Home The crystal structure of bis(μ2-5-chloro-2-oxido-N-(1-oxidopropylidene)benzohydrazonato-κ5 N,O,O′:N′,O′′)-octakis(pyridine-κ1 N)trinickel(II) C60H56Cl2N12Ni3O6
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The crystal structure of bis(μ2-5-chloro-2-oxido-N-(1-oxidopropylidene)benzohydrazonato-κ5 N,O,O′:N′,O′′)-octakis(pyridine-κ1 N)trinickel(II) C60H56Cl2N12Ni3O6

  • Wang Xin , Yang Liguo ORCID logo EMAIL logo , Dong Yizhuo , Ye Yanlin and Wang Yifan
Published/Copyright: April 25, 2022

Abstract

C60H56Cl2N12Ni3O6, triclinic, P 1 (no. 2), a = 12.684(5) Å, b = 12.827(5) Å, c = 19.100(7) Å, α = 84.641(4)°, β = 81.178(4)°, γ = 85.471(4)°, V = 3050.7(19) Å3, Z = 2, R gt (F) = 0.0267, wR ref (F 2) = 0.0735, T = 298 K.

CCDC no.: 2164555

The molecular structure is shown in the figure. 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: Red block
Size: 0.16 × 0.10 × 0.08 mm
Wavelength: Mo Kα radiation (0.71073 Å)
μ: 1.06 mm−1
Diffractometer, scan mode: Bruker APEX-II, φ and ω
θ max, completeness: 25.0°, >99%
N(hkl)measured, N(hkl)unique, R int: 36,535, 10710, 0.018
Criterion for I obs, N(hkl)gt: I obs > 2 σ(I obs), 9545
N(param)refined: 750
Programs: Bruker [1], SHELX [2, 3]
Table 2:

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

Atom x y z U iso*/U eq
Ni1 0.76551 (2) 0.46264 (2) 0.23100 (2) 0.02833 (6)
Ni2 0.45812 (2) 0.26706 (2) 0.31169 (2) 0.03122 (7)
Ni3 1.01724 (2) 0.72588 (2) 0.20044 (2) 0.03256 (7)
Cl1 0.88114 (5) 0.13772 (5) 0.53246 (3) 0.06341 (17)
Cl2 0.59538 (7) 0.85341 (6) −0.01967 (5) 0.0953 (3)
N1 0.89806 (11) 0.54340 (11) 0.23924 (8) 0.0308 (3)
N2 0.38247 (12) 0.40627 (12) 0.35996 (8) 0.0367 (3)
N3 0.62356 (11) 0.38829 (11) 0.23214 (7) 0.0297 (3)
N4 0.89672 (11) 0.63883 (11) 0.19541 (7) 0.0293 (3)
N5 0.60039 (11) 0.32498 (11) 0.29694 (7) 0.0289 (3)
N6 0.85804 (12) 0.34286 (12) 0.17275 (8) 0.0372 (3)
N7 1.12266 (12) 0.62260 (13) 0.13038 (8) 0.0401 (4)
N8 1.15139 (13) 0.80751 (13) 0.20925 (9) 0.0438 (4)
N9 0.30416 (13) 0.21186 (13) 0.32035 (9) 0.0441 (4)
N10 0.52311 (13) 0.12369 (12) 0.26087 (9) 0.0405 (4)
N12 0.66354 (13) 0.58058 (13) 0.28825 (9) 0.0409 (4)
N13 0.92531 (14) 0.82797 (14) 0.27546 (10) 0.0474 (4)
O6 0.76995 (10) 0.56861 (9) 0.14347 (6) 0.0320 (3)
O7 0.45727 (9) 0.34612 (10) 0.21283 (6) 0.0349 (3)
O8 0.48111 (10) 0.20025 (11) 0.40821 (7) 0.0393 (3)
O9 1.03615 (10) 0.61286 (10) 0.28161 (6) 0.0361 (3)
O10 0.76214 (10) 0.36722 (10) 0.32171 (7) 0.0386 (3)
O11 0.98113 (11) 0.82310 (11) 0.11870 (7) 0.0429 (3)
C1 0.57234 (14) 0.19073 (13) 0.43283 (9) 0.0309 (4)
C2 0.66584 (14) 0.24471 (13) 0.40306 (9) 0.0292 (4)
C3 0.58119 (16) 0.12104 (14) 0.49447 (9) 0.0364 (4)
H3 0.5217 0.0853 0.5152 0.044*
C4 0.76175 (15) 0.15820 (15) 0.49530 (10) 0.0373 (4)
C5 0.73030 (15) 0.75367 (14) 0.06627 (10) 0.0366 (4)
H5 0.6836 0.7001 0.0723 0.044*
C6 0.82972 (13) 0.64325 (13) 0.14900 (9) 0.0273 (3)
C7 0.54547 (14) 0.39128 (13) 0.19358 (9) 0.0313 (4)
C8 0.67302 (16) 0.10383 (15) 0.52503 (10) 0.0396 (4)
H8 0.6757 0.0567 0.5649 0.048*
C9 0.67648 (13) 0.31774 (13) 0.33722 (9) 0.0289 (4)
C10 0.86523 (16) 0.91447 (14) 0.04736 (10) 0.0385 (4)
H10 0.9098 0.9699 0.0409 0.046*
C11 0.81982 (14) 0.74210 (13) 0.10171 (9) 0.0288 (4)
C12 0.89252 (14) 0.82477 (14) 0.09182 (9) 0.0319 (4)
C13 0.56197 (17) 0.44861 (17) 0.12060 (10) 0.0434 (5)
H13A 0.6302 0.4802 0.1132 0.052*
H13B 0.5064 0.5046 0.1177 0.052*
C14 0.97325 (14) 0.53890 (14) 0.28056 (9) 0.0326 (4)
C15 0.98858 (17) 0.44021 (17) 0.32848 (11) 0.0479 (5)
H15A 1.0616 0.4113 0.3175 0.058*
H15B 0.9416 0.3888 0.3189 0.058*
C16 0.81866 (19) 0.24940 (17) 0.17101 (13) 0.0571 (6)
H16 0.7505 0.2384 0.1952 0.069*
C17 0.24588 (18) 0.54586 (18) 0.36465 (13) 0.0536 (6)
H17 0.1904 0.5823 0.3442 0.064*
C18 0.30218 (16) 0.46192 (16) 0.33357 (11) 0.0452 (5)
H18 0.2831 0.4428 0.2917 0.054*
C19 0.77668 (18) 0.92415 (16) 0.01328 (11) 0.0465 (5)
H19 0.7621 0.9844 −0.0156 0.056*
C20 1.25779 (18) 0.4809 (2) 0.11957 (13) 0.0583 (6)
H20 1.3094 0.4380 0.1400 0.070*
C21 0.40948 (18) 0.43660 (18) 0.41901 (12) 0.0509 (5)
H21 0.4664 0.4001 0.4378 0.061*
C22 0.3571 (2) 0.5196 (2) 0.45379 (13) 0.0649 (7)
H22 0.3782 0.5381 0.4952 0.078*
C23 1.10556 (18) 0.60958 (19) 0.06449 (11) 0.0516 (5)
H23 1.0537 0.6534 0.0450 0.062*
C24 0.70962 (17) 0.84219 (16) 0.02279 (11) 0.0465 (5)
C25 1.1618 (2) 0.5336 (2) 0.02395 (13) 0.0663 (7)
H25 1.1478 0.5268 −0.0217 0.080*
C26 1.19850 (16) 0.55869 (18) 0.15619 (11) 0.0497 (5)
H26 1.2121 0.5672 0.2017 0.060*
C27 0.8735 (2) 0.1693 (2) 0.13546 (16) 0.0757 (8)
H27 0.8427 0.1058 0.1356 0.091*
C28 0.2732 (2) 0.57477 (19) 0.42637 (13) 0.0602 (6)
H28 0.2359 0.6304 0.4492 0.072*
C29 0.5598 (2) 0.3764 (2) 0.06248 (12) 0.0665 (7)
H29A 0.6190 0.3249 0.0622 0.100*
H29B 0.5650 0.4168 0.0173 0.100*
H29C 0.4941 0.3419 0.0711 0.100*
C30 1.2386 (2) 0.4687 (2) 0.05214 (14) 0.0650 (7)
H30 1.2771 0.4170 0.0259 0.078*
C31 0.95561 (17) 0.35554 (18) 0.13756 (11) 0.0502 (5)
H31 0.9849 0.4197 0.1377 0.060*
C32 0.9740 (2) 0.1837 (2) 0.09972 (16) 0.0770 (8)
H32 1.0129 0.1304 0.0753 0.092*
C33 1.0156 (2) 0.2781 (2) 0.10076 (14) 0.0691 (7)
H33 1.0837 0.2904 0.0769 0.083*
C34 0.9656 (2) 0.4590 (3) 0.40697 (13) 0.0797 (9)
H34A 1.0043 0.5167 0.4156 0.120*
H34B 0.9876 0.3970 0.4347 0.120*
H34C 0.8904 0.4750 0.4202 0.120*
C35 0.8807 (2) 0.7914 (2) 0.33917 (14) 0.0722 (7)
H35 0.8869 0.7195 0.3513 0.087*
C36 0.6724 (2) 0.6025 (2) 0.35342 (12) 0.0614 (6)
H36 0.7297 0.5713 0.3745 0.074*
C37 0.5406 (2) 0.12204 (18) 0.18996 (12) 0.0566 (6)
H37 0.5175 0.1808 0.1627 0.068*
C38 1.17862 (18) 0.82120 (18) 0.27182 (12) 0.0519 (5)
H38 1.1381 0.7912 0.3123 0.062*
C39 0.6092 (2) −0.0485 (2) 0.26670 (17) 0.0745 (7)
H39 0.6322 −0.1068 0.2945 0.089*
C40 0.6272 (2) −0.0472 (2) 0.19423 (18) 0.0754 (8)
H40 0.6635 −0.1038 0.1720 0.090*
C41 0.58030 (18) 0.62648 (17) 0.25975 (13) 0.0545 (6)
H41 0.5741 0.6133 0.2135 0.065*
C42 0.2543 (2) 0.2084 (2) 0.26458 (15) 0.0649 (7)
H42 0.2898 0.2274 0.2194 0.078*
C43 0.25135 (19) 0.1825 (2) 0.38400 (14) 0.0639 (7)
H43 0.2855 0.1840 0.4236 0.077*
C44 1.3221 (2) 0.9219 (2) 0.2214 (2) 0.0878 (10)
H44 1.3778 0.9629 0.2256 0.105*
C45 1.2627 (2) 0.8768 (2) 0.28046 (16) 0.0722 (8)
H45 1.2790 0.8838 0.3256 0.087*
C46 0.5559 (2) 0.03831 (17) 0.29872 (14) 0.0591 (6)
H46 0.5431 0.0363 0.3481 0.071*
C47 0.5033 (2) 0.6921 (2) 0.29470 (18) 0.0809 (9)
H47 0.4455 0.7208 0.2731 0.097*
C48 0.0987 (2) 0.1478 (3) 0.3376 (2) 0.0997 (12)
H48 0.0292 0.1267 0.3433 0.120*
C49 0.5909 (2) 0.0386 (2) 0.15531 (16) 0.0746 (8)
H49 0.6000 0.0407 0.1060 0.090*
C50 0.8604 (2) 1.0001 (2) 0.3060 (2) 0.0828 (9)
H50 0.8547 1.0717 0.2929 0.099*
C51 0.9145 (2) 0.93162 (19) 0.25926 (15) 0.0623 (6)
H51 0.9448 0.9587 0.2145 0.075*
C52 0.5989 (3) 0.6706 (3) 0.39175 (15) 0.0884 (10)
H52 0.6080 0.6860 0.4370 0.106*
C53 0.8251 (3) 0.8555 (3) 0.38886 (17) 0.0985 (11)
H53 0.7949 0.8271 0.4333 0.118*
C54 0.8156 (3) 0.9613 (3) 0.3714 (2) 0.0948 (11)
H54 0.7790 1.0061 0.4038 0.114*
C55 0.1497 (2) 0.1501 (3) 0.3941 (2) 0.0905 (10)
H55 0.1161 0.1299 0.4396 0.109*
C56 0.1508 (3) 0.1771 (3) 0.2717 (2) 0.0951 (11)
H56 0.1172 0.1761 0.2318 0.114*
C57 0.5132 (3) 0.7140 (3) 0.3613 (2) 0.0941 (11)
H57 0.4621 0.7583 0.3860 0.113*
C58 1.2111 (2) 0.8490 (3) 0.15190 (15) 0.0834 (10)
H58 1.1935 0.8398 0.1075 0.100*
C59 1.2984 (3) 0.9056 (3) 0.15538 (19) 0.1081 (14)
H59 1.3401 0.9319 0.1141 0.130*
C60 0.75782 (14) 0.22719 (14) 0.43608 (9) 0.0331 (4)
H60 0.8179 0.2633 0.4173 0.040*

Source of material

The ligand was synthesized from the reaction of 5-chloride-Salicylate hydrazazine (80 mg, 0.60 mmol) and methyl propionate (50 mg, 0.60 mmol) according to the procedure reported earlier [4]. Yield (0.012 g, 70%).

Experimental details

The H atoms were geometrically placed (C–H = 0.95–0.98 Å) and refined as riding with U iso(H) = 1.2–1.5 U eq(C).

Comment

Ligand choice plays a crucial role in the course of exploring polynuclear heterometallic complexes with the desired properties. For this purpose, various ligands have been developed. Among the wealth of ligands used in the preparation of such complexes, a prominent position is occupied by multidentate Schiff base ligands. Many ligands can form multinuclear metal complexes, but Schiff-based ligands are better applicants as they own versatile structures. Depending on the structures of their metal complexes with Schiff base ligands they are similar with that of some biological systems. So the Schiff base ligand is important for the development of coordination chemistry. In the following account, we synthesized a new Schiff base strating material: (E)-5-chloro-2-hydroxy-N-((E)-1-hydroxypropylidene)benzohydrazonic acid. The similar complexes have been reported [4], [5], [6], [7].

As shown in Figure 1, the title compound crystallizes in the triclinic space group P 1 with two formula units in the unit cell. The title complex is composed of three Ni atoms, two Schiff base ligans and six pyridines. It is the first trinuclear Ni complex with the 5-chloro-2-oxido-N-(1-oxidopropylidene)benzohydrazonato ligand. The coordination geometry of the three Ni atoms is octahedral. The Ni1 atoms is bound to two oxygens, two nitrogens of two ligands and two nitrogens atoms of pyridine ligands. The bond lengths of Ni1–O are 2.0228 and 2.0504 Å, the bond length of Ni1–N are 2.0764, 2.0993, 2.1471 and 2.1734 Å, which are similar to the corresponding values of the reference. For two equivalent Ni2 and Ni3 atoms, the octahedral geometry is realized with oxygen, nitrogen, and pyridine nitrogen atoms. The average bond distances of Ni–N and Ni–O for Ni2 and Ni3 are 2.1147, 2.1144, 2.0357 and 2.0209 Å, which is shorter than the distances of Ni1 atoms. This difference may be attributed to the difference in stereochemistry between the central and terminal Ni atoms. The neighboring Ni–Ni interatomic distances are 4.764 and 4.780 Å, respectively, which are longer than those in related complexes [8, 9].

Figure 1: 
The crystral structure of complex 1.
Figure 1:

The crystral structure of complex 1.


Corresponding author: Yang Liguo, College of Chemistry and Environmental Engineering, Anyang Institute of Technology, Anyang 455000, Henan, P. R. China, E-mail:

Funding source: Nature Science Foundation of Henan Province http://dx.doi.org/10.13039/501100003172

Award Identifier / Grant number: 202300410010

Funding source: Anyang Institute of Technology http://dx.doi.org/10.13039/501100008528

Award Identifier / Grant number: YPY2020025

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

  2. Research funding: This study was supported by the Nature Science Foundation of Henan Province (202300410010), and the foundation of Anyang Institute of Technology (YPY2020025).

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

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Received: 2022-01-16
Accepted: 2022-04-05
Published Online: 2022-04-25
Published in Print: 2022-08-26

© 2022 Wang Xin et al., published by De Gruyter, Berlin/Boston

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

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  41. The crystal structure of (2,2′-bipyridine-κ2N,N′)- bis(6-phenylpyridine-2-carboxylate-κ2N,O)manganese(II)] monohydrate, C34H26N4O5Mn
  42. Crystal structure of the cocrystal 1,3,5,7-tetranitro-1,3,5,7-tetrazoctane ─ 2,3-dihydroindole (1/1), C12H17N9O8
  43. Crystal structure of 3-acetyl-6-hydroxy-2H-chromen-2-one monohydrate, C11H10O5
  44. Crystal structure of 6,9-diamino-2-ethoxyacridinium 3,5-dinitrobenozate — dimethylsulfoxide — water (1/1/1), C24H27N5O9S
  45. The crystal structure of 4,4′-bipyridinium bis-(2-hydroxy-3-methoxybenzoate), 2(C8H7.68O4)·C10H8.64N2
  46. Crystal structure of (Z)-4-(((4-fluorophenyl)amino)(furan-2-yl)methylene)-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one
  47. The crystal structure of bis(4-chloro-2-(((2-chloroethyl)imino)methyl)phenolato-κ2N,O)-oxidovanadium(IV), C18H16Cl4N2O3V
  48. The crystal structure of 17-(bromoethynyl)-17-hydroxy-10, 13-dimethyl- 1,2,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-3H-cyclopenta[a]phenanthren-3-one, C21H27BrO2
  49. The crystal structure of 4-((6-fluoropyridin-2-yloxy)methyl)benzonitrile, C13H9FN2O
  50. Crystal structure of (Z)-2-(1-bromo-2-phenylvinyl)-5-ethyl-2-methyl-1,3-dioxane-5-carboxylic acid, C15H17Br1O4
  51. Crystal structure of catena-poly[tribenzyl-κ1C-(μ2-6-oxidopyridin-1-ium-3-carboxylato-κ2O:O’)tin(IV)-dichloromethane-methanol (1/1/1), C29H31Cl2NO4Sn
  52. Crystal structure of bis{2-(tert-butyl)-6-((E)-((4-((E)-1-(methoxyimino)ethyl)phenyl)imino)methyl)phenolato-κ2N,O}zinc(II), C40H46N4O4Zn
  53. Crystal structure of diaqua-bis(μ2-2-carboxy-3,4,5,6-tetrafluorobenzoato-κ2O:O′)-bis(phenanthroline-κ2N,N′)-bis(μ2-3,4,5,6-tetrafluorophthalato-κ3O:O,O′)dieuropium(III) – phenanthroline (1/2), C40H19EuF8N4O9
  54. The crystal structure of diaqua-bis(6-phenylpyridine-2-carboxylato-κ2N,O) manganese(II) — water — dimethylformamide (1/2/1), C27H31N3O9Mn
  55. The crystal structure of bis(pyrazolo[1,5-a]pyrimidine-3-carboxylato-κ2N,O)-copper(ii), C14H8N6O4Cu
  56. Crystal structure of poly[(μ2-1-(1-imidazolyl)-4-(imidazol-1-ylmethyl)benzene-κ2N:N′)-(μ3-pyridazine-4,5-dicarboxylate-κ3O:O′:N)]copper(II) hydrate, C19H16CuN6O5
  57. Crystal structure of acrinidinium tetrafluorohydrogenphthalate, C21H11F4NO4
  58. Crystal structure of 2-(1H-pyrazol-3-yl-κN)pyridine-κN-bis(2-(2,4-difluorophenyl)pyridinato-κ2C,N)iridium(III) sesquihydrate, C30H18F4IrN5·1.5[H2O]
  59. Crystal structure of 2-(2-hydroxy-5-nitrophenyl)-5-methyl-1,3-dioxane-5-carboxylic acid, C12H13N1O7
  60. The crystal structure of 1,2-bis(pyridinium-4-yl)ethane diperchlorate, C12H14N2·2ClO4 – a second polymorph
  61. The crystal structure of [(1,10-phenantroline-κ2N,N′)-bis(6-phenylpyridine-2-carboxylato-κ2N,O)manganese(II)] monohydrate, C36H26N4O5Mn
  62. Crystal structure of 1,2-bis(2,2,3,3,5,5,5-heptamethyl-1,1,4,4- tetrakis(trimethylsilyl)pentasilan-1-yl)ditellane, C38H114Si18Te2
  63. Crystal structure of 1,2-bis(2,4-dinitro-1H-imidazol-1-yl)ethane – dimethylformamide (1/1), C11H13N9O9
  64. Crystal structure of (Z)-3-((tert-butylamino) methylene)-2-(2-hydroxynaphthalen-1-yl) chroman-4-one, C24H23NO3
  65. Synthesis and crystal structure of (E)-1-(4-(((E)-3-(tert-butyl)-2-hydroxybenzylidene)amino)phenyl)ethan-1-one O-ethyl oxime, C21H26N2O2
  66. Crystal structure of the double salt bis(5-amino-1,2,4-triazol-4-ium-3-yl)methane hydrogen oxalate hemioxalate, C8H11N8O6
  67. Hydrothermal synthesis and crystal structure of catena-poly[diaqua-bis(μ2-4-[(4-pyridinylmethyl)amino]benzoato-κ2N:O)cobalt(II)]–1,2bi(4-pyridyl)ethene–water (1/1/1), C50H50N8O8Co
  68. Crystal structure of 3-(3-bromophenyl)-1′,3′-dimethyl-2′H,3H,4H-spiro[furo[3, 2-c]chromene-2,5′-pyrimidine]-2′,4,4′,6′(1′H,3′H) tetraone, C22H15BrN2O6
  69. The crystal structure of poly[aqua-(μ2-4,4′- bis(imidazolyl)biphenyl-κ2N:N′)-(μ2-3-nitrobenzene-1,2-dicarboxylato-κ2O:O′)]copper (II) hydrate, C26H21N5O8Cu
  70. The crystal structure of bis(4-(6-carboxy-8-ethyl-3-fluoro-5-oxo-5,8-dihydro-1,8-naphthyridin-2- yl)piperazin-1-ium) adipate tetrahydrate, C36H52F2N8O14
  71. Synthesis and crystal structure of poly[aqua(μ4-(1R,2S,4R)-4-hydroxy-1-((7-hydroxy-3-(4-hydroxy-3-sulfonatophenyl)-4-oxo-4H-chromen-8-yl)methyl)pyrrolidin-1-ium-2-carboxylate-κ4O:O′:O″:O‴)sodium(I)] monohydrate, C21H22NNaO12S
  72. Crystal structure of chlorido-(η6-toluene)(2,2′-bipyridine-κ2N,N′)ruthenium(II) hexafluorophosphate, C17H16ClN2RuPF6
  73. The crystal structure of (R)-6-hydroxy-8-methoxy-3-methylisochroman-1-one, C11H12O4
  74. Crystal structure of catena-poly[(5,5,7,12,12,14-hexamethyl -1,4,8,11-tetraazacyclotetradecane- κ4N,N′,Nʺ,N‴)nickel(II)-(μ2-perchlorato-κ2O:O′)] 3,5-dicarboxybenzoate – methanol (1/2), C27H49ClN4NiO12
  75. The crystal structure of 4-(chloromethyl)benzonitrile, C8H6ClN
  76. The crystal structure of dimethylammonium 8-[(7,9-dioxo-6,10-dioxaspiro[4.5]decan-8-ylidene)methyl]-9-oxo-6,10-dioxaspiro[4.5]dec-7-en-7-olate, C19H25NO8
  77. Crystal structure of (2R,3S,4S,5R,6S)-2-(acetoxymethyl)-6-((1-acetyl-5-bromo-4-chloro-1H-indol-3-yl)oxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate hemihydrate C24H25BrClNO11
  78. The crystal structure of the co-crystal tetrakis[2-(tris(4-methoxyphenyl)stannyl)ethyl]silane – tetrahydrofuran – toluene – tetrahydrofurane (1/1/1), C103H116O13SiSn4
  79. Crystal structure of methyl 3-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)propanoate, C16H13NO4
  80. Crystal structure of ethyl (Z)-3-amino-2-cyano-3-(2-oxo-2H-chromen-3-yl)acrylate, C15H12N2O4
  81. Crystal structure of methyl 2-(1,3-dioxo-1H-benzo[de]isoquinolin-2(3H)-yl)acetate, C15H11NO4
  82. Crystal structure of catena-poly[diaqua-bis(μ2-1,3-di(1H-imidazol-1-yl)propane-κ2N:N′)cobalt(II)] tetrafluoroterephthalate, C26H28N8O6F4Co
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