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Investigation of Cation−Anion Interactions in 2‐Propanol Solutions of Sodium Alkoxides and Thiolates by 23 Na‐NMR Spectroscopy
Author(s) -
Bagno Alessandro,
Montanari Stefano,
Paradisi Cristina,
Scorrano Gianfranco
Publication year - 2000
Publication title -
european journal of organic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 1434-193X
DOI - 10.1002/(sici)1099-0690(200005)2000:10<1953::aid-ejoc1953>3.0.co;2-q
Subject(s) - chemistry , delocalized electron , salt (chemistry) , inorganic chemistry , nuclear magnetic resonance spectroscopy , sodium salt , sodium , ion , spectroscopy , thiol , propanol , medicinal chemistry , organic chemistry , physics , quantum mechanics , methanol
Cation−anion interactions in 2‐propanol solutions of sodium salts NaY (Y = MeS, i PrS, t BuS, i PrO, SCN, ClO 4 , Ph 4 B) have been studied by 23 Na‐NMR spectroscopy. The analysis involved measurements of chemical shift and T 1 as a function of salt concentration in both the absence and presence of the Na + ‐complexing agent 18‐crown‐6. The results indicate that the interactions of Na + with alkoxides and thiol anions are very different from those with charge‐delocalized anions (SCN − , ClO 4 − , Ph 4 B − ), and that the degree of association in NaSR salts is greater for R = t Bu than for R = Me.