6533b82cfe1ef96bd128ebc2

RESEARCH PRODUCT

Crystal structure of 3-(tri-phenyl-phosphoranyl-idene)-2,5-di-hydro-furan-2,5-dione tetra-hydro-furan monosolvate.

Daut R. IslamovVasili MiluykovPeter LönneckeElena OshchepkovaAlmaz Zagidullin

subject

crystal structure02 engineering and technologyCrystal structure010403 inorganic & nuclear chemistryRing (chemistry)01 natural sciencesCrystalchemistry.chemical_compoundFuranpseudopolymorphGeneral Materials ScienceCrystallographybiologytetrahydrofuran solvateHydrogen bondSuccinic anhydrideGeneral Chemistry021001 nanoscience & nanotechnologyCondensed Matter Physicsbiology.organism_classification0104 chemical sciencesCrystallographychemistryQD901-999Tetra0210 nano-technologyylidDerivative (chemistry)

description

The title pseudo-polymorph of 3-(triphenylphosphoranylidene)-2,5-dihydrofuran-2,5-dione crystallizes with a tetrahydrofuran solvent molecule, viz. C22H17O3P·C4H8O. The succinic anhydride ring is approximately planar (r.m.s. deviation = 0.032 Å). The tetrahydrofuran molecule is disordered over two orientations about a pseudo-twofold axis with refined occupancy ratio 0.718 (4):0.282 (4). In the crystal, C—H...O hydrogen bonds link molecules of the dihydrofuran-2,5-dione derivative into chains parallel to the b axis and arranged into layers stacked along [100] alternating with hydrogen-bonded tetrahydrofuran layers.

10.1107/s2056989018011775https://pubmed.ncbi.nlm.nih.gov/30225128