SYNTHESIS, CHARACTERIZATION, AND MOLECULAR-STRUCTURE OF A COMPOUND WITH A RING OF GROUP-13, GROUP-15, AND GROUP-16 ATOMS, (ME3CCH2)2INP(T-BU)2IN(CH2CME3)2SEPH

The compound (Me3CCH2)2InP(t-Bu)2In(CH2CMe3)2SePh has been prepared fr om equimolar quantities of [(Me3CCH2)2InP(t-Bu)2]2 and [(Me3CCH2)2InSe Ph]2 in pentane solution, recrystallized, and fully characterized. Thi s mixed-bridge organoindium species crystallized in the centrosymmetri c space group P1BAR (No. 2) with a = 10.069(2) angstrom, b = 11.627(4) angstrom, c = 18.452(4) angstrom, alpha = 100.74(2)-degrees, beta = 9 9.33(2)-degrees, gamma = 103.38(2)-degrees, V = 2016.9(8) angstrom3 an d Z = 2. The structure was solved and refined to R = 2.51 % and R(w) = 2.52% for those 3747 unique data with \F0\ > 6sigma, (\F0\) (R = 4.51 % for all 5304 data). The two indium atoms are bridged by both a di-t ert-butylphosphido ligand and a phenylselenido ligand. The four- membe red In2SeP core has a puckered arrangement such that the fold angle ab out the In...In axis is 20.9-degrees.