EXTENDED X-RAY-ABSORPTION FINE-STRUCTURE STUDIES ON CHLORO(PHTHALOCYANINATO)COBALT(III) AND CHLORO(PYRIDINE)(PHTHALOCYANINATO)COBALT(III)

Authors
ENDREGARD M NICHOLSON DG ABRAHAM RJ MARSDEN I BEAGLEY B
Citation
M. Endregard et al., EXTENDED X-RAY-ABSORPTION FINE-STRUCTURE STUDIES ON CHLORO(PHTHALOCYANINATO)COBALT(III) AND CHLORO(PYRIDINE)(PHTHALOCYANINATO)COBALT(III), Acta chemica Scandinavica, 48(8), 1994, pp. 640-645
Citations number
28
Categorie Soggetti
Chemistry,Biology
Journal title
Acta chemica Scandinavica → ACNP
ISSN journal
0904213X
Volume
48
Issue
8
Year of publication
1994
Pages
640 - 645
Database
ISI
SICI code
0904-213X(1994)48:8<640:EXFSOC>2.0.ZU;2-H
Abstract
The local coordination about the cobalt atom in chloro(phthalocyaninat o)cobalt(III) (PcCoCl) and chloro(pyridine)(phthalocyaninato)cobalt(II I) (PyrPcCoCl) has been determined by EXAFS spectroscopy. The cobalt a tom in PcCoCl is coordinated to four nitrogen atoms at 1.91(1) angstro m and one chlorine at 2.24(1) The Co-Cl bond length in PyrPcCoCl is 2. 20(1) angstrom, and the composite Co-N bond length is 1.89(1) angstrom . The geometry obtained here allows the phthalocyanine ring current mo del to be tested. The calculated and observed ring current shifts of t he ligand protons are now in accord.