The direct synthesis and characterization of the pillared layer indium phosphate Na₄[In₈(HPO₄)₁₄(H₂O)₆]·12(H₂O)

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• 作者：Attfield ; Martin P. ; Cheetham ; Anthony K. ; Natarajan ; Srinivasan
• 关键词：A. Inorganic compounds ; B. Crystal growth ; C. X-ray diffraction
• 刊名：Materials Research Bulletin
• 出版年：2000
• 出版时间：May, 2000
• 年：2000
• 卷：35
• 期：7
• 页码：1007-1015
• 全文大小：298 K

文摘

Na₄[In₈(HPO₄)₁₄(H₂O)₆]·12(H₂O) (trigonal, Pc1, a = 13.8500(2), c = 18.4930(3) Å, V = 3072.12(4) ų, and Z = 2), was prepared directly in its sodium form by hydrothermal methods at 398 K, and its structure solved by single crystal methods. The three-dimensional framework structure consists of a network of InO₆ and InO₅(OH₂) octahedra, and PO₃(OH) tetrahedra forming layers, which are held in position by InO₆ octahedra acting as pillars forming 12-membered ring channels. The extra-framework sodium cations are located at the sides of the 12-rings within this framework structure and are coordinated by framework oxygen atoms and extra-framework water molecules. The structure was solved using room-temperature single-crystal X-ray diffraction data from 1732 observed reflections (I > 3.0σ(I), R = 0.025, and R_w = 0.030).