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The structure of lithium trithioarsenite(3-) consists of AsS3 pyramids; all S atoms are non-bridging. Li atoms are involved in LiS4 tetrahedra and LiS3 + 2 distorded trigonal bipyramids. The tetrahedra are linked together via corners. This structure appears to be a new member of the M3AX3 group of compounds.
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SEUNG et al. (1998) studied this question.
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