HOMOLEPTIC PHENYL ISOCYANIDE COMPLEXES OF MOLYBDENUM AND TUNGSTEN: ZEROVALENT SIX-COORDINATE VERSUS DIVALENT SEVEN-COORDINATE

Article abstract of DOI:10.1016/S0022-328X(00)82961-7

Electrochemical and chemical oxidations of Mo(CNPh)6 and W(CNPh)6 have been shown to yield seven-coordinate ²⁺.These cations, stabilized as their PF6^- salts, can be obtained in yields of 80percent.The redox and substitution chemistry of these new complexes have been explored.A convenient synthesis of W(CNPh)6 has been devised starting from W2(dmhp)4 (dmhp is the anion of 2,4-dimethyl-6-hydroxypyrimidine).