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Treatment of the copper(I) trifluoromethanesulphonate toluene complex {[Cu(CF 3 SO 3 )] 2  · C 6 H 5 Me} (1) with phthalazine (phtz, C 8 H 6 N 2 ) in dichloromethane-acetonitrile solution yielded, via the bis(acetonitrile)tris(μ-phthalazine)dicopper(I) trifluoromethanesulphonate intermediate (2), the novel bis(phthalazine)tris(μ-phthalazine)dicopper(I) trifluoromethanesulphonate salt (3). Compound 3 was completely characterised and the molecular structure determined by single-crystal X-ray diffraction. Complex 3 crystallises in the monoclinic system, space group C2/c, with a = 26.9527(10), b = 10.9558(7), c = 19.2104(10) Å , β = 127.268(2)◦, V = 4514.3(4) Å 3  and Z = 4. The copper(I) coordination geometry is tetrahedral, each copper centre being linked to four phthalazine molecules. Dicationic units of 3 which present an unusual paddle wheel-like shape constitute appropriate organometallic building blocks for the construction of a supramolecular solid-state architecture. The analysis of the packing of the molecules of 3 in the crystal revealed an unprecedented 2-dimensional network, resulting from intermolecular π-π and electrostatic interactions.

zeitschrift für naturforschung b

Self-assembly Through Non-coordinating Intermolecular Forces, Part 2 [1]. Synthesis, Crystal Structure and Packing of [Cu 2 (μ-phthalazine) 3 (phthalazine) 2 ][CF 3 SO 3 ] 2