Darstellung und spektroskopische Charakterisierung von (η³-Hexahydro-closo-hexaborato)phenylquecksilber(1-) [Hg(η³-B₆H₆)Ph] sowie Kristallstruktur von [PPh₄][Hg(η³-B₆H₆)Ph] / Preparation and Spectroscopic Characterization of (η³-Hexahydro-closo-hexaborato)phenylmercury(1 -) [Hg(η³-B₆H₆)Ph]- and Crystal Structure of [PPh₄][Hg(η³-B₆H₆)Ph]

Abstract

By reaction of [B 6 H 7 ] - with PhHg(CH 3 COO) in dichloromethane [Hg(η 3 -B 6 H 6 )Ph] - is formed. The crystal structure of [PPh 4 ][Hg(η 3 -B 6 H 6 )Ph] has been determined by single crystal X-ray diffraction analysis; monoclinic space group P 2 1 /c with a = 9.567(5) Å, b = 22.213(5) Å, c = 14.296(5) Å, β = 94.484(5)°. The 11 B NMR spectrum exhibits a doublet at -9.9 ppm shifted to lower field as compared with [B 6 H 7 ] - and the 199 Hg NMR spectrum a singlet at -74.5 ppm. In the IR and Raman spectra characteristic B-H vibrations are observed