T. Szymanskabuzar et T. Glowiak, SOLID-STATE STRUCTURE AND SPECTROSCOPIC PROPERTIES OF [WCL(SNCL3)(CO)(3)(ETA(4)-NBD)], NBD EQUALS NORBORNADIENE, Polyhedron, 16(10), 1997, pp. 1599-1603
The heterobimetallic complex [WCl(SnCl3)(CO)(3)(NCMe)(2)](1) reacts wi
th norbornadiene (NBD) at room temperature, liberating two acetonitril
e ligands to form the seven-coordinate complex [WCl(SnCl3)(CO)(3)(eta(
4)-NBD)](2). The compound 2 is the first structurally characterized ex
ample of monomeric, halocarbonyls with a tungsten-tin bond in which a
diene ligand is present on tungsten. The IR, C-13 NMR spectra of 2 are
also described and can be correlated with the crystallographically ob
served geometry. The structure of 2 provides a good model for comparin
g the trans influence of the chlorine and carbon monoxide ligands in t
his molecule. (C) 1997 Elsevier Science Ltd.