Baughman Russell G, Martin Kenneth L, Singh Rajendra K, Stoffer James O
Division of Science, Truman State University, Kirksville, MO 63501-4221, USA.
Acta Crystallogr C. 2004 Feb;60(Pt 2):o103-6. doi: 10.1107/S0108270103027197. Epub 2004 Jan 10.
In 2,4-dihydroxybenzaldehyde 2,4-dinitrophenylhydrazone N,N-dimethylformamide solvate [or 4-[(2,4-dinitrophenyl)hydrazonomethyl]benzene-1,3-diol N,N-dimethylformamide solvate], C(13)H(10)N(4)O(6).C(3)H(7)NO, (X), 2,4-dihydroxyacetophenone 2,4-dinitrophenylhydrazone N,N-dimethylformamide solvate (or 4-[1-[(2,4-dinitrophenyl)hydrazono]ethyl]benzene-1,3-diol N,N-dimethylformamide solvate), C(14)H(12)N(4)O(6).C(3)H(7)NO, (XI), and 2,4-dihydroxybenzophenone 2,4-dinitrophenylhydrazone N,N-dimethylacetamide solvate (or 4-[[(2,4-dinitrophenyl)hydrazono]phenylmethyl]benzene-1,3-diol N,N-dimethylacetamide solvate), C(19)H(14)N(4)O(6).C(4)H(9)NO, (XII), the molecules all lack a center of symmetry, crystallize in centrosymmetric space groups and have been observed to exhibit non-linear optical activity. In each case, the hydrazone skeleton is fairly planar, facilitated by the presence of two intramolecular hydrogen bonds and some partial N-N double-bond character. Each molecule is hydrogen bonded to one solvent molecule.
在2,4 - 二羟基苯甲醛2,4 - 二硝基苯腙N,N - 二甲基甲酰胺溶剂化物[或4 - [(2,4 - 二硝基苯基)腙甲基]苯 - 1,3 - 二醇N,N - 二甲基甲酰胺溶剂化物]，C(13)H(10)N(4)O(6).C(3)H(7)NO，(X)，2,4 - 二羟基苯乙酮2,4 - 二硝基苯腙N,N - 二甲基甲酰胺溶剂化物（或4 - [1 - [(2,4 - 二硝基苯基)腙基]乙基]苯 - 1,3 - 二醇N,N - 二甲基甲酰胺溶剂化物），C(14)H(12)N(4)O(6).C(3)H(7)NO，(XI)，以及2,4 - 二羟基二苯甲酮2,4 - 二硝基苯腙N,N - 二甲基乙酰胺溶剂化物（或4 - [[(2,4 - 二硝基苯基)腙基]苯基甲基]苯 - 1,3 - 二醇N,N - 二甲基乙酰胺溶剂化物），C(19)H(14)N(4)O(6).C(4)H(9)NO，(XII)中，分子均缺乏对称中心，结晶于中心对称空间群中，并且已观察到表现出非线性光学活性。在每种情况下，腙骨架相当平面，这得益于两个分子内氢键的存在以及一些部分N - N双键特征。每个分子都与一个溶剂分子形成氢键。
