A redetermination of bis(5,5′-diethylbarbiturato)bis(imidazole)cobalt(II)
نویسندگان
چکیده
The title complex, [Co(C(8)H(12)N(2)O(3))(2)(C(3)H(4)N(2))(2)], whose structure was first determined by Wang & Craven [(1971). J. Chem. Soc. D, pp. 290-291], has been redetermined with improved precision. A crystallographic twofold rotation axis passes through the Co atom, which is tetrahedrally coordinated by two N atoms from two barbital ligands and two N atoms from two imidazole ligands. The mol-ecules are self-assembled via inter-molecular N-H⋯O hydrogen-bonding inter-actions into a supra-molecular network.
منابع مشابه
Diaqua[5,5′-dicarboxy-2,2′-(ethane-1,2-diyl)bis(1H-imidazole-4-carboxylato)]cobalt(II)
In the title complex, [Co(C(12)H(8)N(4)O(8))(H(2)O)(2)], the Co(II) atom is coordinated by two N and two O atoms of the tetra-dentate 5,5'-dicarb-oxy-2,2'-(ethane-1,2-di-yl)bis-(1H-imidazole-4-carboxy-l-ate) anion. The slightly distorted octa-hedral coordination environment is completed by the O atoms of two water mol-ecules in axial positions. An intra-molecular O-H⋯O hydrogen bond between the...
متن کاملBis(2,4-dioxo-5,5-diphenylimidazolidinido-κN 3)bis(propane-1,3-diamine-κ2 N,N′)cobalt(II)
The complex mol-ecule of the title compound, [Co(C(15)H(11)N(2)O(2))(2)(C(3)H(10)N(2))(2)], has crystallographically imposed inversion symmetry. The Co(II) atom displays a distorted octa-hedral coordination geometry. In the phenytoin anion, the two phenyl rings form dihedral angles of 62.26 (8) and 57.47 (9)° with the central imidazole ring. Intra-molecular N-H⋯O and C-H⋯O hydrogen bonds occur....
متن کامل(4,5-Diazafluoren-9-one-κ2 N,N′)bis(1H-imidazole-κN 3)bis(thiocyanato-κN)cobalt(II)
In the title complex, [Co(NCS)(2)(C(3)H(4)N(2))(2)(C(11)H(6)N(2)O)], the Co(II) atom has a distorted octa-hedral coordination with the N atoms of the 4,5-diaza-fluoren-9-one ligand and two N atoms from imidazole ligands in the equatorial positions and the axial sites occupied by two N atoms of the thio-cyanate ligand. Inter-molecular N-H⋯O hydrogen bonding forms a one-dimensional motif parallel...
متن کاملCrystal structure of catena-poly[bis(formato-κO)bis[μ2-1,1′-(1,4-phenylene)bis(1H-imidazole)-κ2 N 3:N 3′]cobalt(II)]
A red block-shaped crystal of the title compound, [Co(HCOO)2(C12H10N4)2] n , was obtained by the reaction of cobalt(II) nitrate hexa-hydrate, formic acid and 1,1'-(1,4-phenyl-ene)bis-(1H-imidazole) (bib) mol-ecules. The asymmetric unit consists of one Co(II) cation, one formate ligand and two halves of a bib ligand. The central Co(II) cation, located on an inversion centre, is coordinated by tw...
متن کاملHexakis(1H-imidazole-κN 3)cobalt(II) triaquatris(1H-imidazole-κN 3)cobalt(II) bis(naphthalene-1,4-dicarboxylate)
The asymmetric unit of the title compound, [Co(C(3)H(4)N(2))(6)][Co(C(3)H(4)N(2))(3)(H(2)O)(3)](C(12)H(6)O(4))(2), contains two halves of crystallographically independent Co(II) complex cations, each assuming a distorted octa-hedral geometry, and one uncoordinated naphthalene-1,4-dicarboxyl-ate dianion. One Co(II) cation is located on an inversion center and is coordinated by six imidazole mol-...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 64 شماره
صفحات -
تاریخ انتشار 2008