A comparative study of the high- and low-spin complexes of Ni(II) with two tetraaza dibenzo-substituted macrocycles incorporating 14-membered inner rings has been carried out. The results obtained are also compared with those for the analogous nickel(II) derivatives of 1,4,8,11-tetraazacyclotetradecane. Four X-ray structures of nickel complexes as well as the structure of one free ligand have been determined. These structures taken together with previous X-ray structural data and selected molecular mechanics calculations have enabled a detailed assessment of the effects of spin state and ligand substituent on the hole size and ring conformations adopted by individual complexes. A comparative electrochemical investigation of individual high- and low-spin complexes in the series has been performed.
MACROCYCLIC LIGAND RING SIZE EFFECTS .2. SYNTHETIC, STRUCTURAL AND ELECTROCHEMICAL STUDIES OF THE INTERACTION OF NI-2 WITH 14-MEMBERED TETRAAZA MACROCYCLES CONTAINING FUSED DIBENZO SUBSTITUENTS / K. ADAM, M. ANTOLOVICH, L. BRIGDEN, A. LEONG, L. LINDOY, P. BAILLIE, D. UPPAL, M. MCPARTLIN, B. SHAH, D.M. PROSERPIO, L. FABBRIZZI, P. TASKER. - In: JOURNAL OF THE CHEMICAL SOCIETY DALTON TRANSACTIONS. - ISSN 0300-9246. - :10(1991), pp. 2493-2501.
Titolo: | MACROCYCLIC LIGAND RING SIZE EFFECTS .2. SYNTHETIC, STRUCTURAL AND ELECTROCHEMICAL STUDIES OF THE INTERACTION OF NI-2 WITH 14-MEMBERED TETRAAZA MACROCYCLES CONTAINING FUSED DIBENZO SUBSTITUENTS |
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Settore Scientifico Disciplinare: | Settore CHIM/03 - Chimica Generale e Inorganica |
Data di pubblicazione: | 1991 |
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Tipologia: | Article (author) |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1039/dt9910002493 |
Appare nelle tipologie: | 01 - Articolo su periodico |