Solid state stereochemistry of crown ethers: X-ray crystal structure and 13C NMR studies of the LiNCS complex of 1,4,7,11-tetraoxacyclotetradecane

Autor:	G. P. A. Yap, G. W. Buchanan, A. B. Driega
Rok vydání:	2000
Předmět:	chemistry.chemical_classification Chemistry Stereochemistry Organic Chemistry X-ray chemistry.chemical_element General Chemistry Crystal structure Carbon-13 NMR Catalysis Crystal Crystallography Dipole Lithium Symmetry (geometry) Crown ether
Zdroj:	Canadian Journal of Chemistry. 78:316-321
ISSN:	1480-3291 0008-4042
DOI:	10.1139/v00-008
Popis:	The title complex is asymmetric in the crystal due to the spatial orientation of the NCS function. The space group has been determined to be P21 with a = 9.496(3), b = 8.736(3), c = 9.676(3) Å, β = 117.859(5)°, and Z = 2. The solid state 13C NMR spectrum is consistent with the lack of symmetry in the crystal and there is little evidence for large amplitude motion in the macrocycle as determined from the dipolar dephased spectrum.Key words: macrocyclic crown ether, lithium complex.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c07fb4aa96f6884f66cb7ee9cb9f90bf https://doi.org/10.1139/v00-008 Zobrazit plný text záznamu