original_query: What is the significance of the transition-metal complex synthesized by Philip P. Power in 1983?
query: What is the significance of the transition-metal complex containing a P=P double bond synthesized by Philip P. Power in 1983?
answer: Philip P. Power's 1983 synthesis of a transition-metal complex containing an unbridged P=P double bond was significant because it was the first complex of its kind.