Hydrogen Bonding Dependent Mesoscale Framework in Crystalline Ln(H2O)9(CF3SO3)3
作者： Congting Sun , Xiaoyan Chen , Dongfeng Xue
关键词: Hydrogen bond 、 Spectral line 、 Crystallography 、 Bond length 、 Intermolecular force 、 Crystallization 、 Aqueous solution 、 Molecular geometry 、 Molecule 、 Chemistry
摘要: Structurally, hydrogen bonding is identified as a key factor to domain the construction of crystallographic frame during crystallization Ln(H2O)9(CF3SO3)3 (Ln = La–Lu) system. In situ Raman spectroscopy used capture dependent mesoscale frameworks that are formed in aqueous solution by continuously collecting spectra structural fragments. The spectral characteristics show isolated Ln(H2O)93+ tricapped trigonal prisms cannot exist solution. With concentration solution, hydrated Ln3+ and CF3SO3– tend share common H2O molecules, new will be built surrounding Ln3+. Especially, for Nd, Eu, Yb, Lu system, Ln(H2O)n(CF3SO3)3 (n 8–9) clusters instead Under guiding intermolecular bonds, both bond lengths angles Ln–O may regulated, leading initial formation L...
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