Volume 39, Issue 20 pp. 3607-3610
Communication

Structural Characterization of a Cyclohexameric meta-Phenyleneethynylene Made by Alkyne Metathesis with In Situ Catalysts

Ping-Hua Ge Dr.

Ping-Hua Ge Dr.

Department of Chemistry and Biochemistry The University of South Carolina Columbia, SC 29208 (USA) Fax: (+1) 803-777-9521

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Wei Fu

Wei Fu

Department of Chemistry and Biochemistry The University of South Carolina Columbia, SC 29208 (USA) Fax: (+1) 803-777-9521

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Wolfgang A. Herrmann Prof.

Wolfgang A. Herrmann Prof.

Institut für Anorganische Chemie Technische Universität München Lichtenbergstrasse 4, 85747 Garching (Germany)

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Eberhardt Herdtweck Dr.

Eberhardt Herdtweck Dr.

Institut für Anorganische Chemie Technische Universität München Lichtenbergstrasse 4, 85747 Garching (Germany)

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Charles Campana Dr.

Charles Campana Dr.

Bruker AXS, Inc. 5465 East Cheryl Parkway, Madison, WI 53711-5373 (USA)

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Richard D. Adams Prof.

Richard D. Adams Prof.

Department of Chemistry and Biochemistry The University of South Carolina Columbia, SC 29208 (USA) Fax: (+1) 803-777-9521

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Uwe H. F. Bunz Prof.

Uwe H. F. Bunz Prof.

Department of Chemistry and Biochemistry The University of South Carolina Columbia, SC 29208 (USA) Fax: (+1) 803-777-9521

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U.H.F.B. and P.-H.G. thank the National Science Foundation (CHE 9814118), the Research Corporation, and the EPSCoR Office of the State of South Carolina for generous support. R.D.A. thanks the Alexander von Humboldt Foundation for an award which supported this work.

Abstract

New hexameric cyclophenyleneethynylenes (CPEs, 1) were synthesized by alkyne metathesis of meta-dipropynylated benzenes. Treatment of one of these CPE derivatives (R1=tert-butyl, hexyl, dodecyl; R2=H, methyl) with [Os3(CO)10(MeCN)2] led to a decacarbonyltriosmium–CPE complex in which the planarity of the ring was significantly disrupted, as evidenced by the results of the single-crystal X-ray diffraction analysis.

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