The preparation and characterization (elemental analysis, 1H NMR, and cyclic voltammetry) of the new compounds MM(TiPB)4, where MM = MoW and W2 and TiPB = 2,4,6-triisopropylbenzoate, are reported. Together with Mo2(TiPB)4, previously reported by Cotton et al. (Inorg. Chem.2002, 41, 1639), the new compounds have been studied by electronic absorption, steady-state emission, and transient absorption spectroscopy
报告了新化合物MM(TiPB)4的制备和表征(元素分析,1 H NMR和循环伏安法),其中MM = MoW和W 2和TiPB =
2,4,6-三异丙基苯甲酸酯。以前由Cotton等人报道Mo 2(TiPB)4。(Inorg。
化学式2002,41,1639),新化合物进行了研究电子吸收,稳态发射,和瞬态吸收光谱(飞秒和纳秒)。这些化合物在光谱的可见光区域显示出强吸收,这些吸收被赋予MMδ到芳基
羧酸酯π*跃迁1MLCT。各化合物也显示了从两个激发态,分配了作为发光1 MLCT和3点MMδδ*的状态。从发射的能量1 MLCT状态如下所述能量排序MM =沫2 >世界记忆> w ^ 2,但是从发光3 MMδδ*状态如下相反的顺序:MM = W 2 >世界记忆>沫2。证据被呈现以支持在每种情况下能量发射源于视图3个MMδδ*状态。所述的寿命1种在这些系统MLCT状态是~0.4-6 PS,而
磷光取决于M