Synthesis and Nonlinear Optical Properties of n 5 -Monocyclopentadienyliron(II) Acetylide Derivatives. X-ray Crystal Structures of [Fe(η 5 -C 5 H 5 )(DPPE)( p -C C 6 H 4 NO 2 )] and [Fe(n 5 -C 5 H 5 )(DPPE){ E - p -C≡CC 6 H<sub4 C(H)=C(H)C 6 H 4 NO 2 }]

Abstract

A series of new acetylide complexes of the type [Fe(η5-C5H5)(P down curve sign P)(p-C≡CC6H4R)] (P down curve sign P = DPPE (=l,2-bis(diphenylphosphino)ethane), (P)-PROPHOS (=R)-(+)-l,2-bis(diphenylphosphino)propane), R = NO2, C6H4NO2, (Z)-C(H)=C(H)C6H4