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Anion‐Induced Urea Deprotonation [PDF]
Chemistry – A European Journal, 2005 AbstractThe urea‐based receptor 1 (1‐(7‐nitrobenzo[1,2,5]oxadiazol‐4‐yl)‐3‐(4‐nitrophenyl)urea, LH), interacts with X− ions in MeCN, according to two consecutive steps: 1) formation of a hydrogen‐bond complex [LH⋅⋅⋅X]−; 2) deprotonation of LH to give L− and [HX2]−, as shown by spectrophotometric and 1H NMR titration experiments.
BOIOCCHI, MASSIMO +5 more
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Deprotonation of Calixarenes in Acetonitrile
The Journal of Organic Chemistry, 2005[Structure: see text]. The pKa values for calixarenes in MeCN have been determined by selective titration with bases using a spectroscopic method. These values are as follows: calix[4]arene pKa(1) = 19.06 +/- 0.22, pKa(2) > 33; calix[6]arene pKa(1) = 15.59 +/- 0.06, pKa(2) = 23.85 +/- 0.35, pKa(3) > 33; calix[8]arene pKa(1) = 17.20 +/- 0.20, pKa(2 ...
Cunningham, ID, Woolfall, M
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Deprotonation of Lithiated Benzenes
The Journal of Organic Chemistry, 2004The deprotonation energies of all possible lithiobenzenes (C(6)Li(n)H(6-n), n = 0-5) were computed at B3LYP/6-311+G(d,p). Based on natural population analysis, the conjugate bases can be thought of as salts between a polyanionic phenyl core and associated lithium cations.
Steven M, Bachrach, Adam C, Chamberlin
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Deprotonation of a Hydridoborate Anion
Angewandte Chemie International Edition, 2017AbstractThe first deprotonation of a borohydride anion was achieved by treatment of [BH(CN)3]− with strong non‐nucleophilic bases, which resulted in the formation of alkali‐metal salts of the tricyanoborate dianion B(CN)32− in up to 97 % yield and 99.5 % purity. [BH(CN)3]− is less acidic than (Me3Si)2NH but a stronger acid than iPr2NH.
Johannes Landmann +8 more
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Deprotonation of Organogermanium and Organotin Trihydrides
Inorganic Chemistry, 2019Terphenyltin and terphenylgermanium trihydrides were deprotonated in reaction with strong bases, such as LiMe, LDA, or KBn. In the solid state, the Li salts of the germate anion 4 and 4a exhibit a Li-Ge contact. In the Li salt of the dihydridostannate anion 6a, the Li cation is not coordinated at the tin atom instead an interaction of the Li cation ...
Jakob-Jonathan Maudrich +8 more
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Photoelectron spectroscopy of deprotonated benzonitrile [PDF]
The Journal of Chemical PhysicsThe recent discovery of cyano-substituted aromatic and two-ring polycyclic aromatic hydrocarbon molecules in Taurus Molecular Cloud-1 has prompted questions on how the electronic structure and excited-state dynamics of these molecules are linked with their existence and abundance.
Eleanor K. Ashworth, James N. Bull
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Deprotonation and protonation of hydroxyphenanthroperylenes
Monatshefte f�r Chemie Chemical Monthly, 1992Ground and excited state deprotonation and protonationpK a values of hydroxyanthraquinones, hydroxyanthrones, hydroxyphenanthroperylenes, and the natural pigments hypericin and pseudohypericin were determined by means of spectrophotometric titrations and Forster cycle calculations.
Heinz Falk +2 more
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Theoretical Study of Deprotonation of Cyclopropabenzenes
2003-
Maksić, Mirjana +2 more
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