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Donor-Induced Helical Inversion of 1,1′-Binaphthyl Connecting with Two Molybdenum Complexes

  1. Dr. Li Ma1,†,
  2. Dr. Rizhe Jin1,†,
  3. Dr. Zheng Bian1,*,
  4. Dr. Chuanqing Kang1,
  5. Yu Chen1,
  6. Prof. Jingwei Xu2,
  7. Prof. Lianxun Gao1,*

Article first published online: 31 AUG 2012

DOI: 10.1002/chem.201201671

Issue

Chemistry - A European Journal

Chemistry - A European Journal

Volume 18, Issue 41, pages 13168–13172, October 8, 2012

Additional Information

How to Cite

Ma, L., Jin, R., Bian, Z., Kang, C., Chen, Y., Xu, J. and Gao, L. (2012), Donor-Induced Helical Inversion of 1,1′-Binaphthyl Connecting with Two Molybdenum Complexes. Chem. Eur. J., 18: 13168–13172. doi: 10.1002/chem.201201671

Author Information

  1. 1

    State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P.R. China)

  2. 2

    State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P.R. China)

  1. †

    These authors contributed equally to this work.

*State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022 (P.R. China)

  1. †

    These authors contributed equally to this work.

Publication History

  1. Issue published online: 27 SEP 2012
  2. Article first published online: 31 AUG 2012
  3. Manuscript Received: 12 MAY 2012

Funded by

  • National Natural Science Foundation of China. Grant Number: 20502024
  • State Key Laboratory of Polymer Physics and Chemistry

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Keywords:

  • biaryls;
  • chirality;
  • circular dichroism;
  • helical structures;
  • molybdenum

Abstract

An atropisomeric biaryl molecule with a given absolute configuration could present two opposite helical conformations through the rotation around C[BOND]C single bond. To the best of our knowledge, the biaryl system is the simplest helical inversion model apart from stereomutation between two enantiomers. Herein, we first report such true helical inversion phenomena of biaryl compounds. Two [MoVIO2(L)]-type complexes, in which L is a tridentate dioxoanionic pyridine O,N,O-ligand, are coalesced on the 2,2′,3,3′-positions of an (R)-1,1′-binaphthyl unit and an intramolecular dioxo bridge is formed by two Mo[DOUBLE BOND]O⋅⋅⋅Mo interactions. Exterior strong donors can coordinate to molybdenum to interrupt this dioxo bridge and inversions from negative to positive chirality are explicitly observed by circular dichroism spectroscopy, consistent with single-crystal X-ray diffraction analyses.

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