Three Polymorphic Forms of the Co-Crystal 4,4 '-Bipyridine/Pimelic Acid and their Structural, Thermal, and Spectroscopic Characterization

Braga D; Palladino G; Polito M; Rubini K; Grepioni F; Chierotti MR; Gobetto R

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Three Polymorphic Forms of the Co-Crystal 4,4 '-Bipyridine/Pimelic Acid and their Structural, Thermal, and Spectroscopic Characterization

机译：晶体4,4'-联吡啶/庚二酸的三种多晶型及其结构，热学和光谱表征

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Three crystal forms of the co-crystal 4,4'-bipy/pimelic acid (bipy: bipyridine), [NH4C5-C5H4N]center dot[HOOC-(CH2)(5)COOH], have been prepared and their relationship investigated by single-crystal X-ray diffraction, variable-temperature X-ray powder diffraction, differential scanning calorimetry and solid-state NMR spectroscopy. Both X-ray and NMR spectroscopic results indicate that no proton transfer takes place, that is, the three crystal forms are true co-crystals of neutral molecules. Forms I and II both convert into Form III at high temperature, Forms II and III being the thermodynamically stable forms at room and high temperature, respectively.

机译：制备了三种晶体形式的共晶体4,4'-联吡啶/庚二酸（联吡啶：联吡啶），[NH4C5-C5H4N]中心点[HOOC-（CH2）（5）COOH]，并通过以下方法研究了它们之间的关系单晶X射线衍射，变温X射线粉末衍射，差示扫描量热法和固态NMR光谱。 X射线和NMR光谱结果均表明没有质子转移发生，也就是说，这三种晶体形式是中性分子的真正共晶体。形式I和II均在高温下均转化为形式III，形式II和III分别为在室温和高温下的热力学稳定形式。

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《Chemistry: A European journal》 |2008年第32期|共11页
作者
Braga D; Palladino G; Polito M; Rubini K; Grepioni F; Chierotti MR; Gobetto R;
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正文语种 eng
中图分类化学;
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co-crystals; hydrogen bonds; NMR spectroscopy; polymorphism; solid-state structures; SOLID-STATE NMR; MAGNETIC-RESONANCE SPECTROSCOPY; VARIABLE CHAIN-LENGTH; X-RAY-DIFFRACTION; DICARBOXYLIC-ACIDS; HYDROGEN-BOND; MECHANOCHEMICAL PREPARATION; ORGANOMETALLIC MATERIALS; H-1-NMR SPECTROSCOPY; CHEMICAL-SHIFTS;

机译：共晶;氢键;NMR光谱;多态性;固态结构;固态NMR;磁共振谱;可变链长;X射线衍射;双羧酸;氢键;机械化学;有机材料;H-1-NMR光谱;化学位移;

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1. Three Polymorphic Forms of the Co-Crystal 4,4 '-Bipyridine/Pimelic Acid and their Structural, Thermal, and Spectroscopic Characterization [J] . Braga D, Palladino G, Polito M, Chemistry: A European journal . 2008,第32期

机译：晶体4,4'-联吡啶/庚二酸的三种多晶型及其结构，热学和光谱表征
2. Spectroscopic, thermal and structural studies of cocrystal of 2,2 '-diamino-4,4 '-bis(1,3-thiazole) with 4,4 '-bipyridine, 1,2-bis(4-pyridyl)ethylene and 1,3-bis(4-pyridyl) propane [J] . Ranjbar ZR, Morsali A, Zhu LG Journal of Molecular Structure . 2007,第1期

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3. Co-Crystal of Phenylsuccinic Acid and 4,4'-Bipyridine: Synthesis, Characterization, Crystal Structure, and Supramolecular Interactions [J] . Crystallography reports . 2019,第7期

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4. Synthesis, Structural Characterization and Antibacterial Activity of Ternary Zinc Acetate Complex with 4-Aminohippuric acid and 4,4'-Bipyridine Ligand [C] . Xi-Shi Tai International Conference on Industry, Information System and Material Engineering . 2011

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5. Metal coordination polymers and organic co-crystals of polybenzoic acids and bipyridines. [D] . Lo, Man Fung. 2000

机译：金属配位聚合物和聚苯甲酸和联吡啶的有机共晶体。
6. High Pressure Spectroscopic Investigation on Proton Transfer in Squaric Acid and 44′-Bipyridine Co-crystal [O] . Zhiwei Ma, Juntao Li, Chunyu Liu, -1

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7. The role of acid in the formation of hydrogen-bonded networks featuring 4,4'-dicarboxy-2,2'-bipyridine (H2dcbp): Synthesis, structural and magnetic characterisation of {[Cu(H2dcbp)Cl2].H2O}2 and [Cu(H2dcbp)(NO3)2(H2O)] [O] . Tynan, Eithne, Jensen, Paul, Lees, Anthea C., 2005

机译：酸在形成以4,4'-二羧基-2,2'-联吡啶（H2dcbp）为特征的氢键网络中的作用：{[Cu（H2dcbp）Cl2] .H2O} 2的合成，结构和磁性表征[铜（H2dcbp）（NO3）2（H2O）]

Three Polymorphic Forms of the Co-Crystal 4,4 '-Bipyridine/Pimelic Acid and their Structural, Thermal, and Spectroscopic Characterization

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