نتایج جستجو برای: 605 rh and 168 h
تعداد نتایج: 16883128 فیلتر نتایج به سال:
Monometallic complexes of the tetrakis(pyrazolyl)borate ligand [ML(2){B(pz)(4)}] {M = Rh, Ir; L(2) = eta-cod, eta-nbd, (CO)(2), (CO)(PPh(3))} have two free pyrazolyl rings which can be coordinated to a second ML(2) unit to give the dimeric compounds [L(2)M{mu-B(pz)(4)}ML(2)](+), and to a metal halide to give heterobimetallic species [L(2)M{mu-B(pz)(4)}M'Cl(2)]. (1)H NMR spectroscopy shows that ...
The title complex, aqua-[1,3-bis-(2,6-diiso-propyl-phen-yl)imid-az-ol-2-yl-idene](η(4)-cyclo-octa-1,5-diene)rhodium(I) tetra-fluor-ido-borate, [Rh(C(8)H(12))(C(27)H(36)N(2))(H(2)O)]BF(4), exihibits a square-planar geometry around the Rh(I) atom, formed by a bidentate cyclo-octa-1,5-diene (cod) ligand, an N-heterocylcic carbene and an aqua ligand. The complex is cationic and a BF(4) (-) anion ba...
Abbreviations: chronic obstructive pulmonary disease, COPD; quality adjusted life years, QALYs; forced expiratory volume in 1 second, FEV1; forced vital capacity, FVC Citation: Pinnock H, Sohanpal R. Editorial-Chronic obstructive pulmonary disease: reduced nihilism, but there is still a ways to go. Chronic Obstr Pulm Dis (Miami). 2016; 3(3): 605-609. doi: http://dx.doi.org/10.15326/jcopdf.3.3.2...
PURPOSE To evaluate the validity of a keratometry (K)-independent method of estimating effective lens position (ELP) before phacoemulsification cataract surgery. SETTING Institute of Eye Surgery, Whitfield Clinic, Waterford, Ireland. DESIGN Evaluation of diagnostic test or technology. METHODS The anterior chamber diameter and corneal height in eyes scheduled for cataract surgery were meas...
20. Fisher, R. A.: Cit. by Race, R. R.: An incomplete antibody in human serum. Nature, Lond. 153: 771-772 (1944). 21. Rosenfield, R. E.; Vogel, P.; Gibbel, N.; Sanger, R. and Race, R. R.: A new Rh antibody, anti-f. Brit. med. J. i: 975 (1953). 22. Sanger, R.; Race, R. R.; Rosenfield, R. E.; Vogel, P. and Gibbel, JV..Anti-f and the new Rh antigen it defines. Proc. nat. Acad. Sei. 39: 824-834 (19...
The complex [Rh(I(t)Bu)(2)HCl] has been shown to be an active catalyst in the hydrosilylation of carbonyl and imine complexes. This reactivity, combined with the previously reported H/D exchange catalyzed by these complexes allows for a one pot, two step reaction using a single catalyst for both H/D exchange and hydrosilylation. Using triethylsilane, [Rh(I(t)Bu)(2)Cl] catalyst, and D(2) gas, de...
abstract the influence of cation?? and anion?? interactions on the strength and nature of n…h hydrogen bond has been investigated by quantum chemical calculations in s-triazine…3hf complex. ab initio calculations were performed at mp2/6-311++g(d,p) level of theory. the natural bond orbital (nbo) analysis and the bader’s quantum theory of atoms in molecules (aim) were also used to elucidate t...
In the title complex, [RhCl(C(44)H(32)OP(2))]·CH(3)OH, the Rh(I) ion is coordinated by a naphthyl group of a partially oxidized 2,2'-bis-(diphenyl-phosphan-yl)-1,1'-binaphthyl (BINAP) ligand in a η(4) mode, one P atom of the diphenyl-phosphanyl group and one Cl atom. The P=O group does not inter-act with the Rh(I) ion but accepts an O-H⋯O hydrogen bond from the methanol solvent mol-ecule.
New hybrid POM based on Lindqvist-type polyoxometalates [M6O19](8-) (M = Nb, Ta) and organometallic fragment {Cp*Rh}(2+) have been isolated and characterized. X-ray quality crystals of K4[(Cp*Rh)2Nb6O19]·20H2O () and Cs4[(Cp*Rh)2Ta6O19]·18H2O () were obtained from solutions with {Cp*Rh} : [M6O19](8-) stoichiometry 2 : 1. The solution behavior of the hybrid polyoxoanions was studied with ESI-MS ...
A well-characterised 14-electron rhodium phosphine complex, [Rh(PiPr3)3][BArF4], which contains a beta-CH agostic interaction, is observed to undergo spontaneous dehydrogenation to afford [Rh(PiPr3)2(PiPr2(C3H5))][BArF4]; calculations on a model system show that while C-H activation is equally accessible from the beta-CH agostic species or an alternative gamma-CH agostic isomer, subsequent beta...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید