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J Am Chem Soc. 2004 Apr 14;126(14):4508-9.

Anion-pi interactions in a carousel copper(II)-triazine complex.

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  • 1Institut für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstr. 4, 37077 Goettingen, Germany.


Unprecedented anion-pi interactions are revealed for the electron-poor triazine rings in [L2(CuCl)3][CuCl4]Cl (L = hexakis(pyridin-2-yl)-[1,3,5]-triazine-2,4,6-triamin), where both the chloride ion and a Cl atom of [CuCl4]2- are located approximately 3.15 A above the ring centroids, in excellent agreement with theoretical predictions for a Cl-...triazine complex. This confirms the importance of attractive anion-pi interactions for the supramolecular assembly of complexes with pi-electron-deficient heteroaromatics.

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