PENTAFLUOROPHENYLPLATINUM COMPLEXES CONTAINING ETA(1)-ARYL-PT OR ETA(2)-ARYL-PT INTERACTIONS - CRYSTAL-STRUCTURE OF CIS-[PT(C6F5)(2)-((NC5H4[CH(ETA(2)-PH)PH]-2)-KAPPA-N)]CENTER-DOT-0.5C(6)H(5)ME

The reaction of cis-[Pt(C6F5)(2)(thf)(2)] 1 (thf=tetrahydrofuran) with a 1:1 molar ratio of 2-(diphenylmethyl) pyridine or tribenzylamine in CH2Cl2 resulted in displacement of the thf molecules and formation of cis-[Pt(C6F5)(2){NC5H4(CHPh(2))-2}] 2 and cis-[Pt(C6F5)(2){N(CH(2)Ph)(3)}] 3 respectively. The solid-state structure of 2 has been established by X-ray diffraction methods and reveals the existence of a eta(2)-phenyl-Pt interaction which is maintained in solution (NMR). Crystal data for 2.0.5C(6)H(5)Me: C33.5H19F10NPt, triclinic, space group P ($) over bar 1, a=11.653(4), b=12.345(3), c=12.499(4) Angstrom, alpha=1:16.91(2), beta=104.33(2). gamma=103.41(2)degrees. Z=2, R=0.038 for 2791 unique 'observed' absorption-corrected reflections collected at 233 K. Complexes 2 and 3 reacted with CO yielding cis-[Pt(C6F5)(2){NC5H4(CHPh(2))-2}(CO)] and cis-[Pt(C6F5)(2){N (CH(2)Ph)(3)}(CO)] respectively.