673-55-2Relevant articles and documents
Supernucleophilic systems based on functionalized surfactants in the decomposition of 4-nitrophenyl esters derived from phosphorus and sulfur acids. III. Reactivity of mixed micellar systems based on tetraalkylammonium and imidazolium surfactants
Prokop'Eva,Kapitanov,Belousova,Shumeiko,Kostrikin,Turovskaya,Razumova,Popov
, p. 1083 - 1090 (2015)
Reactivity of mixed micellar systems based on the functionalized imidazolium and tetraalkylammonium surfactanats in the reaction of cleavage of 4-nitrophenyl ethyl ethylphosphonate was studied. Replacing of an imidazolium fragment in the detergent structure with a tetraalkylammonium one reveals decreasing the substrate solubilization efficiency. In the case of dimeric surfactants, the nucleophilicity of the oximate fragment is considerably (ca. 2 times) decreased thus additionally decreasing the rate of cleavage of the organophosphorus substarte. Therefore the nature of the cationic center in the head group may affect the extent of the observed micellar effects of functionalized surfactants.
A novel high-spin tridecanuclear NiII cluster with an azido-bridged core exhibiting disk-like topology
Brunet, Gabriel,Habib, Fatemah,Cook, Cyril,Pathmalingam, Thushan,Loiseau, Francis,Korobkov, Ilia,Burchell, Tara J.,Beauchemin, Andre M.,Murugesu, Muralee
, p. 1287 - 1289 (2012)
A high-spin tridecanuclear NiII cluster, [NiII 13(N3)18(dpo)4(Hdpo) 2(H2hpo)4(H2O)(MeOH)] [Ni II13(N3)18(dpo)4(Hdpo) 2(H2hpo)4(H2O)2] (1) (Hdpo = 1-(dimethylamino)propan-2-one oxime and H2hpo = 1-(hydroxyamino)propan-2-one oxime) with a purely azido-bridged core, is reported with dominant ferromagnetic coupling between NiII ions. The latter molecule exhibits a unique planar core topology with the largest N 3-:NiII ratio reported to date. The Royal Society of Chemistry 2012.
Stereochemical and electronic interaction studies of α-heterosubstituted acetone oximes
Olivato, P. R.,Ribeiro, D. S.,Rittner, R.,Hase, Y.,Pra del, D.,Bombieri, G.
, p. 1479 - 1496 (2007/10/02)
The free νC=N bands in the IR spectra of some α-heterosubstituted acetone oximes show the existence of only a monomeric form in chloroform solutions below 1E-2 M, while in carbon tetrachloride self-associated species are also present.The 1H and 13C NMR chemical shift data indicate the predominance of the E over the Z isomer.The ΔνC=N frequency shifts and molecular mechanics strongly suggest that the oximes are in the gauche conformation.X-ray diffraction data have shown that the single dimethylaminoacetone oxime isomer exists in the E configuration and gauche conformation.Non-additivity effects for the α-methylene carbon chemi cal shifts seem to indicate the occurence of a ?C=N/?*C-x interaction besides the ?*C=N/?C-X hyperconjugative interaction.
