Synthesis and structure of [Na(15-crown-5)][Ph2P(S)OB(C6F5)3] and [Na(15-crown-5)2][Ph2P(S)O···HO(S)PPh2]

Abstract

The reaction of Ph2P(S)ONa with B(C6F5)3 in the presence of the crown ether 15-crown-5 provided the borate complex [Na(15-crown-5)][Ph2P(S)OB(C6F5)3] (1). In one occasion a few crystals of the hydrogen-bonded complex [Na(15-crown-5)2][Ph2P(S)O···HO(S)PPh2] (2) were obtained, which formed upon the accidental hydrolysis of 1. More rationally, 2 was prepared by the reaction of Ph2P(S)OH, Ph2P(S)ONa and 15-crown-5. The molecular structures of 1 and 2 were investigated by X-ray crystallography.

Keywords

• boron
• hydrogen bonding
• lewis acid
• phosphinate