122145-89-5Relevant academic research and scientific papers
Synthesis, structure, and thermal destruction of aroxytetraphenylstiboranes
Sharutin, V. V.,Zhidkov, V. V.,Muslin, D. V.,Liapina, N. Sh.,Fukin, G. K.,et al.
, p. 931 - 936 (2007/10/02)
A series of aroxytetraphenylstiboranes, Ph4SbOAr, were obtained by the reaction of pentaphenylstiborane with phenols at ca.20 deg C.The thermolysis of these compounds gives O- or o-C-phenylation products.The thermolysis of stiboranes, which incorporate aryl groups containing electron-withdrawing substituents (Ar = 2,4-Br2, 2,4-Cl2, 2-NO2, 4-OPh) produces predominantly simple diaryl ethers of asymmetric structure in 58percent, 90percent, 32percent, and 60percent yields, respectively.
HYDROGEN AND COORDINATION BONDS IN ISOSTRUCTURAL SYSTEMS. ARE HYDROGEN BONDS UNIQUE?
Epstein, L. M.,Shubina, E. S.,Kravtsov, D. N.
, p. 327 - 338 (2007/10/02)
Reliable spectral criteria which allow comparison of the hydrogen and coordination bonds in isostructural systems are suggested.The model systems consist of ArXH and ArXMRn (X=O, S, N; M=Hg, Sn, Pb, Sb; Ar=C6H4Y where Y=COR, NO2, C5H4N, etc.) which interact with various N-, P- and O-bases.The conditions on which the νXM vibrations are local, have been established.Examination of thiol derivatives reveals the similarity of spectral (IR, Raman) effects for coordination and hydrogen bonds in the νXM and νXH regions, respectively.The character of dependence of a proton and a bul ky organometallic cation transfer on medium, a heteroatom X or a base is shown to be similar.Some quantitative and qualitative relationships between XH and XM bond polarities and the capacity to form complexes, ionic pairs or ions are found.Comparison of spectral properties of isostructural systems with hydrogen and coordination bonds does not reveal the uniqueness of the H bond.
