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Two inequivalent protons from 1H NMR spectra of RbH2AsO4 in the paraelectric phase were distinguished using static NMR and MAS NMR. From the 1H spin–lattice relaxation times in the laboratory frame, T1, and rotating frame, T1ρ, of the two crystallographically inequivalent hydrogen sites, i.e., H(1) and H(2), the temperature dependences of T1 and T1ρ for H(1) were related to the reorientational motion...
The mechanisms behind the nonlinear optical (NLO) properties of Li 2 B 4 O 7 are characterized by 7 Li static nuclear magnetic resonance (NMR) and magic-angle spinning (MAS) NMR. Furthermore, the structural nature of 3-coordinate BO 3 and 4-coordinate BO 4 groups is also characterized by the same method. For 7 Li and 11 B, the spin-lattice...
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