Lacunar cyclidene complexes of nickel(II) and cobalt(II) containing a misoriented pendant base: synthesis and characterization of a new T-form hemoglobin model

Autor:	Nathaniel W. Alcock, Naohide Matsumoto, Peter A. Padolik, Harrell E. Tweedy, Daryle H. Busch, Neil A. Stephenson
Rok vydání:	1990
Předmět:	chemistry.chemical_classification Steric effects Bicyclic molecule Stereochemistry Ligand Chemistry Iodide chemistry.chemical_element Crystal structure Inorganic Chemistry Crystallography Nickel chemistry.chemical_compound Pyridine Physical and Theoretical Chemistry Cobalt
Zdroj:	Inorganic Chemistry. 29:616-626
ISSN:	1520-510X 0020-1669
DOI:	10.1021/ic00329a014
Popis:	A new model for the T-form of hemoglobin has been developed; it consists of a cobalt(II) complex with a pentadentate ligand in which the binding of the axial ligand is inhibited by a steric device. The compounds reported here are isomeric lacunar cyclidene complexes containing a pyridyl group covalently attached to the macrocycle. One isomer possesses a stereochemistry suitable for the intramolecular coordination of the pyridine nitrogen, as demonstrated by ESR experiments on the cobalt(II) complex. A crystal structure is reported for one of the isomers: (hexamethyl-23-[2-(1-methylpyridiniumyl)] hexaazabicyclo[10.7.7]hexacosahexaene-k 4 N) nickel(II) iodide, C 32 H 5 I 3 NiH 2 O, orthorhombic, Pna2 1
Databáze:	OpenAIRE
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