Bridged bi-aromatic ligands and olefin polymerization catalysts prepared therefrom

A catalyst composition comprising one or more transition metal compounds comprising a bridged bi-aromatic phenol ligand of formula (I);

• wherein each of R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11 and R12 is independently selected from the group consisting of hydride, halide, optionally substituted hydrocarbyl, heteroatom-containing optionally substituted hydrocarbyl, alkoxy, aryloxy, silyl, boryl, dialkyl amino, alkylthio, arylthio and seleno;
• optionally two or more R groups can combine together into ring structures with such ring structures having from 3 to 100 non-hydrogen atoms in the ring;
• A is an optionally substituted divalent alkyl, alkenyl, alkynyl, heteroalkyl, heteroalkenyl, heteroalkynyl, carbocycle, heterocarbocycle, aryl, heteroaryl, or silyl;
• Y and Y′ are independently selected from O, S, NRa and PRa wherein Ra is optionally substituted hydrocarbyl;
• Ar is, independently, optionally substituted aryl or optionally substituted heteroaryl;
• and
• one or more activators.