New Charge-Transfer Complexes with 1,2,5-Thiadiazoles as Both Electron Acceptors and Donors Featuring an Unprecedented Addition Reaction
作者:Elena A. Chulanova、Elena A. Pritchina、Lorraine A. Malaspina、Simon Grabowsky、Farzin Mostaghimi、Jens Beckmann、Irina Yu. Bagryanskaya、Margarita V. Shakhova、Lidia S. Konstantinova、Oleg A. Rakitin、Nina P. Gritsan、Andrey V. Zibarev
DOI:10.1002/chem.201604121
日期:2017.1.18
upon formation of a C−N bond between atom C7 of D and pyrazine atom N4 of A, accompanied by hydrogen atom transfer from C7 to another pyrazine atom N8 (compound 5). According to DFT calculations, the reaction is a multistep process featuring diradical intermediates and hydrogen atom intramolecular migration over four positions. Molecular and crystal structures of 5 (solvate with toluene) were elucidated
新型电荷转移(CT)配合物的设计和合成对于基础化学及其在材料科学中的应用非常重要。除了最近描述的同时具有1,2,5-噻二唑系列的电子受体(A)和供体(D)的第一个CT络合物(1 ; A:4-硝基-2,1,3-苯并噻二唑; D:4-氨基-2,1,3-苯并噻二唑),此处为新颖的CT配合物2和3与1,2,5-噻二唑同时为A(4,6-二硝基-2,1,3-苯并噻二唑和[1合成了(2,5]噻二唑[3,4– c ] [1,2,5]噻二唑)和D(4-氨基-2,1,3-苯并噻二唑)。该系列由具有[1,2,5] thiadiazolo [3,4‐ c的复合物4完成] [1,2,5]噻二唑(A)和苯氧蝶呤(D)。配合物2 – 4的结构通过单晶X射线衍射(XRD)以及溶液和固态UV / Vis光谱进行表征。通过密度泛函理论(DFT)计算获得了它们形成的热力学,通过分子中原子的量子理论(QTAIM)计算了它们的键合