Intermolecular Hydrogen Bonding of ReH₂(CO)(NO)L₂ Hydrides with Perfluoro-tert-butyl Alcohol. Competition between M−H···H−OR and M−NO···H−OR Interactions

Nitrosylation in a Crystal: Remarkable Movements of Iron Porphyrins Upon Binding of Nitric Oxide

“…[14] For example, Belkova and co-workers reported the formation of a hydrogen bond between the nitrosyl O atoms of [Re(NO)(CO)(PR 3 ) 2 (H) 2 ] (R = Me, Et, iPr) and (F 3 C) 3 COH molecules. [19] Analogous hydrogen bonding of H 2 O molecules to nitrosyl O atoms of ferrous [(por)Fe-(ImH)(NO)] compounds containing bent NO ligands has been examined computationally. [20] In summary, we have employed a rare solid-gas two-phase reaction to obtain and structurally characterize the NO adduct of a crystalline [(por)Fe(O-ligand)] species.…”

Hydridic reactivity of W(CO)(H)(NO)(PMe3)3 – Dihydrogen bonding and H2 formation with protic donors

“…In conjunction with catalysis, such as ''ionic hydrogenations" proceeding with proton and hydride transfers [32][33][34][35][36][37], the significance of particularly dihydrogen bonding is still a matter of dispute. Intramolecular hydrogen bonding of the hydride ligand was first discovered in the solid state in the groups of Morris and Crabtree [9][10][11], while the groups of Shubina and Berke provided spectroscopic, thermodynamic and structural evidence for intermolecular MHÁÁÁHX bonding in solution [12][13][14][15][16].…”

“…In comparison to the solid state, VT IR spectroscopy carried out in solution allows observation of unique hydrogen bonded species in equilibrium. Dihydrogen bonding established with many tungsten and rhenium hydrides and acidic alcohols like phenol, hexafluoro-2-propanol (HFIP) and perfluoro-2-methyl-2-propanol (PFTB) was studied in our group using VT IR spectroscopy [12,13,27]. Various other VT IR studies showed that dihydrogen bonding species indeed precede the proton transfer processes [42][43][44].…”

Vibrational Spectra of Nitrosyl-Substituted Transition-Metal Hydride Complexes: An Experimental and Theoretical Study of Carbonyldihydronitrosyl(trimethylphosphine)rhenium ([Re(CO)H2(NO)(PMe3)2])

“…During the course of our studies, we found that dihydrorhenium complexes are capable of undergoing a novel type of H-bonding interaction of the form MH´´´HX ( M metal), which is termed dihydrogen bonding [4]. In subsequent studies [5], we investigated the reaction of those complexes, which possess alkyl-substituted phosphine ligands, with acidic alcohols. Special emphasis was given to [ Re(CO )H 2 (NO)(PMe 3 ) 2 ] (1 a).…”