Synthesis, characterization and crystal structure of cis,mer-[ReH(CO)2{PPh(OMe)2}3

Abstract

The dicarbonylhydride complex cis , mer- [ReH(CO) 2 {PPh(OMe) 2 } 3 ] was serendipitously obtained when, in an attempt to replace a CO ligand by the phosphonite ligand PPh(OMe) 2 in [ReH(CO) 3 (PPh 2 OCH 2 CH 2 OPPh 2 )], this complex was treated with PPh(OMe) 2 under UV irradiation. The dicarbonylhydride complex cis , mer- [ReH(CO) 2 {PPh(OMe) 2 } 3 ] ( 1 ) was serendipitously obtained when, in an attempt to replace a CO ligand by the phosphonite ligand PPh(OMe) 2 in [ReH(CO) 3 (L)] (L = PPh 2 OCH 2 CH 2 OPPh 2 ), this complex was treated with PPh(OMe) 2 under UV irradiation. The complex 1 was characterized by IR, 1 H and 31 P{ 1 H} NMR spectroscopy and by crystal structure determination. The spectroscopic features are consequent with the cis , mer configuration showed by the X-ray crystallographic analysis of the complex. The environment of the metal centre is a distorted octahedron.