Synthesis of new transition metal nitrides, MWN2 (M≡Mn, Co, Ni)

Subramanya Herle, P. ; Vasanthacharya, N. Y. ; Hegde, M. S. ; Gopalakrishnan, J. (1995) Synthesis of new transition metal nitrides, MWN2 (M≡Mn, Co, Ni) Journal of Alloys and Compounds, 217 (1). pp. 22-24. ISSN 0925-8388

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We report the synthesis of ternary transition metal nitrides of the formula MWN2 for M≡Mn, Co, Ni by reaction of the corresponding MWO4 with NH3 gas at 600-700 °C. MnWN2 is isostructural with the already-known FeWN2, crystallizing in a hexagonal structure (a=2.901(2), B=16.48(5) Å) related to LiMoN2, CoWN2 and NiWN2 (which are isostructural amongst themselves) adopt a different hexagonal structure with a smaller c parameter. While the Mn and Fe nitrides are semiconducting, the Co and Ni nitrides are semimetallic.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Transition Metal Nitrides; Semimetallics; Semiconductors
ID Code:15787
Deposited On:13 Nov 2010 12:33
Last Modified:02 Jun 2011 11:49

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