【摘 要】
：
Single-crystal X-ray structural analysis of K5Na5H3[Nd(α-SiW11O39)2]·6H2O(triclinic, space group P1-, a = 13.7738(10), b = 19.722(2), c = 20.6647(15) (A), α
【机 构】
：
Basic Experiment Teaching Center,Institute of Molecular and Crystal Engineering
论文部分内容阅读
Single-crystal X-ray structural analysis of K5Na5H3[Nd(α-SiW11O39)2]·6H2O(triclinic, space group P1-, a = 13.7738(10), b = 19.722(2), c = 20.6647(15) (A), α = 111.0090(10), β =105.1740(10), γ = 98-6870(10)°, Z = 2, V = 4867.2(8), Mr = 5914.40, Dc = 4.026, μ = 26.754 mm-1,F(000) = 5076, R = 0.0750 and wR = 0.2077) reveals that two [α-SiW11O39]8- moieties are connected through one Nd atom which is in a square antiprismatic coordination environment by eight oxygen atoms from two [α-SiW11O391]8- moieties. The Nd(Ⅲ) ion is substituted for a [WO]4+unit in the "cap" region of the tungsten-oxygen framework of the parent Keggin ion. Disordered Na+cations and water molecules reside outside these channels, leaving empty pores with an intersecting slot (13 (A) × 10 (A)).
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