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Complex Fluids Based on the Flexible One-Dimensional Mineral Polymers [K(MPS4 )]∞ (M=Ni, Pd): Autofragmentation to
Julien Sayettat1, Lucy M Bull1, Jean-Christophe P Gabriel1
1Institut des Matériaux de Nantes, UMR 6502 CNRS-Université de Nantes, BP 32229, 44322 Nantes (France), Fax: (+33) 240-373-995.
Abstract:
A remarkable autofragmentation/rearrangement sequence results in the unprecedented formation of inorganic concave cyclic anion [(NiPS4 )3 ]3- (structure shown on the right) upon dissolving the potassium salt of the charged mineral polymer 1∞ [NiPS4 ]- 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 1∞ [PdPS4 ]- is stable up to 323 K as persistent, flexible, charged chains.
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