2009
DOI: 10.1002/ange.200904242
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Chemie mit substituentenfreien Silicium‐Clustern in Lösung – ein Übergangsmetallkomplex eines Polysilicid‐Anions

Abstract: Reine Silicium‐Bausteine in Lösung erweitern das Repertoire der Materialwissenschaft im Bereich der Gruppe‐14‐Elemente. Die Bildung des Komplexanions [{Ni(CO)2}2(μ‐Si9)2]8− demonstriert, dass das Si94−‐Zintl‐Anion für gezielte Synthesen nutzbar ist (siehe Schema).

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Cited by 38 publications
(19 citation statements)
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References 58 publications
(46 reference statements)
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“…The [2.2.2]-cryptand, choline chloride, PPh 3 and Pt(PPh 3 ) 4 were dried in vacuo before use. K 6 Rb 6 Si 17 was prepared in glass ampoules according to the known procedure [10,11].…”
Section: Methodsmentioning
confidence: 99%
See 1 more Smart Citation
“…The [2.2.2]-cryptand, choline chloride, PPh 3 and Pt(PPh 3 ) 4 were dried in vacuo before use. K 6 Rb 6 Si 17 was prepared in glass ampoules according to the known procedure [10,11].…”
Section: Methodsmentioning
confidence: 99%
“…A short time ago, we were able to show that this is also possible for the nonasilicide cluster Si 9 4− [10]. In the resulting solutions, a ligand exchange reaction leading to the first transition metal complex of a silicide could be performed [11].…”
Section: Introductionmentioning
confidence: 94%
“…[20,21] Für Rb und K konnten sogar die beiden unterschiedlichen kristallographischen Positionen aufgelçst werden, welche zu separaten NMR-Signalen aufspalten (Rb: À290 ppm, À305 ppm; K: À320 ppm, À340 ppm [14,15] und Umsetzungen [16] von Siliciden verwendeten wir ein Material der nominellen Zusammensetzung K 6 Rb 6 Si 17 . Bisher gab es lediglich indirekte Indizienbeweise für gelçste Silicid-Cluster, eine direkte Beobachtung durch 29 Si-NMR-Spektroskopie blieb verwehrt.…”
Section: Angewandte Zuschriftenunclassified
“…[9] For the lighter homologues Si and Ge, the only known analoguous solvate crystal structure is a functionalized tetrahedral silicide. [16] Fässler et al also succeeded in the synthesis of a functionalized silicide, [(MesCu) 2 (h 3 -Si 4 )] 4À (Mes = 2,4,6-Me 3 C 6 H 2 ), which contains Si 4 tetrahedra bonded to copper, in liquid ammonia from a similar starting material. [1] Indeed, there has not been any report on an NMR signal of a bare homoatomic polyanion of silicon in solution to date.…”
mentioning
confidence: 99%