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Structural Patterns and Dimensionality in Magnesium Borophosphates: The Crystal Structures of Mg 2 (H 2 O)[BP 3 O 9 (OH) 4 ] and Mg(H 2 O) 2 [B 2 P 2 O 8 (OH) 2 ]·H 2 O
Author(s) -
Ewald Bastian,
Öztan Yigit,
Prots Yurii,
Kniep Rüdiger
Publication year - 2005
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.200500061
Subject(s) - orthorhombic crystal system , monoclinic crystal system , crystallography , octahedron , acentric factor , crystal structure , magnesium , chemistry , hydrothermal circulation , geology , organic chemistry , seismology
Hydrothermal investigations in the system MgO/B 2 O 3 /P 2 O 5 (/H 2 O) yielded two new magnesium borophosphates, Mg 2 (H 2 O)[BP 3 O 9 (OH) 4 ] and Mg(H 2 O) 2 [B 2 P 2 O 8 (OH) 2 ]·H 2 O. The crystal structures were solved by means of single crystal X‐ray diffraction. While the acentric crystal structure of Mg 2 (H 2 O)[BP 3 O 9 (OH) 4 ] (orthorhombic, P 2 1 2 1 2 1 (No. 19), a = 709.44(5) pm, b = 859.70(4) pm, c = 1635.1(1) pm, V = 997.3(3) × 10 6 pm 3 , Z = 4) contains 1D infinite chains of magnesium coordination octahedra interconnected by a borophosphate tetramer, Mg(H 2 O) 2 [B 2 P 2 O 8 (OH) 2 ]·H 2 O (monoclinic, P 2 1 /c (No. 14), a = 776.04(5) pm, b = 1464.26(9) pm, c = 824.10(4) pm, β = 90.25(1)°, V = 936.44(9) × 10 6 pm 3 , Z = 4) represents the first layered borophosphate with 6 3 net topology. The structures are discussed and classified in terms of structural systematics.