Syntheses of 1,2-diamidobenzene complexes of molybdenum. Crystal structure of the complex cis-dicarbonyl 1,2-diamidobenzenebis(triphenylphosphine)molybdenum [Mo{(NH) 2C 6H 4}(CO) 2(PPh 3) 2

Abstract

The complex [Mo(dib)(CO) 2(PPh 3)2] (1) [dib = 1,2-(NH) 2C 6H 4] is obtained from [MoBr 2(CO) 2(PPh 3) 2], 1,2-(NH 2) 2C 6H 4 and KOH dissolved in a mixture of tetrahydrofuran and water; its X-ray structure and properties are described. Substitution derivatives of this complex are obtained by reaction of 1 with P donors to give [Mo(dib)CO) 2L 2] (L  PEt 3 ( 2), P(OEt) 3 ( 3)] and [Mo(dib(CO) 2(dppe)] ( 4) [deppe = Ph 2P(CH 2)PPh 2], and their spectroscopic properties are reported. Attempted reactions of 1 with CO or dppm [dppm = Ph 2PCH 2PPh 2] were unsuccessful and the starting complex was recovered unchanged.