Abstract
We have synthesized a new ternary nitride, Ca 3 VN 3 , from the binary nitrides at high temperature. The refined structure was solved in the P 2 1 / m space group with lattice constants a =6.717(2), b =5.064(2), c =6.720(3) A, β =78.88(3)°, Z =2, R =3.2%, and R w =3.7%. The structure is related to the recently reported A 3 M N 3 compounds (D. A. Vennos, M. E. Badding, and F. J. DiSalvo, Inorg. Chem. 29 , 4059, 1990) with sheets of [VN 3 ] 6− trigonal planar units and calcium ions. Ca 3 VN 3 is insulating with V 3+ in the low-spin state, S =0.
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