title: 31P double-quantum solid-state NMR study of phosphoroorganic compounds with (O)P-O-P-(O), (S)P-O-P(S) and (S)P-S-P(O) unit.
abstract: In this work we have tested applicability of the commonly used double quantum recoupling sequence POST-C7 to study of (31)P-(31)P geometrical constraints for phosphoroorganic model compounds with different chemical shift anisotropy (CSA) and distinct molecular dynamics in the crystal lattice. Our results clearly show that even with large CSA, POST-C7 gives good efficiency of (31)P double-quantum excitations. Moreover, large amplitude molecular motion only slightly disturb (31)P build-up curve. Chi(2) error analysis is used for verification of values and orientations of chemical shift tensors (CST) parameters employed for simulation of POST-C7 buildup curves.
authors.affiliation: Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Olejniczak
authors.forename: Paweł
authors.initials: P
authors.lastname: Napora
authors.forename: Jarosław
authors.initials: J
authors.lastname: Gajda
authors.forename: Włodzimierz
authors.initials: W
authors.lastname: Ciesielski
authors.forename: Marek J
authors.initials: MJ
authors.lastname: Potrzebowski
mesh_terms: D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D010755:Organophosphates / Q000737:chemistry*; D010759:Phosphorus Isotopes
chemical_list: D010755:Organophosphates; D010759:Phosphorus Isotopes