Patent ID: 6333423
Filing Date: 2001-12-25
Classification: C07F,C08F

Abstract:
A compound having a general structure selected from the group consisting of: ##STR13##wherein:a solid line represents a covalent bond;a dashed line represents a bond having a varying degree of covalency and a varying degree of coordination;M is a metal atom covalently bonded to each O atom and bonded with varying degrees of covalency and coordination to said N atom;X.sup.1 and X.sup.2 are each a univalent anionic ligand covalently bonded to said metal atom;X.sup.3 is a single divalent anionic ligand covalently bonded to said metal atom;R.sup.1 through R.sup.4 are each a univalent radical covalently bonded to first (C.sub.6) aromatic group;R.sup.5 through R.sup.8 are each a univalent radical covalently bonded to second (C.sub.6) aromatic group; and(R.sub.n Y--T)is an optional group selected from the group consisting of a non-donor group covalently bonded to said N atom, wherein said non-donor group, T is a covalent bridging group between said N atom and Y, said Y is a group covalently bonded to said T, and, each of at least one R.sub.n is selected from the group consisting of a saturated substituent covalently bonded to said Y, an unsaturated substituent covalently bonded to said Y, and a univalent radical covalently bonded to said Y, and a donor group covalently bonded to said N atom, wherein said donor group, T is a covalent bridging group between said N atom and Y, said Y is a heteroatom covalently bonded to said T and bonded with varying degrees of covalency and coordination to said metal atom, and, optional R.sub.n substituents are selected from the group consisting of at least one saturated substituent covalently bonded to said Y, and at least one unsaturated substituent covalently bonded to said Y.