Patent ID: 7074308

Claim:
A complex having the formula: wherein M is osmium; L 1 has the formula: wherein R 7 is a substituted or unsubstituted aryl or a substituted or unsubstituted C1â€“C12 alkyl; R 8 is â€”H or a Cl alkyl; and a combination of R 9 and R 10 forms a fused, saturated or unsaturated, 5- or 6-membered ring; L 2 is a halide; L and Lâ€² are independently: wherein Râ€² 1 is a substituted or unsubstituted C1â€“C6 alkyl; Râ€² 3 and Râ€² 4 are independently â€”H; and R a , R b , R c , and R d are independently â€”H or Cl alkyl; c is a +1 or +2 charge; X is an anion; and d is a number of X sufficient to balance the charge c.