Synthesis and structure of a family of rhodium polystannide clusters [Rh@Sn₁₀]^3–, [Rh@Sn₁₂]^3–, [Rh₂@Sn₁₇]^6– and the first triply-fused stannide, [Rh₃@Sn₂₄]^5–

Abstract

Triply fused cluster: edge shared of three [Rh@Sn10] subunits lead to the largest endohedral polystannide with an entirely new triply fused topology.

Endohedral Plumbaspherenes of the Group 9 Metals: Synthesis, Structure and Properties of the [M@Pb12]3− (M=Co, Rh, Ir) Ions

“…They include [M@E 10 ] 2À (whereM = Ni, Pd, Pt;E = Pb), [9] the fluxional [M 2 @Sn 17 ] 4À ions (M = Ni, Pt) [1,10] and the [M@E 12 ] nÀ ions (where M = Ni, Pd, Pt, Au, Mn;E= Pb, n = 2, 3) to name af ew. [11][12][13][14][15][16][17][18][19] The icosahedral [M@E 12 ] nÀ clusters are ag rowing class of ions that have unique properties, such as high electronic degeneracies, rigorous I h point symmetry,a nd s-aromaticity that impartsu nusuals tability and anomalous NMR chemical shifts. The [M@Pb 12 ] 2À/3À plumbaspherenes (M = Ni, Pd, Pt, Rh, Mn, Au) [11][12][13][14][15] and [Ir@Sn 12 ] 2À have been crystallographically characterizeda nd are reminiscento ft he icosahedrals ubunits found in the solid state (e.g.…”

Structure and Bonding in [Sb@In8Sb12]3− and [Sb@In8Sb12]5−

“…The cubic coordination of Sb is also broadly consistent with the known structural chemistry of centered main group (semi-)metal cages. [28][29][30][31][32][33][34][35][36][37][38][39][40] The gas-phase potential energy surface for the [Sb@In8Sb12] 5cluster is complex, featuring eight equivalent minima with a single In + center, linked by low-lying transition states where the additional electron pair is delocalized over two adjacent In centers (similar to the situation found in the trans-bent double bonds, R2E=ER2, of the heavier group IV elements). Our analysis of the X-ray data shows that the best fit for the [Sb@In8Sb12] 5component is a structure close to the transition state, where two In centers are displaced simultaneously outwards from the cube, rather than one or more of the minima where only a single center is displaced.…”

Current advances in tin cluster chemistry

“…6, top right). 131 The rst three of these anions represent well-known intermetalloid cluster types, even though (drastic) distortions away from idealized geometries are observed. This is most notable in [Rh@Sn 10 ] 3À , and these Fig.…”