The Effect of Local Crystalline Environment on Hydrogen Atom Behavior in Molecular Complexes of a Proton Sponge

The Effect of Local Crystalline Environment on Hydrogen Atom Behavior in Molecular Complexes of a Proton Sponge
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局部晶体环境对质子海绵分子配合物中氢原子行为的影响

DOI:
10.1021/acs.cgd.5b01788
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发表时间:
2016
影响因子:
3.8
通讯作者:
Jones A
Jones A
中科院分区:
化学2区
文献类型:
--
作者:
Jones A

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利用单晶中子衍射研究了质子海绵DMAN与不同有机酸的五种分子复合物的氢键(HB)网络中的质子行为。复合物以2:1(酸:DMAN)或1:1化学计量比形成,并且含有共同的结构基序。所有这些都显示出质子从酸转移到DMAN,形成DMANH+部分和氢键酸二聚体;与卤代苯甲酸的复合物具有通过短的、强的、电荷辅助的HB连接的酸分子,而所有的复合物在DMANH+中含有短的、强的、分子内的N-H···N HB。氢原子的行为内的短,强的HB,准确地描述了从中子数据,合理化的弱相互作用在本地晶体环境中,与质子的位置内的两套短,强的HB的影响相结合的弱相互作用在附近的HB。当DMANH+的N-H···N HB中的束缚质子与附近的氧原子足够接近时,它们之间的热运动也存在相关性。这项工作表明,在本地环境中的所有相互作用联合收割机,以确定短,强HB内的质子的行为,并考虑到这些相互作用,进一步控制晶体结构和性能可能是可以实现的。
Proton behavior within the hydrogen bond (HB) networks of five molecular complexes of the proton sponge DMAN and different organic acids is investigated by single-crystal neutron diffraction. The complexes form with either 2:1 (acid:DMAN) or 1:1 stoichiometric ratios and contain common structural motifs. All show proton transfer from an acid to DMAN, forming a DMANH+moiety and hydrogen-bonded acid dimers; complexes with halobenzoic acids have acid molecules linked by short, strong, charge-assisted HBs, while all complexes contain a short, strong, intramolecular N–H···N HB in DMANH+. The hydrogen atom behavior within the short, strong HBs, accurately described from the neutron data, is rationalized in terms of weak interactions in the local crystal environment, with the position of the proton within both sets of short, strong HBs affected by a combination of the weak interactions in the vicinity of the HBs. A correlation is also found between the thermal motion of the bound proton in the N–H···N HB of DMANH+and nearby oxygen atoms when they are sufficiently close to one another. This work shows that all interactions in the local environment combine to determine the behavior of protons within short, strong HBs and that, by taking these interactions into account, further control over the crystal structure and properties may be achievable.
氯苯甲酸:在 100 K 下重新测定。
DOI: 10.1107/s1600536810003387
发表时间: 2010-01-30
期刊: Acta crystallographica. Section E, Structure reports online
影响因子: --
作者:
Dutkiewicz G;Yathirajan HS;Al-Arique QN;Narayana B;Kubicki M
通讯作者: Kubicki M
DOI: 10.1021/ja971940v
发表时间: 1997-11-26
影响因子: 15
作者:
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调节 3,5-二硝基苯甲酸二聚体中的质子无序:局部环境的影响
DOI: 10.1021/cg300906j
发表时间: 2013
影响因子: 3.8
作者:
Andrew O. F. Jones;N. Blagden;G. McIntyre;A. Parkin;C. Seaton;L. Thomas;Chick C. Wilson
通讯作者: Chick C. Wilson
通过与质子海绵共结晶在苯甲酸二聚体中设计短、强、电荷辅助的氢键
DOI: 10.1021/acs.cgd.5b01787
发表时间: 2016
影响因子: 3.8
作者:
Thomas L
通讯作者: Thomas L
DOI: 10.1107/s0021889886089835
发表时间: 1986-04-01
影响因子: 6.1
作者:
COSIER, J;GLAZER, AM
通讯作者: GLAZER, AM