Single Crystals of Alkali-aromatic Ion Pairs
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Structure of Alkali Biphenyl Ion Pairs in Solution and in the Solid State
NMR experiments on sodium biphenyl (NaBp), potassium biphenyl (KBp) and ribidium biphenyl (RbBp), dissolved in various solvents are summarized with emphasis on the structural information which can be obtained from such experiments. The crystal structures of NaBp.2Tg (Tg = triglyme), KBp.2Ttg and RbBp.2Ttg (Ttg tetraglyme) are discussed, in relation to the NMR results obtained for these systems ...
متن کاملDissolution and nucleation phenomena of salts in water. Molecular dynamic approaches and supporting solution X-ray diffraction measurements
Molecular dynamics (MD) simulations have been demonstrated to elucidate the dissolution and nucleation phenomena at a molecular level for a variety of alkali halide salts in water at 25 "C. Within 12 to 20 ps anions in the LiCI, NaCl and CsF crystals have dissolved, but dissolution of cations has not been observed within the same time period. For KCI, NaF, and KF crystals which have cations and...
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In this research, the vertical Bridgman method has used to perform the single crystal growth of cesium iodide alkali halide. To this purpose, a vertical cylindrical furnace equipped with electric elements with five different thermal regions has been designed and constructed. The temperature gradient of the furnace can be controlled up to 1000○C with 0.1○C accuracy. Several cesium iodide sample ...
متن کاملCrossed Molecular Beam Study of Collision-induced Dissociation of Alkali Halides*
Recent studies by Berry et al. [1,2] of collisional dissociation of alkali halides by shockheated argon have shown that, in vibrationallyequilibrated gases, some alkali halides (all cesium, rubidium and potassium salts except RbI and KI) dissociate completely to ion pairs, although dissociation to neutral atoms requires less energy. An e_xpression for the branching ratio for the different disso...
متن کاملF-CENTER ELECTRON QUANTIZATION IN ALKALI HALIDE CRYSTALS Background Alkali halides and alkaline earth halides are strongly ionic compounds
Alkali halides and alkaline earth halides are strongly ionic compounds that solidify as crystals. The name for the alkali elements (Li, Na, K, Rb and Cs) comes from the Arabic word alqili (ashes of the salt-wort plant that was once used as a source of sodium and potassium for making glass from sand). The name for the halogen elements (F, Cl, Br, I—and the rare radioactive element astatine) come...
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