Nuclear Magnetic Relaxation Study of the Organic-Inorganic Hybrid Systems (CnH2n+1NH3)2SnCl6

Abstract

The 1H NMR spin-lattice relaxation in a series of the organic-inorganic hybrid systems (n-CnH2n+1NH3)2SnCl6 (n=10, 12, 14) undergoingtwo successive phase transitions was studied. A discontinuity characteristic of a first order phase transition was observed at the high-temperature conformational transition. Besides, the spin-lattice relaxation rate below the conformational transition temperature was well fitted by four types of molecular motions, from which the chain-length dependence of the activation energies of the molecular groups was obtained.