Main group coordination chemistry at low temperatures: A review of matrix isolated Group 12 to Group 18 complexes

Exploring the C-X…π Halogen Bonding Motif: An Infrared and Raman Study of the Complexes of CF3X (X = Cl, Br and I) with the Aromatic Model Compounds Benzene and Toluene

“…The observations, however, are in line with the differences in infrared intensity, suggesting that the induced ring breathing mode in the complex with CF 3 I is almost twice as large as that in the complex with CF 3 Br, and with the above observations showing that even when a large excess of CF 3 Br is used, the equilibrium concentrations of the complexes formed remain rather small. The changes in induced infrared intensity, in a first approximation, can be correlated with the large differences in dipole moment between CF 3 I and CF 3 Br and with the level of charge transfer present, giving rise to an approximate penetration depth [25] and an X … π intermolecular distance of −0.20 and −0.35 Å, and of 3.45 and 3.50 Å, respectively. Figure 6.…”

Coordination chemistry of the main group elements with phosphine, arsine and stibine ligands

“…Boron halide adducts made in the gas phase or isolated in low temperature matrices have been reviewed, along with the relevant computational modelling [12].…”

“…Phosphine boranes have been reviewed twice in the recent past [10,11] and thus are not included in the present article. A number of weak adducts between PH 3 or PMe 3 and p-block Lewis acids formed at low temperatures and characterised using matrix isolation techniques have been discussed in a very recent comprehensive review of the field [12].…”

Systematics of BX3 and BX2+ Complexes (X = F, Cl, Br, I) with Neutral Diphosphine and Diarsine Ligands

“…This is a very active area of both experimental and theoretical research and the issues are discussed in detail in several recent articles and reviews. 1,2,3,4,5,6 It is important to note that the properties of both the Lewis acid and Lewis base in a complex 3 [BF3(EMe3)] (E = P or As): These two complexes serve as useful models for the bidentate diphosphine and diarsine complexes described below. [BF3(PMe3)] has been studied on several occasions 13.16 and our spectroscopic data are in good agreement, however, its structure has not been reported previously.…”