybenzoate), C30H26N4O8
  24. Crystal structure of 4,4′-(4,10-diphenyl-4,10-dihydropyreno[4,5-d:9,10-d′]diimidazole-5,11-diyl)bis(N,N-diphenylaniline), C66H44N6
  25. Crystal structure of catena-poly[diaqua-bis(μ2-5-(3-(1H-imidazol-5-yl)phenyl)tetrazol-2-ido-κ2N:N′)cobalt(II)], C20H18CoN12O2
  26. Crystal structure of 1,3-dimethyl-2-(p-tolyl)-1H-perimidin-3-ium iodide 1.5 hydrate, C20H22IN2O1.5
  27. Crystal structure of 2-(4-methoxyphenyl)chromane, C16H16O2
  28. Crystal structure of poly[(μ2-2-carboxy-5-nitroisophthalato-κ2O:O′)-(μ2-4-((1H-imidazol-1-yl)methyl)pyridine-κ2N:N′)zinc(II)], C18H12N4O8Zn
  29. Crystal structure of bis(1-((2-ethyl-4-methyl-1H-imidazol-1-yl)methyl)-1H-benzo[d][1,2,3]triazole-κ2N:N′)tetraiodidodicadmium(II), [Cd2(C13H15N5)2I4]
  30. Crystal structure of tetramethylammonium bis(acetato-κ1O)-tetrakis(μ3-3-((hydroxyimino)methyl)-5-methoxy-2-oxidobenzoate-κ5O,O′:O′,N:O′′)tetrazinc(II) — N,N′-dimethylformamide — water (1/2/2), C62H96Zn4N10O28
  31. Crystal structure of poly[(μ4-5-tert-butylisophthalato-κ4O:O′:O′′:O′′′)-(1,3-dimethyl-2-imidazolidinone-κO)zinc(II)] C17H22N2O5Zn
  32. Crystal structure of [tris(2-benzimidazolylmethyl)amine-κ4N,N′,N′′,N′′′]-[(pyridine-2,6-dicarboxylato-κ2O,N)]cadmium(II)–methanol (1:3) C34H36CdN8O7
  33. The crystal structure of bis(1H-benzo[d]imidazol-2-amine-κN)-diiodidocadmium(II), C14H14CdI2N6
  34. Crystal structure of tetrakis(1H-benzimidazol-2-amine)-κN)-bis(μ2-sulfonato-κ2O:O′)dizinc(II) - methanol (1/1), C30H36N12O10S2Zn2
  35. Crystal structure of 3β-methoxy-20α-dimethylamino-pregn-5-ene, C24H41NO
  36. Crystal structure of dimethyl 4,4′-oxydibenzoate, C16H14O5
  37. Crystal structure of catena-poly[diiodido-(μ2-1,5-dimethyl-2-phenyl-4-((pyridin-3-ylmethylene)amino)-1,2-dihydro-3H-pyrazol-3-one-κ2N:O)zinc(II)], C17H16I2N4OZn
  38. Crystal structure of 4-((E)-((E)-5-(2-fluorobenzylidene)-1-((4-fluorophenyl)sulfonyl)-4-oxopiperidin-3-ylidene)methyl)benzonitrile, C26H18F2N2O3S
  39. Crystal structure of bis(acetato-κ1O)-bis(1-(pyridin-2-yl)ethan-1-one oxime-κ2N,N′)zinc(II), C18H22N4O6Zn
  40. The crystal structure of 9-butoxy-2-(hydroxymethyl)-2H-imidazo[1,5-a]quinolin-10-ium bromide, C17H21O2N2Br
  41. Crystal stucture of 2-(tert-butyl)-6-(hydroxymethyl)-4-methylphenol, C12H18O2
  42. Crystal structure of catena-poly[(2-(5-chloroquinolin-8-yloxy)-1-(pyrrolidin-1-yl)ethan-1-one-κ3N,O,O′)-(dinitrato-κ2O,O′)mercury(II)], C15H15N4O8ClHg
  43. Crystal structure of dimethyl (3aS,6R,6aS,7S)-1H,3H,6H,7H-3a,6:7,9a-diepoxybenzo[de]isochromene-3a1,6a-dicarboxylate, C16H16O7
  44. The crystal structure of 2-(dimethoxymethyl)-4-(4-methylphenyl)-1H-imidazole—petroleum ether-chloroform (3/1), C27H33Cl3N4O4
  45. Crystal structure of 8-(trifluoromethyl)imidazo[1,2-a]pyridine-3-carbaldehyde, C9H5F3N2O
  46. The crystal structure of N,N-diethyl-4,6-bis(naphthalen-2-yloxy)-1,3,5-triazin-2-amine, C27H24N4O2
  47. Crystal structure of 5-bromo-7-chloro-3,3a-dihydrocyclopenta[b]chromen-1(2H)-one, C12H8BrClO2
  48. Crystal structure of 2-(bis(4-fluorophenyl)methylene)hydrazine-1-carbothioamide, C14H11F2N3S
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