(C5H4CH3)4Ti2Se4 reacts at 0-degrees-C in CS2 with CH3AsCl2 in a molar ratio of 1:1 to give the novel (C5H4CH3)2TiSe4AsCH3, which forms air-stable black-violet crystals that have been characterized by H-1 NMR, mass, and infrared spectra. When a molar ratio of 1:2 is used the novel (CH3As)2Se3 rather than (CH3As)2Se4 is obtained, as orange crystals, together with elemental selenium. (CH3As)2Se3 can also be prepared from (C5H4CH3)2TiSe5 and CH3AsCl2 at 20-degrees-C in CS2; it probably contains five-membered 1,3-As2Se3 rings.
(C5H4CH3)4Ti2Se4 在 0 摄氏度的 CS2 中与
CH3AsCl2 按 1:1 的摩尔比例反应,生成新型化合物 (C5H4CH3)2TiSe4AsCH3,该化合物形成一种空气稳定的黑紫色晶体,经氢-1核磁共振、质谱和红外光谱表征。当使用 1:2 的摩尔比例时,生成新型化合物 (
CH3As)2Se3,而非 ( )2Se4,前者以橙色晶体形式析出,同时伴有
单质硒生成。此外,( )2Se3 也可由 (C5H4CH3)2TiSe5 与 在 20 摄氏度的 CS2 中反应制得;该化合物可能含有五元环状的 1,3-
砷环(1,3-
As2Se3ef=https://www.molaid.com/MS_62563 target="_blank">S2 环)。