Carbonyl Diisocyanate CO(NCO)<sub>2</sub>: Synthesis and Structures in Solid State and Gas Phase
作者:Thomas M. Klapötke、Burkhard Krumm、Sebastian Rest、Regina Scharf、Jan Schwabedissen、Hans-Georg Stammler、Norbert W. Mitzel
DOI:10.1021/acs.jpca.6b04245
日期:2016.7.7
A modified synthesis for carbonyl diisocyanate, CO(NCO)2, starting from trichloroisocyanuric acid and diphosgene is described. In addition to the previously reported 13C NMR resonances, the 15N NMR shift is determined for the first time. The structure in the solid state was determined by X-ray diffraction (XRD) on in situ grown crystals, that in the gas phase was experimentally determined by electron
描述了从三氯异氰尿酸和双光气开始的羰基二异氰酸酯,CO(NCO)2的改良合成方法。除先前报道的13 C NMR共振外,首次确定15 N NMR位移。固态结构是通过在原位生长的晶体上进行X射线衍射(XRD)来确定的,气相结构是通过电子衍射(GED)通过实验确定的,而单分子的理论上是通过量子化学计算来确定的。将结构与相关系统进行比较和讨论。量子化学计算以及GED和XRD证明了syn – syn是最低能量的构象。在量子化学计算和GED一个的存在顺式-反构象异构体进行确认和测定该构象异构体的结构。
Polynitro Containing Energetic Materials based on Carbonyldiisocyanate and 2, 2-Dinitropropane-1, 3-diol
作者:Thomas M. Klapötke、Burkhard Krumm、Sebastian F. Rest、Muhamed Sućeska
DOI:10.1002/zaac.201300563
日期:2014.1
carbonyl biscarbamate moiety derived from the precursor carbonyldiisocyanate were synthesized. In addition, 2, 2-dinitropropane-1, 3-diyl bis(2, 2,2-trinitroethylcarbamate) and 2, 2-dinitropropane-1, 3-diyl bis(2, 2,2-trinitroethyl) dicarbonate, were synthesized using 2, 2-dinitropropane-1, 3-diol as starting material. The compounds were characterized by using the analytical methods, single-crystal X-ray
bis(-thiocarbamates) have been intensively studied. C NMR spectroscopy shows a specific chemical shift for each compound class. In the solidstate the molecules undergo intramolecular ring formation and additionally intermolecular dimer or strand building both via hydrogenbonds. The influence of the organic groups is showcased by Hirshfeld surface analysis and the study is rounded off by findings from IR spectroscopy