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Synthesis, Electronic Structure, and Reactivities of Two-Sulfur- Stabilized Carbones Exhibiting Four-Electron Donor Ability

机译:两种硫稳定的货物的合成,电子结构和反应性表现出四型电子供体能力

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Bis(sulfane)carbon(0) (BSC; Ph_2S→C →SPh_2 (1)) is successfully synthesized by deprotonation of the corresponding protonated salt 1·HTfO. The diprotonated salt 1·(HTfO)2 as the starting material can be also easily accessed by the deimination of iminosulfane(sulfane)carbon(0) (iSSC)·HBF_4. Density functional theory calculations revealed the peculiar electronic structure of 1, which has two lone pairs of electrons at the central carbon atom. The largest proton affinities (PA(1): 297.5 kcalmol~(-1); PA(2): 183.7 kcal mol~(-1)) and the highest energy levels of the HOMOs (HOMO: -4.89 eV; HOMO-1: -5.02 eV) for 1 among the two-sulfurstabilized carbones clearly indicate the strong donor ability of carbon center stabilized by two S~(II) ligands. The donating ability of these lone pairs of electrons is demonstrated by the C-diaurated and C-proton-aurated complexes, which provide the first experimental evidence for two-sulfurstabilized carbones behaving as four-electron donors. Furthermore, the syntheses and application of Ag~I carbone complexes as carbone transfer agents are also reported.
机译:双(磺胺)碳(0)(BSC; pH_2S→C→SPH_2(1))通过去质子化的质子化盐1·HTFO来成功地合成。作为原料的偶极阳性盐1·(HTFO)2也可以通过咪喹甲磺酰胺(磺胺)碳(0)(ISSC)·HbF_4的含量容易地进入。密度泛函理论计算揭示了1的特殊电子结构,其在中央碳原子具有两个孤立的电子。最大的质子亲和力(PA(1):297.5 kcalmol〜(-1); pa(2):183.7 kcal mol〜(-1))和homos的最高能量水平(homo:-4.89ev; homo-1 :-5.02eV)对于两个硫磺化的货物中的1,清楚地表明碳中心稳定的强施力能力稳定的两个S〜(II)配体。通过C型尿复和C-质子 - 腐蚀的复合物证明了这些孤类电子的捐赠能力,其为双硫化的碳水骨牌表现为四电子供体提供第一实验证据。此外,还报道了作为碳酮转移剂的Ag〜I碳通配合物的合成和应用。

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