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Presents the results of a study on eatena-Poly[[diaquamanganese(II)-di-Μ-1,1,3,3-tetracyano-2-ethoxypropenido-κ[sup4]N[¹]:N[³].

A number of layered conducting BEDT-TTF, bis(ethylenedithio)tetrathiafulvalene, salts with heavily fluorinated organosulfonate anions have been prepared and characterized. Of particular interest are the salts containing SF5RSO3− anions, where R is a partially fluorinated aliphatic backbone. While structurally similar —the β″ packing type predominates—the ground state of these salts varies from superconducting in the case of β″-(BEDT-TTF)2SF5CH2CF2SO3 to insulating. Many of the salts with insulating ground states are metallic at room temperature, but charge localization and disproportionation over crystallographically non-equivalent sites occurs at low temperature. The organosulfonate group exhibits a propensity to bind to lithium ions, thus ternary salts incorporating Li+ into the complex anion layer are often found. The fluorophilic effect in organofluorine compounds may be exploited to form salts where the conducting BEDT-TTF layers are separated by extremely bulky anion bilayers. The crystal structure of one such system, (BEDT-TTF)3[(CF3)2CFC2H4SO3]4(H5O2)2, is described here. [Copyright &y& Elsevier]

Focuses on a magnetization study which examined field and temperature dependence of vortex pinning of organic single crystal superconductors with the field H parallel to the axis perpendicular to the conducting plane. Illustration of an overlay of the magnetization as a function of field at different temperatures; Description of the normalized relaxation rate as a function of field; Graph of irreversibility field as a function of temperature.