Rational Synthesis and Characterization of Dimolybdenum(II) Compounds Bearing Ferrocenyl-Containing Ligands toward Modulation of Electronic Coupling
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https://figshare.com/articles/dataset/Rational_Synthesis_and_Characterization_of_Dimolybdenum_II_Compounds_Bearing_Ferrocenyl_Containing_Ligands_toward_Modulation_of_Electronic_Coupling/2179762
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资源简介：
Three novel cis-to-trans-converted
dimolybdenum(II) complexes, trans-[Mo2(O2C-Fc)2(DPPX)2][BF4]2 {2a–2c; DPPX = DPPA
[N,N-bis(diphenylphosphino)amine],
DPPM [1,1-bis(diphenylphosphino)methane], and DPPE [1,2-bis(diphenylphosphino)ethane],
respectively}, were synthesized through the insertion of bulky diphosphine
ligands, which force a permanent trans arrangement, as evidenced by
X-ray crystallography and density functional theory calculations.
All compounds were characterized by means of NMR, UV–vis, and
IR spectroscopy as well as thermogravimetry–mass spectrometry
measurements. Interestingly, uncommon UV–vis transitions and
oxidation sequences were observed compared to previously reported
ones. As verified by electrochemical measurements, all synthesized
complexes show two separate one-electron-redox processes assigned
to subsequent oxidations of the two redox-active ferrocenecarboxylate
ligands, with a split of ca. 70 mV. This behavior reveals electronic
interaction between the two equatorially trans-positioned ferrocenyl
units. The presented work provides new insights into the rational
synthesis of electronically coupled trans-coordinated Mo2 systems, paving the way toward the design of linear multicenter
redox-active oligomers.
创建时间：
2016-02-13
