Unexpected formation of an inner salt, bis(N,N-diethylamino)carbeniumdithiocarboxylate, from 2-chloro or 2-phenoxy substituted 1,1-bis(N,N-diethylamino)ethylenes and elemental sulfur
A range of Grignard and organolithium reagents added to the negatively charged sulfur atom of the inner salt 1, despite the presence of the positively charged carbenium carbon, to give enethiolates 4, which were methylated by MeI to give dithioacetals 3 as the final product in excellent yields. A mechanism involving a single-electron-transfer process from nucleophiles to 1 is presented for this thiophilic addition.
一系列格氏试剂和有机锂试剂加到内盐 1 带负电的硫原子上(尽管存在带正电的硒碳),生成烯硫醇酯 4,这些烯硫醇酯在 MeI 的作用下发生甲基化,最终生成二硫代乙酸酯 3,收率极高。这一亲硫加成反应的机理涉及从亲核物到 1 的单电子转移过程。
Preparation of a New Class of Inner Salts by Formal Addition of Tosyl Nitrene to the Sulfur Atom of Inner Salts, α-Carbeniodithiocarboxylates
2,2-Bis(diethylamino)-2-ethylium-1-dithiocarboxylate (1a) was S-iminated by [N-(p-tolylsulfonyl)imino]phenyliodinane to provide a novel inner salt (4a) that formally possesses a thione-S-imide structure (>C=S=NR) as one of the canonical structures.
Group 12 metal complexes with inner-salt, bis(N,N-disubstituted amino)carbeniumdithiocarboxylate. Asymmetric stretching vibration of thiocarboxylate and reduction potential as probes for the coordination mode
analysis, IR spectrum, and electrochemical measurements. The composition of metal and RL and the coordination mode, such as monodentate, chelate, and bridging or capping, depend on both the central metal ion and the substituent on the diaminocarbenium moiety. The useful criteria for the coordination mode are found to be the wavenumber of the –CS2 asymmetric stretching vibration in the solid state, and the
Preparation and Properties of a Huge, Crystalline, and Water-Soluble Compound (C<sub>72</sub>H<sub>132</sub>N<sub>12</sub>Br<sub>6</sub>S<sub>12</sub>) That Possesses Six Carbenium Salt Units
The reaction of hexakis(bromomethyl)benzene with six molar amounts of 2,2-bis(diethylamino)-2-ethylium-1-dithiocarboxylate furnished a huge, crystalline, and water-soluble compound (C72H132N12Br6S12, MW = 2030) that possesses six carbenium bromide units.
Synthesis and crystal structure of a dinuclear platinum(II) bis(N,N-diethylamino)carbeniumdithiocarboxylate complex Pt2μ-(Et2N)2C2S22Cl4·0.5CH2Cl2: structural study of the coordinated inner salt
The bis(diethylamino)carbeniumdithiocarboxylate-bridged Pt(II) dinuclear complex, Pt 2 (Et 2 N) 2 C 2 S 2 2 Cl 4 ·0.5CH 2 Cl 2 , was synthesized and its X-ray crystal structure was solved. The two dithiocarboxylate ligands bridge the two Pt atoms in cis position. Although two possible inner-salt electronic structures, one with a C-C bond and the other with a C-C bond, had been postulated for the ligand
合成了双(二乙氨基)碳二硫代羧酸盐桥接的Pt(II)双核配合物Pt 2(Et 2 N)2 C 2 S 2 2 Cl 4·0.5CH 2 Cl 2,并对其X射线晶体结构进行了解析。两个二硫代羧酸酯配体在顺式位置桥接两个Pt原子。尽管已为配体假定了两个可能的内盐电子结构,一个带有CC键,另一个带有CC键,但配体的羧酸碳部分的X射线结构中的实际CC距离为1.50 (4)和1.50(3)A,表明桥接配体是具有CC单键的内盐结构。Pt-Pt距离为3.094(2)A,且未粘接。