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. Author manuscript; available in PMC: 2009 Jan 16.
Published in final edited form as: J Am Chem Soc. 2007 Dec 13;130(2):676–686. doi: 10.1021/ja0762745

Scheme 1.

Scheme 1

Structures of 1 ([{Cu(TMPA)}2S2](ClO4)2), 2 [{Cu[HB(3,5-Pri2pz)3}]2(S2)] and 3 [{(TMEDA)Cu}2(µ-1,2-S2)2](OTf)2. The isopropyl groups in 2 and the methyl groups in 3 have been omitted for clarity.