Multiple bonds between main group elements and transition metals. 95. Synthesis and reactivity of TcCl(CO)3[P(C6H5)3]2: Novel technetium complexes of 1, 4, 7-triazacyclononane and hydridotris(pyrazolyl)borate

摘要: trans-TcCl(CO){sub 3}(P(C{sub 6}H{sub 5}){sub 3}){sub 2} (2) is accessible in 95% yield by treatment of the easily available Tc(V) ionic precursor (TcOCl{sub 4}){sup {minus}} (1) with triphenylphosphine an atmosphere carbon monoxide (1 atm). 2 recognized as a useful starting material for subsequent substitution reactions, especially tridentate nitrogen ligands. Thus, compounds ((C{sub 15}N{sub 3})Tc(CO){sub 2}(P(C{sub 3}))Cl (5) and (HB(C{sub 3}H{sub 3}N{sub 2}){sub 3}Tc(CO){sub 3})) (6) were synthesized good yields. The structures 2, 5, 6 determined single-crystal X-ray diffraction techniques. crystallizes triclinic space group. Compound 5 monoclinic group P2{sub 1}/c (No. 14) = 12.997 {angstrom}, b 8.680 c 25.189.