Synthesis, structure, and magnetic properties of Sr{sub 39}Co{sub 12}N{sub 31}
- Cornell Univ., Ithaca, NY (United States)
Single crystals of Sr{sub 39}Co{sub 12}N{sub 31} have been synthesized in liquid sodium from strontium, cobalt, and sodium azide at 1000 C in sealed niobium ampoules. The structure was solved by single-crystal X-ray diffraction (Im{bar 3}m (No. 229), a = 14.910 {angstrom}, Z = 2, R(F) = 6.7%, R{sub w}(F) = 6.3%) with a disordered strontium position. Sr{sub 39}Co{sub 12}N{sub 31} has a unique structure type incorporating cobalt in linear coordination as isolated nitridometalate ions. All cobalt atoms are crystallographically equivalent, existing with a formal mixed valence of Co{sup 1} and Co{sup 11}. The magnetic susceptibility demonstrates antiferromagnetic Curie-Weiss behavior with an effective moment on cobalt of 4.99 {mu}{sub B}, which lies in the range expected for that of high-spin ground states.
- OSTI ID:
- 329115
- Journal Information:
- Journal of Solid State Chemistry, Vol. 141, Issue 1; Other Information: PBD: 15 Nov 1998
- Country of Publication:
- United States
- Language:
- English
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