Compounds of general formula Mo(g6-arene)(CO)3, arene¼diphenyl, 1; 1,3,5-triphenylbenzene, 2; C6H5F, 3; C6H5CF3, 4, have been prepared in good yields by reacting fac-Mo(CO)3(DMF)3, DMF¼N;N-dimethylformamide, with BF3 OEt2 and the appropriate arene. The crystal and molecular structures of 1, 3, and 4, are reported. The dinuclear derivative Mo2(g6:g6-C6H5- C6H5)(CO)6, 5, was obtained by thermal reaction of Mo(g6-toluene)(CO)3 with Mo(g6-diphenyl)(CO)3. An electrochemical study has been performed on the new complexes, showing that the dimolybdenum complex undergoes a single two-electron reduction at about the same potential as the corresponding dichromium complex, the molybdenum dianion being less stable than the chromium analogue.
Synthesis, electrochemistry, and crystal and molecular structures of some molybdenum(0) arene derivatives with fluorinated and phenyl-substituted arene ligands
CALDERAZZO, FAUSTO;PAMPALONI, GUIDO;
2004-01-01
Abstract
Compounds of general formula Mo(g6-arene)(CO)3, arene¼diphenyl, 1; 1,3,5-triphenylbenzene, 2; C6H5F, 3; C6H5CF3, 4, have been prepared in good yields by reacting fac-Mo(CO)3(DMF)3, DMF¼N;N-dimethylformamide, with BF3 OEt2 and the appropriate arene. The crystal and molecular structures of 1, 3, and 4, are reported. The dinuclear derivative Mo2(g6:g6-C6H5- C6H5)(CO)6, 5, was obtained by thermal reaction of Mo(g6-toluene)(CO)3 with Mo(g6-diphenyl)(CO)3. An electrochemical study has been performed on the new complexes, showing that the dimolybdenum complex undergoes a single two-electron reduction at about the same potential as the corresponding dichromium complex, the molybdenum dianion being less stable than the chromium analogue.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.