In the two preceding papers (Lewis & Welch, 1993; Cowie, Donohoe, Douek & Welch, 1993), we describe the molecular structures of 1,2-Ph2-1,2-closo-C2BloHlo and (7,8-Ph2-7,8-nido- C2B9HIo)-. These studies were stimulated by our previous observation (Lewis & Welch, 1992) of an...
ZG Lewis,AJ Welch 摘要: Diphenyl-10-endo-(triphenylphosphino mercury)-7,8-dicarba-nido-undecaborane(9) methyl- ene chloride solvate, C32H34B9HgP.CH2C12, Mr = 832.41, monoclinic, P2~, a= 10.9534(15), b= 13.274 (3), c = 11.5283 (17) A,/3 = 90.074 (12) °, V= 1676.1 flk 3...
Zirconyl chloride as a novel and efficient green Lewis acid catalyst for direct acetylation of cotton cellulose in the presence and absence of solvent. J. Polym. Res. 26, 156. https://doi.org/10.1007/s10965-019-1816-3 (2019). Article CAS Google Scholar Tsekova, P. & Stoilova, O. ...
of a Lewis acid/amine complex:the 1-phenyl-1- diethylaminocarbonyl-2-hydroxymethyl-cyclopropane-Z thus obtained is converted into a 2-chlorinated derivative by the action of a chlorination reagent such as thionyl chloride; andthe 1-... DCH Bigg,P Lesimple - US 被引量: 25发表: 1991年 Asym...
It was proven, that in formation of these complexes the chloride anion acts as a template [18]. Other metal complexes of HATU with known crystal structure include complexes of Ni(II), Pd(II), Pt(II) ([5], [19](a), [19](b), [19](c), [19](d), [19](e)). The earliest ...
Magnetic susceptibility was determined by the Faraday method using a model 300 Lewis coil force magnetometer of tesla field strength at room temperature and the instrument was calibrated with [Hg Co(SNC)4] [20]. 2.5. Antimicrobial Activity The in vitro biological screening effects of the ...
Even though the hardening of epoxy resins generally takes place by means of Lewis acids or acids, the anions of which are less nucleophilic than chloride and bromide, that is to say the anions of the hydrohalic acids which are formed during the photolysis of the novel compounds, layers which...
Structure of 7,8‐Ph2‐10‐endo‐PPh3Hg‐7,8‐nido‐C2B9H9 methylene chloride solvatedoi:10.1107/S0108270192012149Z.G.LewisA.J.WelchWileyActa Crystallographica Section C
In acidic aqueous solution tetrazotized p-phenylenediamine reacts with chloride, bromide, thiocyanate and azide ions to yield the corresponding p-substitut... ES Lewis,MD Johnson - 《Jnci Journal of the National Cancer Institute》 被引量: 92发表: 1960年 A novel synthesis of alkylbismuthonium sa...
Furfuryl alcohol (FA) was polymerised by iodine in methylene chloride to give a coloured, amorphous and branched polymer. Structure of FA polymers obtained with iodine have no significant differences according to the IR and NMR spectra respect to those obtained by using Br枚nsted or Lewis acids...