Solid State Complex Chemistry: Formation, Structure, and Properties of Homoleptic Tetracyanamidogermanates RbRE[Ge(CN2)4] (RE = La, Pr, Nd, Gd)

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• 作者：Markus Kalmutzki ; David Enseling ; John E. C. Wren ; Scott Kroeker ; Victor V. Terskikh ; Thomas J眉stel ; H.-J眉rgen Meyer
• 刊名：Inorganic Chemistry
• 出版年：2013
• 出版时间：November 4, 2013
• 年：2013
• 卷：52
• 期：21
• 页码：12372-12382
• 全文大小：639K
• 年卷期：v.52,no.21(November 4, 2013)
• ISSN：1520-510X

文摘

Tetracyanamidometallates with the general formula RbRE[T(CN₂)₄] (RE = La, Pr, Nd, Gd; T = Si, Ge) were prepared by solid state metathesis reactions starting from stoichiometric mixtures of RECl₃, A₂[TF₆], and Li₂(CN₂). Reactions were studied by differential thermal analysis that showed ignition temperatures between 360 and 390 掳C for the formation of RbGd[T(CN₂)₄] with T = Si and Ge. The powder diffraction patterns of RbRE[Ge(CN₂)₄] were indexed isotypically to the already known RbRE[Si(CN₂)₄] compound. IR spectra of RbLa[Ge(CN₂)₄] were measured and compared with those of RbLa[Si(CN₂)₄]. ⁷³Ge, ⁸⁷Rb, and ¹³⁹La solid state NMR measurements and density functional theory calculations were used to verify the novel homoleptic [Ge(CN₂)₄]^{4鈥?/sup> ion. Luminescence properties of Eu3+, Ce3+, and Tb3+ doped samples are reported.}