Showing papers by "Richard D. Adams published in 1978"

Positively charged ligands. The coordination behavior of sulfonium cations

Abstract: It in shown that alkylation of the metal sulfide complexes ({itn}; 5 -C 5 H 5 )Mn(CO) 2 SRR′ ; RR′CH 3 ; RCH 3 , R′C 6 H 5 ; (η 5 -CH 3 C 5 H 4 )Mn(CO) 2 S(CH 3 ) 2 and (η 6 -C 6 H 6 )Cr(CO) 2 S(CH 3 ) 2 ; occurs at the sulfur atom and results in the formation of coordinated sulfonium cations. Spectroscopic studies show that this new ligand is strongly electron withdrawing. The coordinated sulfonium cation can be readily displaced from the metal atom by neutral ligands, however, anions cause dealkylation and formation of the original metal sulfide complexes.

Isocyanide insertion reactions. The role of isocyanide insertions in the metal assisted hydrogenation of isocyanides

Abstract: H/sub 2/Os/sub 3/(CO)/sub 10/ was reacted with phenyl isocyanide to form H/sub 2/Os/sub 3/(CO)/sub 10/(CNC/sub 6/H/sub 5/), which upon refluxing loses 1 mol CO to form a new complex that is believed to be a possible intermediate in the phenyl isocyanide reduction process. The molecular structure of the last complex was determined. (DLC)