| | 21 | Author
| Peter Dierkes, Kurt Dehnicke, Dieter Fenske | Requires cookie* | | | Title
| Diinkomplexe  | | | | Abstract
| von Wolfram(VI). D ie Kristallstruktur von [(Et2S)WCl4(Me3S i-C = C -(C H 2)4 -C = C -S iM e 3)WCl4(SEt2)] Diyne Complexes of Tungsten(VI). The Crystal Structure of [(Et2 S)WCl4 (M e3Si -C = C -(C H 2)4-C ^ C -SiMe3) WCl4 (SEt2)] The diyne complexes [(Et2S)W C l4(R -C ^ C -(C H 2)" -C = C -R)W C l4(SEt2)] (R = SiM e3, n = 3, 4, 8; R = C6H 5, n = 4, 8) have been prepared by the reaction o f /rarcs-[WCl4(SEt2)2] with the corresponding diyne in toluene solutions. The com plexes form green or orange, diamagne tic, moisture sensitive crystal powders, which were characterized by their IR and 13C NM R spec tra. The crystal structure of the com plex with R = SiM e3 and n = 4 has been determined. [(Et2S)WCl4(M e3S i-C = C -(C H 2)4-C = C -S iM e 3)W Cl4(SE t2)]: Space group P2j/c, Z -2, 3620 observed unique reflections with I>2a(I), R = 0.027. Lattice dimensions at -7 0 °C: a -1431.8(11), b -839.6(8), c = 1731.3(11) pm, ß = 112.74(2)°. The structure consists o f m ole cules in which both tungsten atom s are surrounded by four chlorine atoms in equatorial positions, both alkyne groups are bonded side on (rj2) to the tungsten atoms, whereas the sulfur atoms of the diethylsulfide molecules are located trans to the alkyne groups. | | | |
Reference
| Z. Naturforsch. 49b, 1391—1396 (1994); eingegangen am 17. Mai 1994 | | | |
Published
| 1994 | | | |
Keywords
| Diyne Complexes of Tungsten(VI), Synthesis, IR Spectra, NM R Spectra, Crystal Structure | | | |
Similar Items
| Find | | | DEBUG INFO
| | | | | TEI-XML for
| default:Reihe_B/49/ZNB-1994-49b-1391.pdf | | | | Identifier
| ZNB-1994-49b-1391 | | | | Volume
| 49 | |
|
