2010 (16) January (16) Heat engine cycle reversible-irreversible Carnot Cycle Calcium chloride

Complex compound [Fe (3-pp) 3] [X] 2.2H2O, where 3-pp = 2- (pirazol-3-yl) pyridine, absorb X = I, Br, NO3, and CF3SO3, and X2 = [Fe ( CN) 5 (NO)], have been isolated and characterized in terms of the magnetic properties, Mössbauer spectra, and electronic spectra. All the salt dihydrate obtained from the preparation with water solvent maroon, and heating 110 - 1600C resulted in the disintegration of these salts except for the triflate salt which provides complete dehydration be without hydrate in yellow. At room temperature, the magnetic moment of salt dihydrate is slightly higher than the price of the low-spin pure (~ 2.0 to 2.5 BM). The magnetic absorb moment changes slowly, parallel to changes in temperature of ~ 90 - 363K, and these changes may be associated with the occurrence of the transition state spin singlet (1A1) quintet (5T2) is continuous on the type of iron (II). For triflate salt without hydrate, the spin state transition takes place dramatically that indicates the type of discontinuous with accompanying symptoms of hysteresis (Tc = 229K , Tc = 241K; ΔTc = 12K). Triflate salt without absorb hydrate also shows that yellow thermochromic properties at room temperature and dark brown red at low temperatures. more can be downloaded HERE
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