A remarkable autofragmentation/rearrangement sequence results in the unprecedented formation of inorganic concave cyclic anion [(NiPS ) ] (structure shown on the right) upon dissolving the potassium salt of the charged mineral polymer [NiPS ] in DMF; the initial complex fluid has a transient anisotropic texture that can be identified by optical microscopy under polarized light. In contrast, the complex fluid that results upon dissolving [PdPS ] is stable up to 323 K as persistent, flexible, charged chains.
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