Synthesis, structure, and NMR spectra of a new ferrocenylbenzene tricarbonylchromium complex

Abstract

Complex 1 (1,2,4-triferrocenylbenzene tricarbonylchromium), possessing four heterometals, has been synthesized efficiently by a new method in one pot. Through detailed study on the NMR chemical shifts of 1 and the ligand 2, the NMR chemical shifts of 1 shift upfield from those of 2. The NMR spectra of 1 have reduced magnetic anisotropy of benzene after Cr(CO)₃ coordination with 2. The ferrocenyl groups have electron donating effect on the central benzene ring of 1.

Keywords:

• Synthesis
• NMR spectra
• Ferrocenylbenzene tricarbonylchromium complex
• Ring current

Acknowledgments

We are grateful to the Program for New Century Excellent Talents in University (NCET-08-858), the Natural Science Foundation of China (NSFC 21062011), and the Natural Science Foundation of the Inner Mongolia (20080404MS020).