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Conformational studies on phosphorus‐containing macrocycles
Author(s) -
Boese R.,
Boetzel R.,
Hägele G.
Publication year - 1994
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260320706
Subject(s) - chemistry , coupling constant , ring (chemistry) , phosphorus , nmr spectra database , crystallography , nuclear magnetic resonance spectroscopy , phosphorus 31 nmr spectroscopy , flexibility (engineering) , stereochemistry , computational chemistry , spectral line , organic chemistry , physics , statistics , mathematics , particle physics , astronomy
H,H and P,H coupling constants and variable‐temperature 1 H and 13 C NMR spectra and 13 C T 1 values for some macrocyclic dithiophosphonic esters are presented to show that these compounds possess reduced flexibility in comparison with crown ethers. The NMR spectroscopic results are supported by an x‐ray structure which shows a highly strained ring system.