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Diaqua-bis(4-methyl-amino-benzoato-?O)bis-(nicotinamide-?N)cobalt(II).

ABSTRACT: The asymmetric unit of the title Co(II) complex, [Co(C(8)H(8)NO(2))(2)(C(6)H(6)N(2)O)(2)(H(2)O)(2)], contains two half complex mol-ecules with similar structures. The Co(II) atoms are each located on an inversion center and each is coordinated by two 4-methyl-amino-benzoate (PMAB), two nicotinamide (NA) ligands and two water mol-ecules in a distorted octa-hedral coordination. The dihedral angles between the carboxyl-ate groups and the adjacent benzene rings are 3.0?(3) and 2.54?(19)°, while the pyridine and benzene rings are oriented at dihedral angles of 67.40?(8) and 66.25?(8)°. In the crystal structure, inter-molecular O-H?O and N-H?O hydrogen bonds link the mol-ecules into a supra-molecular structure.

SUBMITTER: Necefoglu H

PROVIDER: S-EPMC2984056 | biostudies-literature | 2010 Mar

REPOSITORIES: biostudies-literature

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Diaqua-bis(4-methyl-amino-benzoato-κO)bis-(nicotinamide-κN)cobalt(II).

Necefoğlu Hacali H Aybirdi Ozgür O Tercan Barış B Ermiş Emel E Hökelek Tuncer T

Acta crystallographica. Section E, Structure reports online 20100327 Pt 4

The asymmetric unit of the title Co(II) complex, [Co(C(8)H(8)NO(2))(2)(C(6)H(6)N(2)O)(2)(H(2)O)(2)], contains two half complex mol-ecules with similar structures. The Co(II) atoms are each located on an inversion center and each is coordinated by two 4-methyl-amino-benzoate (PMAB), two nicotinamide (NA) ligands and two water mol-ecules in a distorted octa-hedral coordination. The dihedral angles between the carboxyl-ate groups and the adjacent benzene rings are 3.0 (3) and 2.54 (19)°, while the ...[more]

PMID: 21580537

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Diaqua-bis(4-methyl-amino-benzoato-κO)bis-(nicotinamide-κN)nickel(II).

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Project description:In the crystal structure of the title Co(II) complex, [Co(C(8)H(5)O(3))(2)(C(10)H(14)N(2)O)(2)(H(2)O)(2)], the metal centre is located on an inversion center and is coordinated by two 4-formyl-benzoate (FOB), two diethyl-nicotinamide (DENA) ligands and two water mol-ecules in a slightly distorted CoO(4)N(2) octa-hedral geometry. In the crystal structure, O-H⋯O hydrogen bonds link the mol-ecules into infinite chains. π-π contacts between the parallel pyridine rings of neighboring DENA ligands [centroid-centroid distance = 3.652 (3) Å] further stabilize the crystal structure.

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Bis[4-(methyl-amino)benzoato-κO]bis-(nicotinamide-κN)zinc(II).

Project description:The title zinc complex, [Zn(C(8)H(8)NO(2))(2)(C(6)H(6)N(2)O)(2)], is composed of two monodentate 4-(methyl-amino)benzoate and two monodentate nicotinamide ligands. The coordination around the Zn atom is distorted tetra-hedral. The dihedral angles between the two benzene rings and the two pyridine rings are 78.30 (6) and 68.86 (5)°. In the crystal structure, inter-molecular N-H⋯O hydrogen bonds link the mol-ecules into an infinite three-dimensional network.

| S-EPMC2968013 | biostudies-literature

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