The preparation of 1 : 1 phosphine: triarylboron complexes. The X-ray crystal structure of (C6F5)3B·PH3

Abstract
The tris(fluoroaryl) boron compounds B(C6F5)3 and B(C6H3F2-2,6)3 undergo reversible 1 : 1 adduct formation with phosphine (PH3); the X-ray crystal structure of (C6F5I3B·PH3)1 has been determined.