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Crystal and molecular structure of 6,13‐Di(ethoxycarbonyl)‐7,12‐dimethyl‐dibenzo [b.i.]‐1,4,8,11‐tetraaza[14]annulenato(2‐) nitrosocobaltat [C 26 H 26 O 5 N 5 Co] and the neutral ligand [C 26 H 28 O 4 N 4 ]
Author(s) -
Görls H.,
Reck G.,
Jäger E.G.,
Müller K.,
Seidel D.
Publication year - 1990
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.2170251111
Subject(s) - orthorhombic crystal system , crystal structure , crystallography , chemistry , benzene , ligand (biochemistry) , cobalt , x ray crystallography , stereochemistry , diffraction , physics , inorganic chemistry , biochemistry , receptor , organic chemistry , optics
Both title compounds crystallize in the orthorhombic space group Pnma with 4 formular units in the unit cell. The lattice parameters are: [C 26 H 26 O 5 N 5 Co], a = 8.589(4), b = 19.395(3), and c = 14.850(3) Å;[C 26 H 28 O 4 N 4 ], a = 8.413(7), b = 19.166(4), and c = 14.807(28) Å. The crystal structures have been determined by direct methods and refined by full‐matrix least square calculations. The ligands have a pronounced saddle‐shaped conformation in each structure because of interactions of the methyl groups with the benzene rings. The overall conformations of the neutral ligand and the cobalt complex are remarkably similar.