Synthesen und Kristallstrukturen neuer chalkogenido‐verbrückter Niob‐Kupfer‐Cluster |
| |
| Authors: | Bettina Bechlars Robert Feuerhake Dieter Fenske Prof. Dr. Dr.h.c. |
| |
| Affiliation: | 1. Karlsruhe, Institut für Anorganische Chemie der Universit?t Karlsruhe und Institut für Nanotechnologie des Forschungszentrums Karlsruhe;2. Karlsruhe, Institut für Anorganische Chemie der Universit?t Karlsruhe und Institut für Nanotechnologie des Forschungszentrums KarlsruheInstitut für Anorganische Chemie der Universit?t (TH), Engesserstr, Geb. 30.45, D‐76128 Karlsruhe |
| |
| Abstract: | ![]()
Syntheses and Crystal Structures of Novel Chalcogenido‐bridged Niobium Copper Clusters In the presence of tertiary phosphines, the reaction of NbCl5 and Copper(I) salts with Se(SiMe3)2 (E = S, Se) affords the new chalcogenido‐bridged niobium‐copper cluster compounds  ( 1 ) and [NbCu4Se4Cl (PPh3)4] ( 2 ). Using E(R)SiMe3 (E = S, Se, R = Ph, nPr) instead of the bisilylated selenium species leads to the compounds [NbCu2(SPh)6(PMe3)2] ( 3 ), [NbCu2(SPh)6(PnPr3)2] ( 4 ), [NbCu2(SePh)6(PMe3)2] ( 5 ), [NbCu2(SePh)6(PnPr3)2] ( 6 ), [NbCu2(SePh)6(PiPr3)2] ( 7 ), [NbCu2(SePh)6(PtBu3)2] ( 8 ), [NbCu2(SePh)6(PiPr2Me)2] ( 9 ), [NbCu2(SePh)6(PPhEt2)2] ( 10 ), [Nb2Cu2(SnPr)8(PnPr3)2Cl2] ( 11 ) and [Nb2Cu6(SnPr)12(PiPr3)2Cl4]·2 CH3CN ( 12 ·2 CH3CN). By reacting CuI salts and NbCl5 with the monosilylated selenides Se(tBu)SiMe3 and Se(iPr)SiMe3 which have a weak Se–C bond the products [Nb2Cu6Se6(PiPr3)6Cl4] ( 13 ), [Nb2Cu4Se2(SeiPr)6(PnPr3)4Cl2] ( 14 ) and [Nb2Cu6Se2(SeiPr)10(PEt2Me)2Cl2]·DME ( 15 ) are formed which contain selenide as well as alkylselenolate ligands. The molecular structures of all of these new compounds were determined by single crystal X‐ray diffraction measurements. |
| |
| Keywords: | Niobium Copper Cluster compounds Chalcogenes Heterobimetallic compounds |
|
|
