Infrared Spectra of Indium Hydrides in Solid Hydrogen and of Solid Indane

Abstract

One little indium: Reactions of laser‐ablated indium atoms with pure hydrogen give sharp IR absorptions corresponding to InH intermediate species. Irradiation at 193 nm maximizes further reaction to give the indane monomer InH3. Annealing provides evidence for In2H6 and ultimately the sharp absorption bands are replaced with a broad IR band centered at 1460 cm−1 assigned to solid indane (InH3)n [see Equation].${\vcenter{\openup.5em\halign{$#$\cr {\rm InH}_{3}\rightarrow {1\over 2}{\rm In}_{2}{\rm H}_{6}\rightarrow {1\over n}({\rm InH}_{3})_{n}\hfill\cr}}}$

The Search for Superconductivity in High Pressure Hydrides

“…246 In fact, some studies suggest that InH 3 and TlH 3 are not stable enough to be isolated in the solid state at ambient pressure and temperature. 247,248 However, molecular hydrides of these elements have been synthesized in the gas phase at cryogenic temperatures via laser ablation in inert matrices. These include In 2 H 2 , InH 3 , In 2 H 4 , In 2 H 6 , 241,248,249 TlH, TlH 2 , TlH 3 , Tl 2 H 2 and TlTlH 2 .…”

“…247,248 However, molecular hydrides of these elements have been synthesized in the gas phase at cryogenic temperatures via laser ablation in inert matrices. These include In 2 H 2 , InH 3 , In 2 H 4 , In 2 H 6 , 241,248,249 TlH, TlH 2 , TlH 3 , Tl 2 H 2 and TlTlH 2 . 250 CSP techniques have therefore been used to determine if hydrides of indium could become stable under pressure.…”

Propane dehydrogenation over extra-framework In(i) in chabazite zeolites

“…The identification of [InH 2 ] + as the active site for ethane dehydrogenation was primarily based on ex-situ FTIR spectroscopy and DFT calculations, 33,34 however, the spectra used in support of the presence of [InH 2 ] + were collected at low temperature (below 153 K, after treating with H 2 at 773 K), and thereby whether the indium hydride is stable at the reaction temperature (600 °C) remains to be determined. Furthermore, Andrews et al 35 have found that indium hydride is unstable at temperatures above 200 K (indium hydride forms at 3.5 K but disappears above 200-210 K). It is thus uncertain whether [InH 2 ] + is an intermediate at catalytic reaction temperatures.…”

Syntheses and Structures of Ruthenium Complexes Containing a Ru‐H‐Tl Three‐Center–Two‐Electron Bond

“…[2,3] Other reported transition-metal s-complexes with M À H À E3 c-2e bonding include those of the type L n M{h 2 -(H À EX n )} where Ei s aGroup 13 or 14 element [4] (E = B, [5] Al, [6] Ga, [7] C, [8,9] Si, [10,11] Ge, [12] Sn [13] ). [15] It was demonstrated that unstable saturated species such as H 2 SiR 3 À [16] and SiH 6 2À [17] can be successfully stabilized by scomplexation. We report herein the preparation and structural characterization of [CpRu(H)(Tl)(PP)]PF 6 (PP = dppm and dppe), which contain a3 c-2e bond and can be viewed as the ruthenium s-complexes [CpRu{h 2 -(H À Tl)}(PP)] + (PP = dppm, dppe) containing h 2 -thallane TlH, aperiod 6main-group element hydride.…”