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The High‐Pressure Nickel Borate Hydrate Ni 3 B 18 O 28 (OH) 4 ·H 2 O
Author(s) -
Schmitt Martin K.,
Janka Oliver,
Pöttgen Rainer,
Wurst Klaus,
Huppertz Hubert
Publication year - 2017
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201700464
Subject(s) - chemistry , hydrate , boron , nickel , raman spectroscopy , lattice constant , crystallography , crystal structure , thermogravimetric analysis , x ray crystallography , magnetic moment , diffraction , analytical chemistry (journal) , space group , infrared spectroscopy , powder diffraction , single crystal , physics , condensed matter physics , organic chemistry , chromatography , optics
A high‐pressure/high‐temperature experiment at 5 GPa/973 K revealed the existence of a new nickel borate hydrate. The crystal structure of Ni 3 B 18 O 28 (OH) 4 · H 2 O was elucidated through X‐ray single‐crystal diffraction. The compound crystallizes in the hexagonal space group P 6 2 m (no. 189) with the lattice parameters a = 8.2599(4) Å, c = 7.6963(4) Å, and V = 454.74(5) Å 3 . X‐ray powder diffraction, IR and Raman spectroscopy, thermogravimetric analysis (TGA), and magnetic measurements were used to characterize Ni 3 B 18 O 28 (OH) 4 · H 2 O. The effective magnetic moment and the Weiss constant were calculated to be µ eff = 3.20(1) µ B and θ P = –5.3(1) K, respectively.