Pulled molecular strings and stacked molecular decks: Chelate-ring formation vs. metal-metal bridging in dicopper(I) complexes of 2,2'-bipyrimidine with diphosphine ligands of variable polymethylene chain length. Chemistry - A European Journal, (2)4:446--451, 1996. [PUMA: assembly;crystal bipyrimidine chain copper dinuclear dinuclear;ESR dinuclear;copper dinuclear;deck dinuclear;electrochem dinuclear;string diphosphine length mol redn reduced self structure]