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231223s2004 xx ||||| 00| ||eng c |
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|a (DE-627)NLM148274870
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|a (NLM)15137048
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Schilf, Wojciech
|e verfasserin
|4 aut
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| 245 |
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|a Investigations of intramolecular hydrogen bonding in three types of Schiff bases by 2H and 3H NMR isotope effects
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|c 2004
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 30.03.2005
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|a Date Revised 10.12.2019
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|a published: Print
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|a Citation Status MEDLINE
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| 520 |
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|a Copyright 2004 John Wiley & Sons, Ltd.
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|a Hydrogen bonding within the structures of three Schiff bases (1-3), obtained by condensation of 4-methoxy-, 5-methoxy- and 4,6-dimethoxysalicylaldehyde with methylamine, was investigated by measuring deuterium and tritium NMR isotope effects. The primary deuterium and tritium isotope effects (delta(XH)-delta(XD/T)) and secondary one-bond nitrogen deuterium effect appear to be very useful parameters for defining the character of intramolecular hydrogen bonds. The tritium isotope effects were also determined for nitrogen-hydrogen one-bond coupling constants for both 4-methoxy and 4,6-dimethoxy derivatives. These parameters are seen to be highly sensitive to hydrogen bond characteristics and can be used to distinguish localized and tautomeric hydrogen bonds
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|a Comparative Study
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|a Evaluation Study
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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| 650 |
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|a Isotopes
|2 NLM
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| 650 |
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|a Schiff Bases
|2 NLM
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| 650 |
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|a Tritium
|2 NLM
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| 650 |
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|a 10028-17-8
|2 NLM
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| 650 |
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|a Deuterium
|2 NLM
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| 650 |
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|a AR09D82C7G
|2 NLM
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| 700 |
1 |
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|a Bloxsidge, James P
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jones, John R
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lu, Shui-Yu
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Magnetic resonance in chemistry : MRC
|d 1985
|g 42(2004), 6 vom: 07. Juni, Seite 556-60
|w (DE-627)NLM098179667
|x 1097-458X
|7 nnns
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| 773 |
1 |
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|g volume:42
|g year:2004
|g number:6
|g day:07
|g month:06
|g pages:556-60
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|d 42
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|h 556-60
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