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Hydrothermal Synthesis, Crystal Structure, and Thermal Stability of Two New Metal Phosphonates with a Pillared Layered Structure
Author(s) -
Zhang Jing,
Li Jing,
Sun ZhenGang,
Zhao Yan,
Zhu YanYu,
Zhang Na,
Liu Lei,
Dalian Xin Lu
Publication year - 2008
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200800257
Subject(s) - thermogravimetric analysis , crystallography , hydrothermal circulation , hydrothermal synthesis , thermal stability , crystal structure , phosphonate , infrared spectroscopy , chemistry , single crystal , metal , octahedron , tetrahedron , elemental analysis , stereochemistry , materials science , inorganic chemistry , chemical engineering , organic chemistry , engineering
Two new metal phosphonates with a 3D pillared layered framework based on N , N′ ‐piperazinebis(methylenephosphonic acid), H 2 O 3 PCH 2 NC 4 H 8 NCH 2 PO 3 H 2 (H 4 L), Sn[O 3 PCH 2 NHC 4 H 8 NHCH 2 PO 3 ] ( 1 ) and Pb 3 (OH) 2 [O 3 PCH 2 NC 4 H 8 NCH 2 PO 3 ] ( 2 ), have been synthesized under hydrothermal conditions and structurally characterized by single‐crystal X‐ray diffraction as well as with infrared spectroscopy, elemental analysis and thermogravimetric analysis. For compound 1 , each ψ‐square pyramidal SnO 4 unit is in turn corner‐shared by four CPO 3 tetrahedral from four different phosphonate ligands to form two‐dimensional inorganic puckered layers in ab planes. In compound 2 , the complicated inorganic layer ( bc planes) is built up of ψ‐PbO 4 N, PbO 6 and CPO 3 polyhedra. The overall structure for two compounds may be described in terms of alternating inorganic infinite layers and organic pillars {CH 2 N(C 2 H 4 ) 2 NCH 2 }, to form a 3D pillared layered structure.