SYNTHESIS AND STRUCTURE OF , A PLATINUM(II) COMPLEX CONTAINING THE NEW LIGAND (DI-t-BUTYL)CYCLOBUTYLMETHYLPHOSPHINE

Article abstract of DOI:10.1016/0022-328X(87)80234-6

The synthesis and spectral properties of trans-dichlorobis((di-t-butyl)cyclobutylmethylphosphine)platinum(II), <*>, and of the new phosphine (di-t-butyl)cyclobutylmethylphosphine, <*>, are described.The crystal structure of the Pt complex has been determined.The material crystallizes in the monoclinic system, space group C⁵_2h-P2₁/c, with two formula units in a cell of dimensions a 8.521(2), b 12.774(1), c 14.374(2) Angstroem, β 104.71(2) deg.A total of 5667 unique reflections were measured on a CAD4 diffractometer at 113 K.The final value of R(F) is 0.028 for those 4223 reflections having F_o² > 3?(F²).The crystal structure consists of the packing of discrete neutral molecules of <*>.A crystallographic center of symmetry is imposed on each molecule.Important intramolecular distances include Pt-P, 2.353(1) and Pt-Cl, 2.306(1) Angstroem.The shortest non-bonding distance between the Cl atom and a carbon atom of a t-Bu group is Cl...C(4), 3.387(3) Angstroem.No interaction between the Pt atom and the cyclobutane ring is observed.The absence of extreme steric congestion in the complex may explain the lack of such an interaction.