REACTION OF INDIUM METAL WITH R3PI2 (R=PH, PR-I, PR-N) - STRUCTURAL CHARACTERIZATION OF THE NOVEL SUBVALENT INDIUM(II) COMPLEX IN2I4(PPR3N)(2) WHICH CONTAINS AN IN-IN BOND, THE 4-COORDINATE AND 5-COORDINATE INDIUM(III) COMPLEX INI3(PPH3)(2)CENTER-DOT-INI3(PPH3), AND THE TETRAHEDRAL INDIUM(III) COMPLEX INI3(PPR3I)

Reaction of R3PI2 (R = Ph, Pm, Pr-i) with indium metal powder produces a variety of novel indium metal complexes: where R = Ph, the four- an d five-coordinate metal(III) complex InI3(PPh3)(2) . InI3(PPh3) result s; where R = Pr-n, the 'subvalent' indium(II) complex In2I4(PPr3n)2 is formed, the first example of an indium tertiary phosphine complex con taining an indium-indium bond; whereas for R = Pr-i, the monomeric tet rahedral indium(III) complex InI3(PPr3i) results; these complexes illu strate the subtle effect of the organic substituents on the phosphorus atom for the reaction of R3PI2 with indium metal powder and the novel indium complexes which are available.