[Ge₉{Si(SiMe₃)₃}₃{SnPh₃}]: A Tetrasubstituted and Neutral Deltahedral Nine‐Atom Cluster

Abstract

Reaching neutral territory: The title compound, the first tetrasubstituted deltahedral Zintl cluster, is no longer an ion (see picture; Ge green, Si purple, Sn blue). It is a neutral molecule formed by a reaction of the trisilylated anion with Ph(3) SnCl.

{Ge9[Si(SiMe3)2(SiPh3)]3}−: Ligand Modification in Metalloid Germanium Cluster Chemistry

“…Therefore, we thought that another bulky silyl ligand would be most appropriate. Referring to our recent investigation of the ligand system Si(SiMe 3 ) 2 (SiPh 3 ) (Hyp Ph3 ) for tin chemistry 17 10 We reacted a K 4 Ge 9 suspension in acetonitrile with 3 equiv of Cl[Hyp Ph3 ]. Thereby the color of the solution changed to red indicating that a reaction took place.…”

Reactivity of [Ge9{Si(SiMe3)3}3]− Towards Transition‐Metal M2+ Cations: Coordination and Redox Chemistry

“…[1] In addition to naked Zintl anionslike E 9 4À ,the metalloid germanium cluster [Ge 9 Hyp 3 ] À 1 (Hyp = Si(SiMe 3 ) 3 ) [2] is becoming am ajor focus of actual research, not only due to its good solubility in different solvents, but also due to its high yield synthesis from the Zintl anion Ge 9 4À as introduced by Sevov et al [3] Compound 1 exhibits an incompletely shielded clusterc ore, giving accesst oavariety of furtheri nvestigations.T hereby build-up reactions were possible to give clusters of the composition [Hyp 3 Ge 9 -M-Ge 9 Hyp 3 ] x (x = À1: M = Cu, Ag, Au; x = 0: M= Zn, Cd, Hg) [4] and recently ac ompound exhibiting al inear chain build-up of two coppera toms and two Ge 9 Hyp 3 units: [Ge 9 Hyp 3 -Cu-Ge 9 Hyp 3 -Cu-PPh 3 ]w as synthesized,s howing the potentialof1 for the synthesis of novel materials. [6,7] The addition of af ourth ligand to 1 gives neutralc ompounds of the composition R-(Ge 9 Hyp 3 )( R= SnPh 3 ,E t) [8,9] and recently we could show that 1 can be coupled, by means of oxidation, to give the largest metalloid Group 14 cluster Ge 18 Hyp 6, in which the germani-um atoms are arranged in au nique way, giving insighti nto the formation processo ft he new solid-state structure of ger-maniumG e(cF136) [10] on an atomics cale. [6,7] The addition of af ourth ligand to 1 gives neutralc ompounds of the composition R-(Ge 9 Hyp 3 )( R= SnPh 3 ,E t) [8,9] and recently we could show that 1 can be coupled, by means of oxidation, to give the largest metalloid Group 14 cluster Ge 18 Hyp 6, in which the germani-um atoms are arranged in au nique way, giving insighti nto the formation processo ft he new solid-state structure of ger-maniumG e(cF136) [10] on an atomics cale.…”

[(Me3Si)Si]3EtGe9Pd(PPh3), a Pentafunctionalized Deltahedral Zintl Cluster: Synthesis, Structure, and Solution Dynamics

“…[4] Not long ago,w er eported ad ifferent approach for synthesis of the anion in nearly quantitative yields. [6] Our recent studies have shown that some of these neutral species exhibit interesting solution dynamics that resembles those observed before for substituted and/or centered Sn 9 and Pb 9 clusters. [6] Our recent studies have shown that some of these neutral species exhibit interesting solution dynamics that resembles those observed before for substituted and/or centered Sn 9 and Pb 9 clusters.…”