100459-40-3Relevant academic research and scientific papers
Phosphine-Substituted Chelate Ligands, XIV. Hydrogen Bonding in THF-Adducts of Tetracarbonylchromium and -molybdenum Complexes with P,S-Coordinated Phosphinothioformamide Ligands. Crystal Structure of *THF
Kunze, Udo,Jawad, Hussain,Hiller, Wolfgang,Naumer, Regina
, p. 512 - 517 (2007/10/02)
The tetracarbonyl chromium and molybdenum P,S-chelate complexes 1a, b and 2a, b are obtained by low-temperature photolysis of the metal hexacarbonyls with the neutral phosphinothioformamide ligands, Ph2PC(S)NHR (R=Me (a), Ph (b)), as stoichiometric 1/1 THF adducts.A weak N-H***O(THF) hydrogen bond id deduced from the 1H NMR spectra which show a collapse of the N-methyl doublet in 1a (Tc-18 deg C) but not in 2a.Unusually small P-C(S) couplings are observed in the 13C NMR spectra.The N-methyl chromium complex 1a crystallized in the triclinic space group P1 (Z = 2) with the lattice constants a = 1076.6(3), b = 1235.8(3), c = 915.1(3) pm, α = 97.99(4) deg, β = 92.73(5) deg, γ = 87.63(5) deg.The planar thioamide unit adopts the Z configuration and is linked to the tetrahydrofuran molecule by a hydrogen bond (N-H1-O31 164 deg) with an O***H contact distance of 191 pm. - Key words: Hydrogen Bonding, THF-Adducts, Phosphinothioformamide Complexes, Crystal Structure, Chromium Complex
