Patent ID: 7956207
Filing Date: 2011-06-07
Classification: C07F

Abstract:
1. A heteroleptic organometallic compound represented by the formula (L 1 ) x M(L 2 ) y wherein M is a metal or metalloid, L 1 and L 2 are different and are selected from hydrogen, a substituted or unsubstituted, saturated or unsaturated, aliphatic hydrocarbon, aromatic hydrocarbon, cycloaliphatic hydrocarbon, aliphatic heteroatom-containing group, aromatic heterocycle, cycloaliphatic heterocycle, or mixtures thereof; x is a value of at least 1; y is a value of at least 1; x + y is equal to the oxidation state of M; and wherein (i) L 1 has a steric bulk sufficiently large such that, due to steric hinderance, x cannot be a value equal to the oxidation state of M, (ii) L 2 has a steric bulk sufficiently small such that, due to lack of steric hinderance, y can be a value equal to the oxidation state of M only in the event that x is not a value of at least 1, and (iii) L 1 and L 2 have a steric bulk sufficient to maintain a heteroleptic structure in which x + y is equal to the oxidation state of M; wherein said heteroleptic organometallic compound is a liquid at 20° C.