نتایج جستجو برای: dissymmetric dinuclear complexes
تعداد نتایج: 138514 فیلتر نتایج به سال:
In 2009, we reported C-halogen reductive elimination reactions from dinuclear Pd(III) complexes and implicated dinuclear intermediates in Pd(OAc)(2)-catalyzed C-H oxidation chemistry. Herein, we report results of a thorough experimental and theoretical investigation of the mechanism of reductive elimination from such dinuclear Pd(III) complexes, which establish the role of each metal during red...
Novel axially chiral Rh N-heterocyclic carbene complexes were prepared from axially dissymmetric 1,1'-binaphthalenyl-2,2'-diamine and applied in the Rh-catalyzed enantioselective hydrosilylation of methyl ketones. The corresponding sec-alcohols can be obtained in high yields with good to excellent ee.
In an effort to design dinuclear PtII compounds that maintain the target (DNA) binding profile of the trans-oriented dinuclear bifunctional PtII complexes containing aliphatic linker chains but are less susceptible to metabolic decomposition, the new, longchain dinuclear PtII complexes—[{trans-PtCl(dien)}2-μ-(CH2)n] 2+ (n = 7,10,12, dien = diethylenetriamine)—were synthesized. The toxicity of t...
We report the synthesis and activity of new mononuclear and dinuclear gold amide complexes 1-7. The dinuclear complexes 6b and 7 were characterised by single crystal X-ray analysis. We also report solution NMR and freezing point depression experiments to rationalise their behaviour in solution and question the de-ligation process invoked in gold catalysis.
The coordination chemistry of chiral NHC-oxazoline bidentate ligands was investigated with silver(I) and gold(I), yielding stable dinuclear cationic complexes in good yields via N-coordination the oxazoline heterocycle. After full characterization these complexes, reactivity homogeneous catalysis under oxidative conditions studied.
Controlled hydrolysis of donor-substituted titanium-salan complexes led to the formation of well-defined dinuclear complexes. Structure determination by means of X-ray and NMR-studies revealed the presence of a single μ-oxo bridge and one labile alkoxide ligand per titanium center. Concomitant cytotoxicity assays of the isolated dinuclear complexes showed cytotoxicities in the low micro-molar r...
The first metal complexes of 2,5-di(2-pyridyl)thiazolo[5,4-d]thiazole (5) are described. X-Ray crystal structures are reported for the free ligand 5, a dinuclear copper complex 6 and the two diastereoisomers, 7meso and 7rac, of the dinuclear bis(2,2'-bipyridine)ruthenium complex. The two diastereoisomers of 7 and the 4,4'-dimethyl-2,2'-bipyridine analogue 8 are readily separated by cation excha...
Classical and quantum mechanical theories of optical activity are reviewed with particular reference to the coordination compounds of the transition metal ions. The limiting cases of 'the inherently dissymmetric chromophore' and of 'the symmetric chromophore in a chiral molecular environment' are exemplified respectively by a discussion of the non-empirical exciton treatment of the tris-2,2'-bi...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید