Assigning powders to crystal structures by high-resolution H-1-H-1 double quantum and H-1-C-13 J-INEPT solid-state NMR spectroscopy and first principles computation. A case study of penicillin G

Mifsud, NicolasElena, BenedictePickard, Chris J.Lesage, AnneEmsley, Lyndon2015-01-082015-01-082015-01-08200610.1039/b605227dhttps://infoscience.epfl.ch/handle/20.500.14299/110077WOS:000239762000009We show how powder samples at natural isotopic abundance can be assigned to crystal structures by using high-resolution proton and carbon-13 solid-state NMR spectra in combination with first principles calculations. Homonuclear proton double-quantum spectra in combination with through-bond proton-carbon HSQC spectra are used to assign the NMR spectra. We then show that the proton chemical shifts can be included in the process of assigning the spectra to a crystal structure using first principles calculations. The method is demonstrated on the K salt of penicillin G.Assigning powders to crystal structures by high-resolution H-1-H-1 double quantum and H-1-C-13 J-INEPT solid-state NMR spectroscopy and first principles computation. A case study of penicillin Gtext::journal::journal article::research article