Synthesis and (Spectro)electrochemical Behavior of 2,5-Diferrocenyl-1- phenyl-1 H-phosphole
Synthesis and (Spectro)electrochemical Behavior of 2,5-Diferrocenyl-1- phenyl-1 H-phosphole
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2,5-二茂铁基-1-苯基-1 H-磷的合成和(光谱)电化学行为
DOI:
10.1021/om400201b
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发表时间:
2013
期刊:
影响因子:
2.8
通讯作者:
H. Lang
中科院分区:
文献类型:
--
作者:
D. Miesel;A. Hildebrandt;M. Korb;P.J. Low;H. Lang
2,5-Diferrocenyl-1-phenyl-1H-phosphole (3) has successfully been prepared by a cyclization reaction of phenylphosphine with 1,4-diferrocenyl butadiyne. Subsequent reaction with elemental sulfur and selenium, respectively, leads to the formation of the appropriate phosphole sulfide (4) or selenide (5). Molecules4and5have structurally been characterized by single-crystal X-ray diffraction. Despite the tetrahedral environment at the phosphorus atom, thecC4P ring itself is planar and coplanar with the cyclopentadienyl rings of the ferrocenyl termini. Electrochemical measurements revealed that the two ferrocenyl groups could be oxidized at discrete potentials, with separation of the individual redox waves of 280 (3), 240 (4), and 235 mV (5), respectively. These values agree with other examples of heterocyclic-bridged diferrocenyl compounds such as diferrocenylthiophene (260 mV) and diferrocenylfuran (290 mV). Compounds [3]+–[5]+exhibit IVCT absorptions of weak to moderate strength, which conforms well to the predictions of the Hush two-state model for weakly coupled mixed-valence systems. These conclusions are supported by DFT and TD-DFT results, which satisfactorily model the observed structural and spectroscopic parameters. The computational work assists in assigning the various low-energy (LF, IVCT) electronic transitions and also highlights the key role of the unsaturatedcis-diene-like C4H2building block of the heterocycle in promoting the Fc → Fc+electron-transfer transition.
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影响因子:
4.6
作者:
A. Hildebrandt;D. Schaarschmidt;R. Claus;H. Lang
通讯作者:
H. Lang
影响因子:
2.8
作者:
F. Coat;C. Lapinte
通讯作者:
F. Coat;C. Lapinte
影响因子:
5.2
作者:
Magali Clochard;J. Grundy;B. Donnadieu;F. Mathey
通讯作者:
F. Mathey
影响因子:
15
作者:
R. Pinnell;C. Megerle;S. L. Manatt;P. Kroon
通讯作者:
P. Kroon
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
A. Nafady;W. Geiger
通讯作者:
W. Geiger