passages.id: split_7_validation_524_passage
passages.type: progene_text
passages.text: Isolable copper(I) complexes of the type [(BIT(OR,SMe ) ) Cu(CO)]PF6 ( 3a and 3b ) are produced in reactions of the respective tripodal ligands 1a ( R = H ) and 1b ( R = Me ) with [ Cu(CH3CN)4]PF6 in CH2Cl2 under CO ( 1 atm ) ; the pyramidal structure of 3a has been determined crystallographically .