In₃I₂[C(SiMe₃)₃]₃:  Synthesis of a Diiodotrialkyltriindane(5) Containing Two In−In Single Bonds

Abstract

Treatment of the tetrahedral indium(I) cluster compound In 4 [C(SiMe 3 ) 3 ] 4 (1) with a mixture of AlI 3 and I 2 afforded the yellow diiodotriindium compound In 3 I 2 [C(SiMe 3 ) 3 ] 3 (2) in 73% yield. 1 contains a chain of three indium atoms connected by In-In single bonds. A trigonal bipyramidal structure resulted in the solid state by two iodide bridges between the terminal indium atoms.

Tetrahedral homonuclear organoelement clusters and subhalides of aluminium, gallium and indium

“…Indeed, iodine gave quite a clean reaction with the tetraindium cluster, which yielded a novel triindium compound In 3 I 2 [C(SiMe 3 ) 3 ] 3 (Fig. 5) in >70% yield (Uhl et al 2001b). The molecular structure of the product contains a chain of three indium atoms connected by two In-In single bonds (In-In distance 281.4 pm on average).…”

Alkylindium Subhalides Derived from the Tetrahedral Indium(I) Cluster Compound [In4{C(SiMe3)3}4]

“…A corresponding iodine compound [In 3 I 2 {C(SiMe 3 ) 3 } 3 ], which contains a chain of three indium atoms connected by In À In single bonds, was described only recently by our group in a preliminary communication. [11] Results and Discussion Reaction of 1 with hexachloroethane: synthesis of a dichlorodiindium compound containing bivalent indium atoms: As a mild chlorination agent we employed hexachloroethane, which has been used by several groups, for example, for the oxidation of phosphorus compounds. [12] Equivalent quantities of 1 and C 2 Cl 6 were heated in toluene for 25 min to 65 8C to completely consume the tetraindium(i) compound.…”

1,4‐Di(isopropyl)‐1,4‐diazabutadien als Abfangreagenz für monomere Bruchstücke des Tetragalliumclusters Ga4[C(SiMe3)3]4 – Bildung eines ungesättigten GaN2C2‐Heterocyclus und eines Oxidationsprodukts mit Ga‐O‐O‐Ga‐Gruppe

“…Eine mittlere Oxidationsstufe von ϩ1,5 ergibt sich für die nur mit Indium realisierte Verbindung In 4 Br 2 R 4 mit verzerrtem Tetraeder aus vier Metallatomen [10]. Eine Kette von drei Gallium-oder Indiumatomen (mittlere Oxidationsstufe ϩ1,66) liegt in den Trielement-Derivaten E 3 I 2 R 3 vor [11,12]. Zweiwertige Elemente mit den dafür charakteristischen isolierten E-E-Einfachbindungen finden sich in den Dielementdihalogeniden E 2 X 2 R 2 (X ϭ Cl, Br, I).…”