Synthesis,Molecular Structure and Spectral Properties of η6-(Acenaphthylene) Chromium Tricarbonyl Complex

Abstract

Abstract: η6-(Acenaphthylene)chromium tricarbonyl complex was obtained as a racemic mixture of two enantiomers by treating the free ligand with (NH₃)₃Cr(CO)₃ in refluxing tetrahydrofuran and characterized by IR, ¹H NMR, ¹³C NMR,MS and elemental analysis. Purple-black crystals of C₁₂ H₈Cr(CO)₃ form in the P2₁/c space group with Z=4, a=0.871 9(7) nm, b=1.243 6(10) nm, c=1.150 4(9) nm, β =111.835(13)°. The full structure was determined by X-ray single crystal diffraction and the result indicated that chromium is η 6-coordinated to one six-membered ring of acenaphthylene. Face to face stack of coordinated aromatic rings by Cr(CO)₃ group on the outside is clearly observed between the two enantiomers possibly originated in the course of IRHRs (Inter-ring hatotropic rearrangements). Photophysical properties comparisons of the complex and the free ligand were also studied in advance.

Key words: Acenaphthylene, Tricarbonyl chromium, Synthesis, Spectral property

CLC Number:

O614

TrendMD:

LUO Xi-Li, TIAN Xiao-Hui, LI Chen-Yan, LIN Jia-Ping, CHEN Tao, XU Shi-Ai . Synthesis,Molecular Structure and Spectral Properties of η⁶-(Acenaphthylene) Chromium Tricarbonyl Complex[J]. Chem. J. Chinese Universities, 2004, 25(8): 1395.

References

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Synthesis,Molecular Structure and Spectral Properties of η⁶-(Acenaphthylene) Chromium Tricarbonyl Complex

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