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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1021/la104386s
|2 doi
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|a pubmed24n0689.xml
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|a (DE-627)NLM206553943
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|a (NLM)21395274
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Ran, Xia
|e verfasserin
|4 aut
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|a Solvent-induced helix superstructure in achiral dumbbell-shaped hydrazine derivatives
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|c 2011
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 13.07.2011
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|a Date Revised 21.11.2013
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a We studied hydrogen-bonding assemblies in a series of dumbbell-shaped hydrazine derivatives, namely oxalyl N',N'-bis(3,4-dialkoxybenzoyl)-hydrazide (BFH-n, n = 4, 6, 8, 10) and oxalyl N',N'-dibenzoyl-hydrazide (FH-0). It has been demonstrated that NH-1 protons of BFH-n precipitated from tetrahydrofuran (THF) or dimethylformamide (DMF) were involved in intramolecular H-bonding to form 6-membered rings. Meanwhile, NH-2 protons of BFH-n precipitated from THF formed intermolecular hydrogen bonds with C═O groups of neighboring molecules, while NH-2 protons of BFH-n precipitated from DMF formed intermolecular hydrogen bonds with C═O group of neighboring DMF molecules. C═O, -CH(3), and -CH groups of DMF molecules participated in multiple intermolecular hydrogen bonds with the -N-H and -C═O groups of FH-0 molecules in single-crystals formed in DMF, leading to a double helix morphology with a pitch of 24.2 Å along the c direction. Both left- and right-handed helical micrometer-length ribbons with nonuniform helical pitches were observed in an achiral BFH-10 xerogel precipitated from DMF
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Furans
|2 NLM
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|a Hydrazines
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|a Solvents
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|a hydrazine
|2 NLM
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|a 27RFH0GB4R
|2 NLM
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|a tetrahydrofuran
|2 NLM
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|a 3N8FZZ6PY4
|2 NLM
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|a Dimethylformamide
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|a 8696NH0Y2X
|2 NLM
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| 700 |
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|a Zhang, Peng
|e verfasserin
|4 aut
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|a Qu, Songnan
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Haitao
|e verfasserin
|4 aut
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| 700 |
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|a Bai, Binglian
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Huimin
|e verfasserin
|4 aut
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|a Zhao, Chengxiao
|e verfasserin
|4 aut
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|a Li, Min
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 27(2011), 7 vom: 05. Apr., Seite 3945-51
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:27
|g year:2011
|g number:7
|g day:05
|g month:04
|g pages:3945-51
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|u http://dx.doi.org/10.1021/la104386s
|3 Volltext
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