نتایج جستجو برای: multinuclear nmr
تعداد نتایج: 59408 فیلتر نتایج به سال:
Abstract. The spectroscopic study of pathological calcifications (including kidney stones) is extremely rich and helps to improve the understanding physical chemical processes associated with their formation. While Fourier transform infrared (FTIR) imaging optical/electron microscopies are routine techniques in hospitals, there has been a dearth solid-state NMR studies introduced into this area...
By exploring the reactivity of sodium butyl-magnesiate (1) supported by the bulky chelating silyl(bisamido) ligand {Ph2Si(NAr*)2}(2-) (Ar* = 2,6-iPr2-C6H3) towards Quinoxaline (Qx), the ability of this bimetallic system to effectively promote SET processes has been disclosed. Thus 1 executes the single-electron reduction of Qx affording complex (2) whose structure in the solid state contains tw...
Three new N-heterocyclic-silazane compounds, 1a-c, were prepared and employed as bidentate ligands to ruthenium, resulting in a series of [Ru(H){(κ-Si,N-(SiMe2-N-heterocycle)}3] complexes (3a-c) featuring the same RuSi3H motif. Detailed structural characterization of the RuSi3H complexes with X-ray diffraction, and in the case of triazabicyclo complex [Ru(H){κ-Si,N-(SiMe2)(C7H12N3)}3] (3a), neu...
New heterometallic hydride complexes that involve the addition of {Mg−H} and {Zn−H} bonds to group 10 transition metals (Pd, Pt) are reported. The side-on coordination a single Pd forms well-defined σ-complex. In contrast, three or Pt results in formation planar with subtly different geometries. We compare their structures through experiment (X-ray diffraction, neutron multinuclear NMR), comput...
The crystal structures of three polymorphs Rb3ScF6 have been determined through a combination synchrotron, laboratory X-ray, and neutron powder diffraction, electron multinuclear high-field solid-state NMR studies. room temperature (RT; α) medium-temperature (β) are tetragonal, with space groups I41/a (Z = 80) I4/m 10) lattice parameters 20.2561(4) A, c 36.5160(0) A 14.4093(2) 9.2015(1) at RT 1...
this work is presented in five parts. in the first part preparation of the starting complex [pt(c^n)cl(dmso)], 1, in which c^n = n(1),c(2?)-chelated, deprotonated 2-phenylpyridine, and dmso = dimethylsulfoxide, and its reaction with 1 equiv of the biphosphine ligands bis(diphenylphosphino)amine, dppa, or bis(diphenylphosphino)methane, dppm, to give the complex [pt(c^n)cl(dppa)], 2, or [pt(c^n)c...
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