Heterotridentate Organomonophosphines in Pt(?(3)-(PCC2)-C-1-C-1)(Y) and Pt(?(3)-(PCN1)-C-1-N-1)(Y) Derivatives-Structural Aspects

This paper covers Pt(II) complexes of the compositions Pt(?(3)-(PCC2)-C-1-C-1)(Y) (Y = NL or I) and Pt(?(3)-(PCN1)-C-1-N-1)(Y), Y = OL, NL, CL, Cl or Br). These complexes crystallized in four crystal classes: monoclinic (9 examples), triclinic (3 examples), orthorhombic (3 examples), and tetragonal (2 examples). The structural parameters (Pt-L, L-Pt-L) are analyzed and discussed with attention to the distortion of square-planar geometry about the Pt(II) atoms and trans-influence. These data are compared and discussed with those of Pt(?(3)-(PNN2)-N-1-N-1)(Y), Pt(?(3)-(PNX1)-N-1-X-1)(Y), (X-1=O-1, C-1, S-1, Se-1), Pt(?(3)-(NPN2)-P-1-N-1)(Cl), Pt(?(3)-(SPS2)-P-1-S-1)(Cl), Pt(?(3)-(PSCl1)-S-1-Cl-1)(Cl), and Pt(?(3)-(PSiN1)-Si-1-N-1)(OL) types. Each heterotridentate ligand creates two metallocyclic rings with a common central ligating atom. These ?(3)-ligands form twenty-three types of metallocycles and differ by the number and type of the atoms involved in the metallocyclic rings.