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Compound Co2Nb2Te4 obtained by heating the elements Co2 Nb anc Te at 1000℃ in a evacuated silica tube, crystallizes in nonoclinic, space group P21/c with a = 8.197(2), b = 6,258(1), c = 7.816(3) A,β=118.48(2)° Z=2, X-ray structural determination shows non-molecular 2-dimensional character of its crystal structure. In the structural unit, two Co and two Nb atoms form a rhombic plane with four Co-Nb bonds (average 2.744A) and one Co-Co bond (2.514A) and there exists no Nb-Nb interaction. The distorted tetrahedral coordination of each metal atom is completed by four Te atoms. The average distances are 2.799A for Nb-Te bonds and 2.545A for Co-Te bonds.
Compound Co2Nb2Te4 obtained by heating the elements Co2 Nb anc Te at 1000 ° C in an evacuated silica tube, crystallizes in nonoclinic, space group P21 / c with a = 8.197 (2), b = 6,258 (1), c = 7.816 A, β = 118.48 (2) ° Z = 2 X-ray structural determination shows non-molecular 2-dimensional character of its crystal structure. In the structural unit, two Co and two Nb atoms form a rhombic plane with four Co- The distorted tetrahedral coordination of each metal atom is completed by four Te atoms. The average distances are 2.799A for Nb-Nb bonds (average 2.744A) and one Co-Co bond (2.514A) Te bonds and 2.545A for Co-Te bonds.