Neutral complexes of the indium dihalides

Abstract

IAN SINCLAIR and IAN J. WORRALL. Can. J. Chem. 60, 695 (1982). The neutral complexes In2)d.2L (X = C1, Br, I; L = 1,4dioxan, tetrahydropyran, tetrahydrofuran, tetrahydrothiophene), Introduction Although the gallium halides Ga,X4 are ionic mixed oxidation state compounds they react with many ligands to form neutral gallium-gallium bonded complexes (1, 2). Recent crystal structure determinations have confirmed the presence of these bonds in Ga2X4.2disxan (X = C1, Br) (1, 3) and Ga2Br4. 2pyridine (4). The use of the structurally similar indium and thallium dihalides to prepare neutral metal-metal bonded complexes of these elements is a logical extension to the gallium work and we here report the preparation of a number of neutral indium compounds which appear to be similar to their gallium analogues and contain indium-indium bonds.A survey of previous work suggests that the indium dihalides are capable of forming both ionic and neutral complexes; aniline complexes of stoichiometry InX2-2aniline have been formulated In-(aniline),+In&-(5) and Russian workers have proposed that metal-metal bonds are present in the

The crystal and molecular structure of the bis(N,N,N′,N′-tetramethylethanediamine) adduct of I(Br)InInBr2, In2Br3I•2C6H16N2, an indium–indium bonded molecule

“…Each indium atom is coordinated by two halogen atoms and a bidentate tmen ligand. (4) A found from the X-ray study of hexaphenyldistannane (17) demonstrates the similarities in the M-M bonding propertiesoof indium and tin. Finally we note that the distance of 2.775 A yields a covalent radius of 1.39 A for the indium atom.…”

“…The dihalides are now , known to be mixed oxidation state ionic dimers (I), but both , the anionic complexes ln2X6'-(X = C1, Br, I) (2) and the I adducts of In2X, (3,4) have been formulated as genuine com-I pounds of indium(II), all involving indium-indium bonds. The general trend here is very similar to that of gallium(II), for which X-ray studies have demonstrated the presence of Ga-Ga bonding in Ga,X;-anions (5,6), and in the 1,4-dioxane and pyridine adducts of Ga2BrJ (7,8).…”

Ultrathin β-In2S3Nanobelts: Shape-Controlled Synthesis and Optical and Photocatalytic Properties

“…Few products were obtained without the existence of hexadecylamine in the pyridine system, while substituting hexadecylamine with octadecylamine or oleylamine allowed the formation of similar β-In 2 S 3 beltlike nanostructures. It is well-known that pyridine is a kind of stronger coordinating solvents and can coordinate with In 3+ to form In 2 Cl 4 ·4L (L = pyridine) complex compound . The formed complex compound would severely suppress the combining reaction between In 3+ and S 2− .…”

“…It is well-known that pyridine is a kind of stronger coordinating solvents and can coordinate with In 3+ to form In 2 Cl 4 • 4L (L ) pyridine) complex compound. 43 The formed complex compound would severely suppress the combining reaction between In 3+ and S 2-. Therefore, no In 2 S 3 products could be obtained without the existence of alkyl amines.…”