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Photolysis of [(CpMo(CO)3]2 with InR3 (R = ethyl, t-butyl, neopentyl) or ZnR2 (R = ethyl) efficiently forms CpMo(CO)3InR2 or [(CpMo(CO)3]2Zn as major products. The reaction is believed to proceed by bimolecular radical substitution and demonstrates substantial strenght for the MoIn bond. As a consequence of this bond strenght, [CpMo(CO)3]2 reacts photochemically and reversibly with indium metal to form [CpMo(CO)3]3In.

cis-(Dimethyl)(tri-p-tolylphosphine)(ligand)platinum(II) complexes (ligand  substituted pyridine or amine) have been prepared from PtMe2(1,5-COD) (COD  cyclooctadiene), Ptol3 (tol  tolyl) and the N-donor ligand. For ligand  4-(5-phenyl-2-oxazolyl)pyridine the crystal and molecular structure has been determined: space group R3−, a  b  34.295(5), c  14.198(2) A (− 100°C), γ 120°, V 14459 A3, Z  18. For 379 variables and 4977 reflections with I > 2σ(I) R  0.034, Rw  0.042. PtC bond lengths are 2.082(7) (rans to P) and 2.059(8) A (trans to N). Amine ligands are displaced by ethylene to form an unstable ethylene adduct.

The reduction of RhCl 3 - 3 H 2 O by sodium amalgam in THF solution under an atmosphere of N 2 and in the presence of an excess of a phosphine ligand has resulted in the formation of the hydridodinitrogen complexes RhH(N 2 )-(PPh(t-Bu) 2 ) 2 (I), RhH(N 2 )(P(t-Bu) 3 ) 2 (II), and [RhH(P(cyclo-C 6 H 11 ) 3 ) 2 ] 2 (μ-N 2 )(V), and a hydridotrisphosphine complex RhH(P(i-Pr) 3 ) 3 (X). The dinitrogen coordination is stable in I but N 2 is readily lost from other dinitrogen complexes, permitting the isolation of three-coordinate hydridobisphosphine rhodium(I) complexes RhH(P(t-Bu) 3 ) 2 (VII) and RhH(P(cyclo-C 6 H 11 ) 3 ) 2 (VIII). Trihydrido complexes RhH 3 L 2 (L = PPh(t-Bu) 2 (XI), P(t-Bu) 3 (XII), P(cyclo-C 6 H 11 ) 2 (XIII), and P(i-Pr) 3 (XIV)) have been synthesized by the reaction of the above rhodium (I) compounds with H 2 . By treatment of the corresponding trihydrido complexes with N 2 we have been able to obtain RhH(N 2 )-(P(cyclo-C 6 H 11 ) 3 ) 2 (III) and RhH(N 2 )(P(i-Pr) 3 ) 2 (IV). Loss of N 2 from IV results in the formation of [RhH(P(i-Pr) 3 ) 2 ] 2 (μ-N 2 ) (VI) and RhH(P(i-Pr) 3 ) 2 (IX). The crystal and molecular structure of [RhH(P(i-Pr) 3 ) 2 ] 2 (μ-N 2 ) (VI) has been determined at —85°C. The compound crystallizes in the triclinic space group C P 1 with two molecules in a cell dimensions a 12.703(16), b 16.455(16), c 11.389(8) A, α 90.25(9), β 103.87(3), γ 97.58(3)°, V 2289 A 3 . The final conventional and weighted agreement indices on F o for F o 2 τ3σ( F o 2 ) are 0.051 and 0.060, respectively. The dinitrogen ligand of VI linearly bridges two planar RhHP 2 fragments with NN separation of 1.134(5) A and an average RhN bond distance of 1.977(6) A. The dihedral angle between the two RhHP 2 fragments is 55.2°. Overall, the dimeric complex effectively has D 2 (222) symmetry.