Transition-metal complexes of pyrrole pigments. Part VII. Cobalt(II) and zinc(II) chelates of some tripyrrene-b and bilene-b ligands
- 1 January 1973
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 17,p. 1734-1737
- https://doi.org/10.1039/dt9730001734
Abstract
The cobalt(II) and zinc(II) chelates of 1′,6-diethoxycarbonyl-1,2,3,4,5,6′-hexamethyitripyrrene-b and 1,19-di-ethoxycarbonyl-2,3,7,8,12,13,17,18-octamethyl-1,19-dideoxybilene-b in a ligand to metal ratio of 2:1 were prepared and investigated by electronic, i.r., and n.m.r. spectroscopy. A co-ordination geometry close to a regular tetrahedron (D2 symmetry) around the metal atoms was assigned to these chelates.Keywords
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