Synthesis, hydrogen bond interactions and crystal structure elucidation of some stable 2H-imidazolium salts
Keyword(s):
Abstract Reaction of 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene (1) with phthalimide, quinazolinedione, thiophenole and 4-pyridinethiole led to the formation of the hydrogen-bonded salts, imidazolium phthalimide (2), imidazolium quinazolinedione (3), imidazolium thiophenolate (4) and imidazolium 4-pyridinethiolate (5), respectively, in good yield. In crystals of 2, the anion is linked to the imidazolium cation by a C–H···O hydrogen bond, while in 3 and 5 C–H···N hydrogen bonds are observed. In 4, the imidazolium ion is linked to the anion by C–H···S hydrogen bonds. In compounds 2, 3 and 5, the interionic hydrogen bonds are close to linearity, while the interionic hydrogen bond angle in 4 is 148.5(9)°.
2014 ◽
Vol 70
(10)
◽
pp. o1106-o1106
Keyword(s):
2006 ◽
Vol 62
(5)
◽
pp. o1754-o1755
2015 ◽
Vol 71
(9)
◽
pp. o636-o636
Keyword(s):
2016 ◽
Vol 72
(5)
◽
pp. 751-755
◽
2016 ◽
Vol 72
(1)
◽
pp. 60-62
◽
Keyword(s):
2014 ◽
Vol 70
(12)
◽
pp. o1237-o1238
Keyword(s):