Home The crystal structure of [(8-carboxymethoxy-quinoline-2-carboxylate-κ4N,O,O,O)-2,2′-bipyridine-κ2N-copper(II)] tetrahydrate, C22H23N3O9Cu
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The crystal structure of [(8-carboxymethoxy-quinoline-2-carboxylate-κ4N,O,O,O)-2,2′-bipyridine-κ2N-copper(II)] tetrahydrate, C22H23N3O9Cu

  • Zhao Zeng-Bing , Yang Shu-Cheng , Yang Bing-Qi , Cheng Lan-Xing EMAIL logo and Tai Xi-Shi ORCID logo EMAIL logo
Published/Copyright: November 1, 2023
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Zeitschrift für Kristallographie - New Crystal Structures
From the journal Zeitschrift für Kristallographie - New Crystal Structures Volume 238 Issue 6

Abstract

C22H23N3O9Cu, triclinic, P 1 ‾ (no. 2), a = 9.0356(2) Å, b = 9.6247(3) Å, c = 14.2969(3) Å, α = 86.989(2)°, β = 86.414(2)°, γ = 66.913(2)°, V = 1140.98(5) Å3, Z = 2, Rgt(F) = 0.0405, wRref(F2) = 0.1172, T = 297.88(10) K.

CCDC no.: 2302372

Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal: Blue block
Size: 0.15 × 0.13 × 0.12 mm
Wavelength: Cu Kα radiation (1.54184 Å)
μ: 1.88 mm−1
Diffractometer, scan mode: XtaLAB Synergy, ω
θmax, completeness: 77.6°, >99 %
N(hkl)measured, N(hkl)unique, Rint: 13,245, 4558, 0.039
Criterion for Iobs, N(hkl)gt: Iobs > 2σ(Iobs), 4087
N(param)refined: 329
Programs: Bruker [1], Olex2 [2], SHELX [3], Diamond [4]
Table 2:

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

Atom x y z Uiso*/Ueq
C1 −0.0680 (3) 0.6665 (2) 0.75667 (16) 0.0466 (5)
H1 −0.017981 0.702609 0.708113 0.056*
C2 −0.2242 (3) 0.7539 (3) 0.7845 (2) 0.0573 (6)
H2 −0.279368 0.846994 0.755059 0.069*
C3 −0.2970 (3) 0.7009 (3) 0.8567 (2) 0.0625 (7)
H3 −0.402438 0.757956 0.876959 0.075*
C4 −0.2126 (3) 0.5621 (3) 0.89921 (19) 0.0560 (6)
H4 −0.260180 0.525087 0.948538 0.067*
C5 −0.0569 (3) 0.4794 (2) 0.86742 (15) 0.0416 (4)
C6 0.0458 (3) 0.3294 (2) 0.90766 (14) 0.0423 (5)
C7 −0.0040 (3) 0.2596 (3) 0.98322 (17) 0.0557 (6)
H7 −0.106847 0.304420 1.010974 0.067*
C8 0.1037 (4) 0.1211 (3) 1.01626 (19) 0.0633 (7)
H8 0.073508 0.071422 1.066710 0.076*
C9 0.2551 (4) 0.0576 (3) 0.97419 (19) 0.0646 (7)
H9 0.328422 −0.035164 0.995934 0.077*
C10 0.2969 (3) 0.1327 (3) 0.89971 (18) 0.0572 (6)
H10 0.399427 0.089693 0.871280 0.069*
C11 0.3354 (3) 0.6365 (3) 0.81864 (16) 0.0488 (5)
C12 0.3314 (2) 0.6416 (2) 0.71201 (15) 0.0423 (5)
C13 0.3660 (3) 0.7501 (3) 0.65585 (18) 0.0506 (5)
H13 0.396170 0.820311 0.682879 0.061*
C14 0.3549 (3) 0.7512 (3) 0.56175 (18) 0.0525 (6)
H14 0.379141 0.821728 0.523842 0.063*
C15 0.3069 (3) 0.6461 (3) 0.52081 (16) 0.0458 (5)
C16 0.2895 (3) 0.6408 (3) 0.42348 (17) 0.0582 (6)
H16 0.310379 0.709627 0.382234 0.070*
C17 0.2427 (4) 0.5359 (3) 0.39017 (17) 0.0628 (7)
H17 0.231864 0.533945 0.326044 0.075*
C18 0.2101 (3) 0.4301 (3) 0.45006 (17) 0.0555 (6)
H18 0.177607 0.359486 0.425571 0.067*
C19 0.2262 (2) 0.4309 (2) 0.54490 (14) 0.0414 (4)
C20 0.2756 (2) 0.5389 (2) 0.58185 (14) 0.0390 (4)
C21 0.2931 (3) 0.1775 (3) 0.60016 (18) 0.0537 (6)
H21A 0.322089 0.154278 0.534669 0.064*
H21B 0.235956 0.115767 0.624921 0.064*
C22 0.4453 (3) 0.1377 (3) 0.65315 (16) 0.0499 (5)
Cu1 0.24617 (3) 0.39114 (3) 0.76500 (2) 0.03891 (13)
N1 0.0152 (2) 0.5306 (2) 0.79716 (12) 0.0396 (4)
N2 0.1935 (2) 0.2667 (2) 0.86674 (12) 0.0438 (4)
N3 0.2891 (2) 0.53944 (19) 0.67594 (12) 0.0378 (4)
O1 0.3328 (3) 0.7512 (2) 0.85545 (14) 0.0748 (6)
O2 0.3376 (2) 0.5178 (2) 0.86003 (11) 0.0530 (4)
O3 0.18771 (18) 0.33480 (17) 0.60691 (11) 0.0451 (3)
O4 0.44274 (19) 0.22149 (18) 0.72007 (11) 0.0474 (4)
O5 0.5635 (3) 0.0249 (2) 0.62955 (15) 0.0767 (6)
O6 0.5905 (3) 0.3070 (3) 0.95692 (16) 0.0831 (6)
H6A 0.508609 0.382446 0.939031 0.125*
H6B 0.596455 0.322175 1.014362 0.125*
O7 0.7470 (3) 0.1554 (5) 0.8035 (2) 0.1204 (12)
H7A 0.710738 0.217715 0.847541 0.181*
H7B 0.664147 0.164423 0.774618 0.181*
O8 0.0612 (5) 0.0233 (5) 0.7446 (3) 0.1287 (11)
H8A 0.115716 −0.014590 0.792587 0.193*
H8B −0.030172 0.089099 0.761473 0.193*
O9 −0.0714 (5) 0.9267 (4) 0.5844 (3) 0.1298 (12)
H9A −0.052639 0.986184 0.619243 0.195*
H9B −0.094777 0.968119 0.530334 0.195*

1 Source of materials

The synthesis of Cu(II) complex proceeds as following method: 0.2471 g 8-carboxymethoxy-quinoline-2-carboxylic acid (1.0 mmol), 0.1997 g cupric acetate monohydrate (0.50 mmol), 0.1562 g 2,2′-bipyridine (1.0 mmol), and 0.080 g NaOH (2.0 mmol) were added to 25 mL of ethanol-water solution (v:v = 3:2) with stirring. The mixture immediately became cloudy, and continued to react at 75 °C for 5 h. After cooling to room temperature, it is filtered, and the filtrate remains still placed. The blue block crystals of the title Cu(II) complex were obtained in 18 days.

2 Experimental details

The hydrogen atoms were positioned geometrically (C–H = 0.93–0.97 Å, O–H = 0.85 Å). Their Uiso values were set to 1.2Ueq or 1.5Ueq of the parent atoms.

3 Comment

Recently, the studies on the structure and property of copper(II) complexes has been of one interest to chemists. Because they show novel structures [5] and excellent properties in anticancer properties [6], DNA binding and cleavage properties [7], magnetic property [8], etc. 8–carboxymethoxy-quinoline-2-carboxylic acid is an excellent polydentate ligand with four carboxylate-oxygen, one ether-oxygen and one pyridine-nitrogen atom. And it is known that it forms Mn(II), Co(II), Ni(II), and Cu(II) complexes as tetradentate O,O,N,O-chelates [9, 10]. Our research group has also been studying the synthesis, structural characterization and properties of copper complexes [11], [12], [13]. To continue the structure of the copper complexes, we have synthesized a copper complex using 8-carboxymethoxy-quinoline-2-carboxylic acid, cupric acetate monohydrate, 2,2′-bipyridine, and NaOH as materials. The coordination environment of the title Cu(II) complex is shown in Figure. As shown in Figure, the title Cu(II) complex is composed of one copper(II) ion, one 8-carboxymethoxy-quinoline-2-carboxylate ligand, one 2,2′-bipyridine ligand, and four uncoordinated water molecules. The copper(II) ion is six-coordinated with three carboxylate oxygen atoms (O2 and O4), one ether oxygen atom (O3) and one nitrogen atom (N3) from the same deprotonated 8-carboxymethoxy-quinoline-2-carboxylate ligand, and two nitrogen atoms (N1 and N2) of 2,2′-bipyridine ligand, forming a distorted octahedron geometry with N2 and N3 atoms at axial position. The 8-carboxymethoxy-quinoline-2-carboxylate ligand is tetradentate coordination mode, however its two deprotonated carboxylate groups adopt monodentate coordination mode. The bond lengths of Cu–O are 1.9816(16)–2.2619(17) Å, and the Cu–N bond lengths are 1.9883(17)–2.0286(17) Å, and the coordination angles around Cu(II) ion are in the range of 77.67(7)–171.87(7)°. The 8-carboxymethoxy-quinoline-2-carboxylate ligand coordinates with the copper(II) ion through the N and O atoms, forming three stable five-membered rings (ring 1: Cu1–O2–C11–C12–N3–Cu1, ring 2: Cu1–O3–C19–C20–N3–Cu1, ring 3: Cu1–O3–C21–C22–O4–Cu1). And the dihedral angles of ring 1 and ring 2, ring 2 and ring 3 are 3.92° and 73.79°, respectively, indicating that the copper(II) complex molecule is non-planar. The copper(II) complex molecules form 1D chain by the O–H⋯O hydrogen bonds.

Corresponding authors: Cheng Lan-Xing, Henan Academy of Sciences, Zhengzhou, 450046, P.R. China; and Henan Chemical Industry Research Institute Co., Zhengzhou, 450052, P.R. China, E-mail: ; and Tai Xi-Shi, College of Chemistry and Chemical Engineering, Weifang University, Weifang, Shandong 261061, P.R. China, E-mail:

Funding source: Talent Training Support of Henan Academy of Sciences

Award Identifier / Grant number: 220608086, 230608020, and 220208005

Funding source: National Natural Science Foundation of China

Award Identifier / Grant number: 21171132

Funding source: Science Foundation of Weifang

Award Identifier / Grant number: 2020ZJ1054

  1. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

  2. Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  3. Research funding: This project was supported by the Talent Training Support of Henan Academy of Sciences (No. 220608086, 230608020, and 220208005), the National Natural Science Foundation of China (No. 21171132, http://dx.doi.org/10.13039/501100001809), and Science Foundation of Weifang (2020ZJ1054).

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Received: 2023-07-25
Accepted: 2023-10-20
Published Online: 2023-11-01
Published in Print: 2023-12-15

© 2023 the author(s), published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 International License.

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  54. Crystal structure of O-(3-(benzo[d]thiazol-2-yl)naphthalen-2-yl) O-phenyl carbonothioate, C24H15NO2S2
  55. The crystal structure of (E)-4-fluoro-N′-(1-(4-hydroxyphenyl)propylidene)benzohydrazide, C16H15FN2O2
  56. Crystal structure of (E)-1-(benzo[d]thiazol-2-yl)-N-(4,5-dihydropyren-2-yl)methanimine, C24H16N2S
  57. Crystal structure of 3-((4-bromophenyl)thio)-1H-indole, C14H10BrNS
  58. Synthesis and crystal structure of 1-((7-hydroxy-3-(4-hydroxy-3-nitrophenyl)-4-oxo-4H-chromen-8-yl)methyl)piperidin-1-ium-4-carboxylate monohydrate, C22H22N2O9
  59. Synthesis and crystal structure of (3E,5S,10S,13S,14S,17Z)-17-ethylidene-10,13-dimethylhexadecahydro-3H-cyclopenta[α]phenanthren-3-one O-(methacryloyl) oxime, C50H74N2O4
  60. Crystal structure of the hydrogen storage active phase La12Mg46LiMn
  61. The crystal structure of the salt: 4-((1,3-dioxoisoindolin-2-yl)carbamoyl)pyridine-1-ium 2-carboxybenzoate, C14H10N3O3·C8H5O4
  62. Crystal structure of (2-(2-pyridine)-benzimidazole-κ2 N,N′)-bis(1-phenylpyrazole-κ2 C,N)iridium(III) hexafluorophosphate, C30H22F6IrN7P
  63. Crystal structure of dichlorido-bis[2-(2,4-difluorophenyl)pyridine-κ1N]platinum(II), C22H14Cl2F4N2Pt
  64. Crystal structure of (5R,8R,9R,10R,12R,13R,14R, 17S,17Z)-2-((3-fluoropyridin-4-yl)methylene)-12-hydroxy-4,4,8,10,14-pentamethyl-17-((R)-2,6,6-trimethyltetrahydro-2H-pyran-2-yl)hexadecahydro-3H-cyclopenta[a]phenanthren-3-one, C36H52FNO3
https://doi.org/10.1515/ncrs-2023-0347
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Articles in the same Issue

  1. Frontmatter
  2. New Crystal Structures
  3. Crystal structure of bis(dimethylammonium) poly[(μ4-1,1′-(1,4-phenylenebis(methylene))bis(1H-pyrazole-3,5-dicarboxylato))-κ6O1, N2:O2:O3:O1′,N2′]nickel (II)], C22H26N6NiO8
  4. Hydrothermal synthesis and crystal structure of catena-poly[diaqua-bis(μ2-4-((pyridin-4-ylmethyl)amino)benzoato-κ2N:O)cobalt(II)] – 4,4′-bipyridine – water (1/2/2)
  5. Crystal structure of (2S,3S,4S,5S, Z)-2,3,5,6-tetrakis(benzyloxy)-4-hydroxyhexanal oxime, C34H37NO6
  6. The crystal structure of hexakis(3-thiophenecarboxylato-κ2O,O″)-bis(1,10-phenanthroline-κ2N,N′) trimanganese(II), C54H34N4O12S6Mn3
  7. Crystal structure of catena-poly[(μ2-1,4-di(pyridin-4-yl)benzene-κ2N:N′)-(4-bromobenzoate-κ2O:O′)-(μ-2-bromobenzoate-κ2O,O′)nickel(II)] – water (2/1), C30H21Br2N2NiO4.5
  8. The crystal structure of poly[(μ3-1,3-phenylenedioxydiacetate-κ5O,O,O′,O″,O‴)-bis(4′-(4-(1H-imidazol-1-yl)phenyl)-4,2′:6′,4″-terpyridine-kN) cadmium(II)], C58H42CdN10O6
  9. The crystal structure of 5-chloro-6′-methyl-3-(4-(methylsulfonyl)phenyl)-[2,3′-bipyridin]-1′-ium 4-methylbenzenesulfonate
  10. Crystal structure of poly[(μ-benzoato)-(μ-cis-4–hydroxy-D-proline)lithium], C12H14LiNO5
  11. The crystal structure of catena-poly[aqua-(4-iodopyridine-2,6-dicarboxylato-κ3N,O,O′)-copper(II)] monohydrate, C7H6NO6ICu
  12. The crystal structure of catena-[diaqua-(4-acetylphenoxyacetato-κ2O,O)-bis(4-acetylphenoxyacetato-κ3O,O:O)-dihydrate-lanthanum(III)]–4,4′-bipyridine (2/1), C35H35NO14La
  13. The crystal structure of catena-poly[(4-iodopyridine-2,6-dicarboxylato-κ4 O,N,O′,O′′)(4-imidazol-1-yl-pyridine-κN)copper(II)], C15H9N4O4ICu
  14. Crystal structure of polybis(μ 4-3,5-dicarboxylatopyrazol-1-yl)-bis(N,N-dimethylformamide)tri-copper(II)–acetonitrile (1/2), C20H22Cu3N8O10
  15. Crystal structure of poly[(μ2-5-hydroxy-isophthalato-κ4O,O′:O″,O‴)-(μ2-1,5-bis(imidazol-2-methyl)pentane-κ2N:N′)cadmium(II)], C21H24CdN4O5
  16. The crystal structure of poly[bis(μ2-1,4-bi(1-imidazolyl)benzene-κ2N:N′)bis(μ2-4,4′-methylenebis(3-hydroxy-2-naphthoate)-κ2O:O′)cobalt(II)], C35H24CoN4O6
  17. The crystal structure of a cobalt-vanadium-oxido hydrate
  18. The crystal structure of catena-poly[(μ 2-2H-1,2,3-triazole-4,5-dicarboxylato-κ 2 O, O′)-(μ 2-1,3-bis((1H-imidazol-1-yl)methyl)benzene-κ 2 N,N′) zinc(II)], C18H15N7O4Zn
  19. Crystal structure of poly[diaqua-(bis(m2-1,4-bis(imidazol-1-ylmethyl)benzene)-κ2N,N′-manganese] dichloride, C28H32MnN8O2Cl2
  20. The crystal structure of 9,10-dimethoxy-5,6-dihydro-[1,3]dioxolo[4,5-g]isoquinolino [3,2-a]isoquinolin-7-ium (E)-3-(4-nitrophenyl)acrylate pentahydrate, C29H34N2O13
  21. Crystal structure of poly[(μ6-ammoniotris(methylene))tris(hydrogen phosphonato)cadmium(II)], C3H10CdNO9P3
  22. Crystal structure of Zn2[(1,1′-(hexane-1,6-diyl)bis(3-(pyridin-3-yl)urea))·(H2O)2·(DMF)2·(SO4)2], C24H50N8O18S2Zn2
  23. The crystal structure of 2-anilino-1,4-naphthoquinone, C10H11NO2
  24. Crystal structure of (E)-2-(2-(4-(diethylamino)styryl)-1-ethyl-1,4-dihydroquinolin-4-yl) malononitrile, C26H26N4
  25. Crystal structure of ethyl 2-((2,6-dichloro-4-(cyanomethyl)phenyl) amino)benzoate, C17H14Cl2N2O2
  26. Synthesis and crystal structure of 2-(3-oxo-3-phenylpropyl)isoindoline-1,3-dione, C17H13NO3
  27. The crystal structure of bis(acetonitrile-κ1N)tetrakis(μ2-2,6-difluorobenzoato-κ2O:O′)rhodium(II) (Rh–Rh), C32H18F8O8N2Rh2
  28. The crystal structure of a new polymorph of 6-hydroxy-2-naphthoic acid, C11H8O3
  29. The crystal structure of [(8-carboxymethoxy-quinoline-2-carboxylate-κ4N,O,O,O)-2,2′-bipyridine-κ2N-copper(II)] tetrahydrate, C22H23N3O9Cu
  30. The crystal structure of ethyl 4-hydroxy-2-(4-methoxyphenyl)-5-oxo-1-(2-oxo-2H-chromen-6-yl)-2,5-dihydro-1H-pyrrole-3-carboxylate, C23H19NO7
  31. Crystal structure of 7-hydroxy-3,4-dihydronaphthalen-1(2H)-one, C10H10O2
  32. Crystal structure of bis(tetrapropylammonium) dodecacarbonyltetratelluridotetraferrate(2-), (Pr4N)2[Fe4Te4(CO)12]
  33. The crystal structure of poly[bis(μ2−3−aminopyridine−4−carboxylato−κ2N:O)Zinc(II)], [Zn(C6H5N2O2)2] n
  34. The crystal structure of methyl 5-nitro-2-(tosyloxy)benzoate, C15H13NO7S
  35. The crystal structure of 18-crown-6 ― tetraaqua-dichlorido-di-μ2-chloridodicopper(II) (2/1), C12H32O10Cu2Cl4
  36. Crystal structure of 6,6a,7,8,9,10-hexahydro-5H-pyrazino [2,3-e]pyrido[1,2-a]pyrazine, C10H14N4
  37. Crystal structure of catena-poly-{diaqua-bis[μ-(((4-chlorophenyl)sulfonyl)glycinato-κO)](μ2-4, 4′-bipyridine-κ2N:N′)cobalt(II)} dihydrate, C26H30Cl2CoN4O12S2
  38. Crystal structure of bis{N′-[1,3-diphenylprop-2-en-1-ylidene]-N-phenylcarbamohydrazonothioato}zinc(II), C44H36N6S2Zn
  39. Crystal structure of tetraaqua-bis(((4-chlorophenyl)sulfonyl)glycinato-κO)cobalt(II) dihydrate, C16H26Cl2CoN2O14S2
  40. Crystal structure of 2-(5-phenyl-1-(quinolin-2-yl)-4,5-dihydro-1H-pyrazol-3-yl)phenol, C24H19N3O
  41. Crystal structure of 2-((2-fluoro-4-(trifluoromethyl)phenyl)(hydroxy)methyl)-7-methoxy-3,4-dihydronaphthalen-1((2H))-one, C19H16F4O3
  42. Crystal structure of 2-amino-4-(2-fluoro-3-(trifluoromethyl)phenyl)-9-methoxy-1,4,5,6-tetrahydrobenzo[h]quinazolin-3-ium chloride, C20H18ClF4N3O
  43. Crystal structure of (2-phenylimino methylquinoline-κ 2 N,N′)-bis(1–phenylpyrazole-κ 2 C,N)-iridium(III) hexafluorophosphate, C34H26F6IrN6P
  44. Crystal structure of (3-hydroxy-4-methoxyphenyl)(pyrrolidin-1-yl)methanone, C12H15NO3
  45. The crystal structure of bis(trimethylsulfoxonium) catena-poly[µ2-hexabromido-indium(III)sodium(I)] C6H18O2S2NaInBr6
  46. Crystal structure of N-cyclopropyl-3-hydroxy-4-methoxybenzamide, C11H13NO3
  47. The crystal structure of (bis(benzimidazol-2-yl-methyl)amine-κ3N,N′,N″ )-(dihydrogen L-malate-κ2O,O ′)copper(II) perchlorate dihydrate, CuC20H24ClN5O12
  48. Crystal structure of (1E,1′E)-4,4′-(9,9-diethyl-9H-fluorene-2,7-diyl)dibenzaldehyde dioxime, C31H28N2O2
  49. Crystal structure of diethyl 1,9-bis(4-fluorophenyl)-4,6-diphenylhexahydro-3H-2,7,3,5-(epimethanetriyliminomethanetriyl)cyclopenta [b]pyridine-3,7(2H)-dicarboxylate, C40H36F2N2O4
  50. Crystal structure of bis(benzene-1 carboxylato-O 3,5-carboxyl-κ1O)-[(5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ4N,N′,N′′,N′′′)nickel(II) ─ benzene-1,3,5-tricarboxylic acid ─ water (1/2/4), C52H66N4NiO28
  51. Crystal structure of 1,4-dibromo-2,5-bis(2-methoxyethoxy)benzene-1,4-diol, C12H16Br2O4
  52. Crystal structure of dicarbonyl[N,N′-(1,2-dimethyl-1,2-ethanediylidene)bis[2,6-bis(1-methylethyl)benzenamine]-N,N′]nickel(0), C30H40N2NiO2
  53. Crystal structure of 1,4-dibromo-2,5-bis(prop-2-yn-1-yloxy)benzene, C12H8Br2O2
  54. Crystal structure of O-(3-(benzo[d]thiazol-2-yl)naphthalen-2-yl) O-phenyl carbonothioate, C24H15NO2S2
  55. The crystal structure of (E)-4-fluoro-N′-(1-(4-hydroxyphenyl)propylidene)benzohydrazide, C16H15FN2O2
  56. Crystal structure of (E)-1-(benzo[d]thiazol-2-yl)-N-(4,5-dihydropyren-2-yl)methanimine, C24H16N2S
  57. Crystal structure of 3-((4-bromophenyl)thio)-1H-indole, C14H10BrNS
  58. Synthesis and crystal structure of 1-((7-hydroxy-3-(4-hydroxy-3-nitrophenyl)-4-oxo-4H-chromen-8-yl)methyl)piperidin-1-ium-4-carboxylate monohydrate, C22H22N2O9
  59. Synthesis and crystal structure of (3E,5S,10S,13S,14S,17Z)-17-ethylidene-10,13-dimethylhexadecahydro-3H-cyclopenta[α]phenanthren-3-one O-(methacryloyl) oxime, C50H74N2O4
  60. Crystal structure of the hydrogen storage active phase La12Mg46LiMn
  61. The crystal structure of the salt: 4-((1,3-dioxoisoindolin-2-yl)carbamoyl)pyridine-1-ium 2-carboxybenzoate, C14H10N3O3·C8H5O4
  62. Crystal structure of (2-(2-pyridine)-benzimidazole-κ2 N,N′)-bis(1-phenylpyrazole-κ2 C,N)iridium(III) hexafluorophosphate, C30H22F6IrN7P
  63. Crystal structure of dichlorido-bis[2-(2,4-difluorophenyl)pyridine-κ1N]platinum(II), C22H14Cl2F4N2Pt
  64. Crystal structure of (5R,8R,9R,10R,12R,13R,14R, 17S,17Z)-2-((3-fluoropyridin-4-yl)methylene)-12-hydroxy-4,4,8,10,14-pentamethyl-17-((R)-2,6,6-trimethyltetrahydro-2H-pyran-2-yl)hexadecahydro-3H-cyclopenta[a]phenanthren-3-one, C36H52FNO3
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