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(C 5 H 14 N 2 )[Zn 3 (HPO 4 ) 4 ], a New 3D Open‐framework Zincophosphate Synthesized by Hydrothermal Reversible Transformation of (C 5 H 14 N 2 )[Zn 2 (HPO 4 ) 3 ]·H 2 O
Author(s) -
Wiebcke Michael
Publication year - 2007
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.200600250
Subject(s) - monoclinic crystal system , crystallography , hydrothermal circulation , crystal structure , hydrothermal synthesis , materials science , recrystallization (geology) , hydrate , octahedron , single crystal , chemistry , geology , paleontology , organic chemistry , seismology
In the system ZnO/H 3 PO 4 /H 2 O/1,4‐diazacycloheptane (C 5 H 12 N 2 ), a new zincophosphate (ZnPO), (C 5 H 14 N 2 )[Zn 3 (HPO 4 ) 4 ] ( I ), was prepared by hydrothermal transformation (180 °C) of the known ZnPO hydrate (C 5 H 14 N 2 )[Zn 2 (HPO 4 ) 3 ]·H 2 O ( II ). The thermally‐induced transformation is reversible; upon keeping the heterogeneous mixture of I and mother liquor at 80 °C recrystallization of II was observed. Single‐crystal X‐ray crystallography revealed that I possesses a unique three‐dimensional (3D) open‐framework structure built from corner‐linked ZnO 4 and HPO 4 tetrahedra. The (3,4)‐connected framework of I differs considerably from the 3D open‐framework ZnPO structure of II . Crystal data for I : Monoclinic system, space group Cc (No. 9) , Z = 4, a = 9.1389(6), b = 23.627(2), c = 9.3073(6) Å, β = 109.463(7)°, T = 298 K.