نتایج جستجو برای: alkaline earth metals
تعداد نتایج: 193458 فیلتر نتایج به سال:
The cluster compounds (NH4)4[Nb6Cl12(N3)6](H2O)2 (1) and Na1.15(3)La0.85(3)[Nb6Cl12(N3)6](H2O)13(1) (2) have been synthesized by the reaction of an aqueous solution of Nb6Cl14 with an excess of NaN3 and the respective chloride salts. 1 crystallizes isotypically to the other alkali metal cluster azides in the space group P1̄ (no. 2) with the lattice parameters a = 908.97(8), b = 932.78(8), c = 10...
A physical model of selective "ion binding" in the L-type calcium channel is constructed, and consequences of the model are compared with experimental data. This reduced model treats only ions and the carboxylate oxygens of the EEEE locus explicitly and restricts interactions to hard-core repulsion and ion-ion and ion-dielectric electrostatic forces. The structural atoms provide a flexible envi...
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