Structure and Properties of NaBH4·2H2O and NaBH4
Year: 2008
Type: article
Abstract: NaBH4·2H2O and NaBH4 were studied by single‐crystal X‐ray diffraction and vibrational spectroscopy. In NaBH4·2H2O, the BH4– anion has a nearly ideal tetrahedral geometry and is bridged with two Na+ ions through the tetrahedral edges. The structure does not contain classical hydrogen bonds, but reveals strong dihydrogen bonds of 1.77–1.95 Å. Crystal structures and vibrational spectra of NaBr·2H2O and NaBH4·2H2O reveal many similarities. The unit cell volume of NaBH4·2H2O increases linearly with temperature between 200 and 313 K. At 313–315 K, the hydrate decomposes into NaBH4 and H2O, which react to release hydrogen.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)
Authors: Yaroslav Filinchuk, Hans Hagemann
Institutions: European Synchrotron Radiation Facility, University of Geneva
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2104894573