Spectroscopic investigations of complexes between acetonitrile and aluminum trichloride. 1. Aluminum chloride-acetonitrile solutions

Europium and terbium thiocyanates: Syntheses, crystal structures, luminescence and magnetic properties

“…The CN in homoleptic thiocyanate compounds can vary from 6 in (nBu 4 N) 3 [17]. Coordination of macrocyclic 18-crown-6 increases the CN to 9 in [Ln(18-crown-6)(NCS) 3 ] (Ln = La, Nd, Yb) complexes [18]. The diversity of structural chemistry of REEs considerably depends on the electron-donating capability of the ligands and solvents used, which affect the formation of various forms, i.e., molecular or ionic complexes.…”

Variation in IR and Raman Spectra of CD3CN upon Solvation of InCl3in CD3CN: Distinctive Blue Shifts, Coordination Number, Donor-Acceptor Interaction, and Solvated Species

“…The GaCl3 normally generates at least two different solid adducts with pyridine, 19 and AlCl3 forms four different cationic complexes with acetonitrile. 16,22 Acetonitrile solution containing Group 13 metal halide is primarily ionic. 20,23 The tetra halide anions (MCl4 -) are also identified from the solution 16,20,22,24 and molten salt.…”

“…16,22 Acetonitrile solution containing Group 13 metal halide is primarily ionic. 20,23 The tetra halide anions (MCl4 -) are also identified from the solution 16,20,22,24 and molten salt. 25 This work is part of a continuing effort to understand the nature of solute species in acetonitrile and the variation of vibrational characteristics of acetonitrile caused by coordination of solvated species.…”

“…Recently large blue shifts of the ν2 C≡N stretching, ν4 C-C stretching, and ν8 CCN deformation bands were observed upon solvation of AlCl3 and GaCl3, along with the evidences for formation of several acetonitrile complexes with the solute. 16,22 It is, therefore, intriguing whether or not InCl3 shows similar shifts of vibrational characteristics and a continuing variation with going down the family column. In this paper, we report a vibrational study of anhydrous CD 3 CN solution of InCl 3 .…”

“…16 The presence of those Group 13 metal complexes was in fact previously suggested in NMR and X-ray studies as well. 22 Apparently the shoulder at 2258 cm -1 , which arises from associated CD3CN including the dimer and multimers, weakens, as the new bands emerge. It is expected that the concentration of associated acetonitrile is lower in solution because the chances for free acetonitrile molecules to collide each other should be lower than in pure acetonitrile, as more acetonitrile molecules being coordinated to the solute.…”