1519035-44-9Relevant academic research and scientific papers
Mo2 paddlewheel complexes functionalized with a single MLCT, S1 infrared-active carboxylate reporter ligand: Preparation and studies of ground and photoexcited states
Brown-Xu, Samantha E.,Chisholm, Malcolm H.,Durr, Christopher B.,Lewis, Sharlene A.,Spilker, Thomas F.,Young, Philip J.
, p. 637 - 644 (2014)
From the reactions between Mo2(DAniF)3pivalate (DAniF = N,N′-di(p-anisyl)formamidinate) and the carboxylic acids LH, the title compounds Mo2(DAniF)3L have been prepared and characterized: compounds I (L = O2CC≡CPh), II (L = O 2CC4H2SC≡CH), and III (L = O 2CC6H4-p-CN). The new compounds have been characterized in their ground states by spectroscopy (1H NMR, ultraviolet-visible absorption, near-infrared absorption, and steady state emission), cyclic voltammetry, and density functional theory calculations. The compounds show strong metal Mo2 to ligand L δ-π* transitions in their visible spectra. The nature of the S1 1MLCT and T1 states has been probed by time-resolved (femtosecond and nanosecond) transient absorption and infrared spectroscopy. The observed shifts of the C≡C and C≡N vibrational modes are found to be consistent with the negative charge being localized on the single L in the S1 states, while the T1 states are 3Mo 2 δδ*. The present results are compared to earlier studies of the photoexcited states of trans-Mo2(2,4,6- triisopropylbenzoate)2L2 compounds that have been assigned as either localized or delocalized.
