¹H/¹⁷O Chemical Shift Waves in Carboxyl-Bridged Hydrogen Bond Networks in Organic Solids.

ABSTRACT: We report solid-state ¹H and ¹⁷O NMR results for four ¹⁷O-labeled organic compounds each containing an extensive carboxyl-bridged hydrogen bond (CBHB) network in the crystal lattice: tetrabutylammonium hydrogen di-[¹⁷O₂]salicylate (1), [¹⁷O₄]quinolinic acid (2), [¹⁷O₄]dinicotinic acid (3), and [¹⁷O₂]Gly/[¹⁷O₂]Gly·HCl cocrystal (4). The ¹H isotropic chemical shifts found for protons involved in different CBHB networks are between 8.2 and 20.5 ppm, which reflect very different hydrogen-bonding environments. Similarly, the ¹⁷O isotropic chemical shifts found for the carboxylate oxygen atoms in CBHB netw

SUBMITTER: Wu G 

PROVIDER: S-EPMC11840671 | biostudies-literature | 2024 May

REPOSITORIES: biostudies-literature