The internal hydrogen for enol ACAC is found to be symmetrically arranged between the two oxygens with an OHO angle of 152掳 and an OH bond length of 1.174 . Fluorine substitution to produce the electronically asymmetric molecule TFA causes only a slight asymmetry in the position of the ...
The products of these reactions are generally referred to as having structure 33a. This is a resonance form of 33b (Scheme 12). However, all known X-ray crystallographic data on these compounds indicate a bent PCP bond and a carbonmetal bond. Therefore, these species are not covered further...
Many-particle effects in the bond length alternation of alternant hydrocarbons The local approach (LA) method has been employed to investigate the correlated ground state wavefunction in alternant monocyclic and linear hydrocarbon sy... MC B?Hm,J Schütt - 《Molecular Physics》 被引量: 4发表: ...
S1(b)). Thus, it completely allows the geometry of the In2O3 nanostructure to compress the ion within its structure, which results in poor shielding of 3d electrons of Cu and Ni ions. On the other hand, cobalt (Co) and manganese (Mn) cannot be doped into the In2O3 nanostructure ...
(a) Schematic diagrams of the acetone sensing mechanisms of heterostructure α-Fe2O3/NiO nanosheet-covered fibers in the presence of air and target acetone gas. The proposed energy band structure; (b) NiO and α-Fe2O3in air before combination and (c) α-Fe2O3/NiO heterojunction in aceto...
The molecule propanone 2,4-dinitrophenylhydrazone, C9H10N4O4, is nearly planar, with the non-H atoms exhibiting a mean deviation of 0.052 angstrom from their best plane. The largest deviation from coplanarity is 0.194 (3) angstrom, for one of the methyl groups. The N-N bond has length ...
A small alkyl chain length effect of the C(n)mim(+) cations was observed in the surface tension. By the Gibbs adsorption isotherm, it was found that I - anion-mediated surface structure became dominant above 40 mol%. In the different [C(n)mim][TFSI]-acetone mixtures, normal decay of ...
The nitrogen atoms in the complex are not coordinated; the coordination sphere involves Co—S 6 bonding of approximate D 3 symmetry, the average Co—S bond length being 2.275 Å. The geometry of the coordination sphere with respect to a defined C 3 reference axis is similar to that found...
Thus, even small variations in the chemical structure of the IL can have a very significant influence in the phase behaviour of acetone + IL systems. The particular liquid–liquid-vapour equilibrium behaviour of acetone + [C2mim][OAc] will be the object of further and detailed analysis in a...
The bidentate oxine ligand has a bite angle of 81.00 (8)° and the Rh - P bond length is 2.1819 (6) . 2006 International Union of Crystallography All rights reserved.doi:10.1107/S1600536806040189J. Marthinus Janse van RensburgAlfred Muller...