Syntheses, crystal structures and ESI mass spectra of selenium bridged gold(I) complex cations [Au10Se4(dppm)4]2+ and [Au18Se8(dppe)6]2+
. Fenske, Dieter; Langetepe, Timo; Kappes, Manfred M.; Hampe, Oliver; Weis, Patrick. Institut fur Anorganische Chemie der Universitat, Karlsruhe, Germany. Angew. Chem., Int. Ed. (2000), 39(10), 1857-1860. ISSN: 1433-7851.Abstract
[(AuBr)2(dppm)] reacted with Se(SiMe3)2 to give [Au10Se4(dppm)4]Br2 (I). [(AuCl)2(dppe)] reacted with Se(SiMe3)2 to give [Au18Se8(dppe)6]Cl2 (II) which was converted to the PF6- and BPh4- salts. I is monoclinic, space group P21/c, Z = 4, R = 0.05, Rw = 0.15. II is monoclinic, space group P21/n, Z = 4, R = 0.10, Rw = 0.27. The molecular structure of I consists of an irregular, corrugates octagon of eight Au atoms which is centered by two additional Au atoms; the eight metal centers are nearly linearly coordinated to one P and one Se and the inner Au atoms are bound almost linearly to two Se neighbors. Electrospray mass spectroscopy data for [Au18Se8(dppe)6](PF6)2 indicate the great stability of these complexes.