Cyclopentadienide Ligand CpC– Possessing Intrinsic Helical Chirality and Its Ferrocene Analogues
Cyclopentadienide Ligand CpC– Possessing Intrinsic Helical Chirality and Its Ferrocene Analogues
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具有固有螺旋手性的环戊二烯配体 CpCâ 及其二茂铁类似物
DOI:
10.1021/acs.organomet.5b00673
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发表时间:
2015
期刊:
影响因子:
2.8
通讯作者:
W. R. Thiel
中科院分区:
文献类型:
--
作者:
J.-Y. Chung;C. Schulz;H. Bauer;Y. Sun;H. Sitzmann;H. Auerbach;A. J. Pierik;V. Schünemann;A. Neuba;W. R. Thiel
The novel chiral cyclopentadiene-type ligand CpCH is accessible from dibenzosuberenone in a five-step sequence with overall yields of 64%. NMR spectroscopy as well as DFT calculations prove that the racemization of this compound is slow at room temperature. By deprotonation of CpCH and subsequent reaction with appropriate iron(II) precursors, the novel ferrocene derivatives (CpC)2Fe and (CpC)Fe(4Cp) are accessible in good yields. The latter could structurally be characterized by means of single-crystal X-ray crystallography. Mössbauer spectroscopy proves the ferrocene nature of (CpC)2Fe and (CpC)Fe(4Cp), and electrochemical investigations carried out with (CpC)Fe(4Cp) show that the compound is, as expected, more easily oxidized than ferrocene.
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DOI:
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