title: Heteronuclear proton double quantum-carbon single quantum scalar correlation in solids.
abstract: A new NMR experiment that exploits the advantages of proton double quantum (DQ) NMR through a proton DQ-carbon single quantum (SQ) correlation experiment in the solid state is proposed. Analogous to the previously proposed 2D (1)H (DQ)-(13)C refocused INEPT experiment (Webber et al., 2010), the correlation between (1)H and (13)C is achieved through scalar coupling evolution, while the double quantum coherence among protons is generated through dipolar couplings. However, the new experiment relies on (13)C transverse coherence for scalar transfer. The new experiment dubbed MAS-J-(1)H (DQ)-(13)C-HMQC, is particularly suited for unlabeled molecules and can provide higher sensitivity than its INEPT counterpart. The experiment is applied to four different samples.
authors.affiliation: NMR Research Centre, Indian Institute of Science, Bangalore 560012, India; Department of Physics, Indian Institute of Science, Bangalore 560012, India.
authors.forename: Y
authors.initials: Y
authors.lastname: Jayasubba Reddy
authors.affiliation: NMR Research Centre, Indian Institute of Science, Bangalore 560012, India. Electronic address: vipin.agarwal@nmr.phys.chem.ethz.ch.
authors.forename: Vipin
authors.initials: V
authors.lastname: Agarwal
authors.affiliation: Centre de RMN à Très Hauts Champs, Institut des Sciences Analytiques (CNRS/ENS Lyon/UCB Lyon 1), Université de Lyon, 69100 Villeurbanne, France.
authors.forename: Anne
authors.initials: A
authors.lastname: Lesage
authors.affiliation: Centre de RMN à Très Hauts Champs, Institut des Sciences Analytiques (CNRS/ENS Lyon/UCB Lyon 1), Université de Lyon, 69100 Villeurbanne, France.
authors.forename: Lyndon
authors.initials: L
authors.lastname: Emsley
authors.affiliation: NMR Research Centre, Indian Institute of Science, Bangalore 560012, India. Electronic address: kvr@nrc.iisc.ernet.in.
authors.forename: K V
authors.initials: KV
authors.lastname: Ramanathan
keywords: Heteronuclear correlation; MAS-J-HMQC; Proton double-quantum spectroscopy; Solid state NMR