Tantalum disulfide, 2H-TaS2, Mr = 245.07, hexagonal, P63/mmc, a = 3.314 (1), c = 12-097 (1) A, V = 115.06 (5) A 3, Z = 2, Dx = 7.073 g cm-3, A(Mo K~) = 0.71073 A, /z = 485.3 cm-1, F(000) = 210, T= 295 K, RF = 0"032 for 210 observed reflections with I> 2.5tr(/). The structure determination confirms the structure known from powder data. Ta is in trigonal-prismatic coordination by S and the Ta--S distances are 2.468 (2) A.
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Meetsma et al. (1990) studied this question.