Three new lithium, magnesium and calcium boron nitrides, namely Ca6BN5(L),
Mg6BN5(H) and Li3Mg3B2N5(L), were synthesized using a metal nitride-boron n
itride sintering technique at low (L) or high (H) pressures. All these new
compounds are typical metal boron nitride powders and, like previously know
n Mg3BN3, seem to have the N3- anion in their structures. (C) 1999 Elsevier
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