67 research outputs found
SOLID STATE ELSEVIER Nuclear Magnetic Resonance Solid State Nuclear Magnetic Resonance 4 (1995) 47-51 Phosphorus chemical shift tensors in dithiadiphosphetane disulfides determined by solid-state 31P nuclear magnetic resonance
Abstract The phosphorus chemical shift tensors of two dithiadiphosphetane disulfides, 2,4-bis(4-methoxyphenyl)-1,3-dithia-2,4-diphosphetane-2,4-disulfide (1) and 2,4-bis(methylthio)-1,3-dithia-2,4-diphosphetane-2,4-disulfide (21, have been characterized by solid-state 31P nuclear magnetic resonance (NMR) measurements. The weak homonuclear dipolar interaction between the two 31P nuclei in each of these compounds has a significant influence on the 3*P NMR line shapes of static powder samples. From the weak dipolar splittings it is possible to deduce the orientation of the phosphorus chemical shift tensor. In both compounds, the intermediate components of the phosphorus chemical shift tensors, a,,, were found to be perpendicular to the plane defined by the two phosphorus atoms and the two terminal sulphur atoms in the molecule, S=P . P=S. The smallest shift components, S,,, were found to deviate approximately 14" from the P=S bond direction
A new mechanism for spin-lattice relaxation of heavy nuclei in the solid state: 207Pb relaxation in lead nitrate
A new mechanism for spin-lattice relaxation of heavy nuclei in the solid state: 207Pb relaxation in lead nitrate
Indirect Nuclear Spin−Spin Coupling Tensors in Diatomic Molecules: A Comparison of Results Obtained by Experiment and First Principles Calculations
Microwave Spectroscopy and Nuclear Magnetic Resonance SpectroscopyWhat Is the Connection?
A More Reliable Absolute Shielding Scale for Chlorine:Â Combined Experimental and Theoretical Approach
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