Nuclear magnetic resonance in hydrates of sodium tetraborates

Dharmatti, S. S. ; Iyer, S. A. ; Vijayaraghavan, R. (1962) Nuclear magnetic resonance in hydrates of sodium tetraborates Journal of the Physical Society of Japan, 17 . pp. 1736-1739. ISSN 0031-9015

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Official URL: http://jpsj.ipap.jp/link?JPSJ/17/1736/

Related URL: http://dx.doi.org/10.1143/JPSJ.17.1736

Abstract

The proton resonance in borax agrees with the structure proposed by Morimoto. The lineshape in Na2B4O7. 5H2O can be accounted for by writing the molecular formula as Na2B4O6(OH)2.4H2O. In lower hydrates, protons do not exist as in water molecules and an amorphous structure is proposed. Na23 resonance confirms this view. B11 resonance suggests that there exist two types of boron atoms in these borates-one with trigonal and other with tetrahedral co-ordination.

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