Chain Structures in Alkali Metal Borophosphates: Synthesis and Characterization of K3[BP3O9(OH)3] and Rb3[B2P3O11
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- 作者：Bastian Ewald ; Yurii Prots ; Prashanth Menezes ; Srinivasan Natarajan ; Hui Zhang ; and Rü ; diger Kniep
- 刊名：Inorganic Chemistry
- 出版年：2005
- 出版时间：September 5, 2005
- 年：2005
- 卷：44
- 期：18
- 页码：6431 - 6438
- 全文大小：620K
- 年卷期：v.44,no.18(September 5, 2005)
- ISSN：1520-510X
文摘
Two new alkali metal borophosphates, K3[BP3O9(OH)3] and Rb3[B2P3O11(OH)2], were synthesized by applyingsolvothermal techniques using ethanol as solvent. The crystal structures were solved by means of single-crystalX-ray diffraction (K3[BP3O9(OH)3], monoclinic, C2/c (No. 15), a = 2454.6(8) pm, b = 736.3(2) pm, c = 1406.2(4)pm, 
= 118.35(2)
, Z = 8; Rb3[B2P3O11(OH)2], monoclinic, P21/c (No. 14), a = 781.6(2) pm, b = 667.3(2) pm,c = 2424.8(5) pm, = 92.88(1), Z = 4). Both crystal structures comprise borophosphate chain anions. Whilefor the rubidium compound a loop-branched chain motif is found as common for most of the chain anions in alkalimetal borophosphates, the crystal structure of the potassium phase comprises the first open-branched chain withthe highest phosphate content found so far in this group of compounds. Both chain anions are closely related toknown anhydrous or hydrated phases, and the structural relations are discussed in terms of how the presence ofOH groups and hydrogen bonds as well as number, charge, and size of charge balancing cations influence the 3Dstructural arrangement. The anionic entities are classified in terms of general principles of structural systematicsfor borophosphates.
= 118.35(2), Z = 8; Rb3[B2P3O11(OH)2], monoclinic, P21/c (No. 14), a = 781.6(2) pm, b = 667.3(2) pm,c = 2424.8(5) pm, = 92.88(1), Z = 4). Both crystal structures comprise borophosphate chain anions. Whilefor the rubidium compound a loop-branched chain motif is found as common for most of the chain anions in alkalimetal borophosphates, the crystal structure of the potassium phase comprises the first open-branched chain withthe highest phosphate content found so far in this group of compounds. Both chain anions are closely related toknown anhydrous or hydrated phases, and the structural relations are discussed in terms of how the presence ofOH groups and hydrogen bonds as well as number, charge, and size of charge balancing cations influence the 3Dstructural arrangement. The anionic entities are classified in terms of general principles of structural systematicsfor borophosphates.