Simultaneous frequency-selective solid-state NMR analysis of internuclear distances and through-bond connectivities in the presence of quadrupolar nuclei

In solid-state NMR spectroscopy, the potential of rotational echo double resonance (REDOR) for deriving distance information is well documented in the literature for isolated pairs of spin-1/2 nuclei. Several extensions of REDOR to more complex spin-1/2 systems have been proposed. Herein, we investigate the feasibility of the frequency-selective REDOR approach to a multispin system SIn, where S spin is a quadrupolar nucleus. In addition, we describe the effect of scalar couplings JSI on these measurements and use this result to study through-bond connectivities between 27Al and 31P in VPI5.