نتایج جستجو برای: cuii complex
تعداد نتایج: 784079 فیلتر نتایج به سال:
Hybrid organic-inorganic coordination assemblies are synthesized using modified aminocarboxylic acid ligands as the structure-directing agents. The synthetic approach results in two novel dinuclear copper(II) complexes, K2[CuII(hnida)]2.2H2O (1) and K4[CuII(chnida)]2.4H2O.4MeOH (2) that assemble in the presence of suitable counterions into a densely packed hexagonal array or an open-framework s...
فرایند باز شدن حلقه با استفاده از واکنش افزایش نوکلئوفیل هایoh، nh2 وcn به +[cuii(op)] توسط روش b3lyp انجام شده است. برای بهینه سازی ساختارها ازمجموعه پایه ی 6-31g* استفاده شده است. حضور اتم ( cu(ii باعث افزایش بار مثبت روی اتم های کربن مجاور به اتم اکسیژن در +[cuii(op)] نسبت به 5-اکساپورفیرین می شود. با حمله ی نوکلئوفیلی به این اتم کربن ابتدا یک حدواسط تشکیل می شود که با عبور از یک حالت گذارمن...
The interpeptidic CuII exchange rate constants were measured for two Cu amyloid-? complexes, Cu(A?1–16) and Cu(A?1–28), to fluorescent peptides GHW DAHW using a quantitative tryptophan fluorescence quenching methodology. second-order determined at three pH values (6.8, 7.4, 8.7) important the Cu(A?) coordination components Cu(A?)I Cu(A?)II. constant is approximately 104 M–1 s–1 but varies in ma...
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...
Sr2Cu3O4Cl2 has CuI and CuII subsystems, forming interpenetrating S=1/2 square lattice Heisenberg antiferromagnets. The classical ground state is degenerate, due to frustration of the intersubsystem interactions. Magnetic neutron scattering experiments show that quantum fluctuations cause a two dimensional Ising ordering of the CuII's, lifting the degeneracy, and a dramatic increase of the CuI ...
The reaction of copper (II) nitrate with pyridine-2,6-dicarboxylic acid, (pydcH2) and 2,2'-bipyridine (2,2'-bipy) led to the formation of the title compound, [Cu(C7H4NO4)(C10H8N2)(H2O)]NO3.H2O, or [Cu(pydcH)(2,2'-bipy)(H2O)]NO3.H2O. The crystal system of the complex is triclinic with space group P and two molecules per unit cell. The unit cell parameters are: a = 7.0438 (6) Å, b = 11.3215 (10) ...
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