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Han YG, Xu C, Duan T, Wu FH, Zhang QF, Leung WH: Heterometallic aggregates of copper (I) with metalloligand Sn (edt) 2 (edt = ethane-1,2-dithiolate): syntheses and structures of [Sn (edt) 2Cl (mu-I)(mu3-I)(CuPPh3) 3], [Sn (edt) 2 (mu-Br) 2 (mu3-Br) 2 (CuPPh3) 4], and [{Sn (edt) 2}3 (mu-OH) 3Cu5 (PPh3) 8][PF6] 2. Inorg Chem. 2009 Sep 21;48(18):8796-802.
The treatment of a slurry of an equimolar mixture of [Sn (edt)(2)] (edt = ethane-1,2- dithiolate) and [Et (4) N] Cl.xH (2) O with CuI in the presence of PPh (3) gave a tetranuclear compound, [Sn (edt)(2) Cl (mu-I)(mu (3)-I)(CuPPh (3))(3)] (1), which consists of a rectangular-pyramidal [Sn (edt)(2) Cl](-) moiety ligated by three [Cu (PPh (3))](+) fragments via the sulfur atoms of the edt (2-) ligands. The treatment of a slurry of [Sn (edt)(2)] and excess [Et (4) N] Br with [Cu (MeCN)(4)][PF (6)] in the presence of PPh (3) afforded a pentanuclear compound, [Sn (edt)(2)(mu-Br)(2)(mu (3)-Br)(2)(CuPPh (3))(4)] (2), which comprises two [(CuPPh (3))(2)(mu-Br)](+) fragments symmetrically ligating an octahedral trans-[Sn (edt)(2) Br (2)](2-) moiety via the sulfur and bromide atoms. Reaction of [Sn (edt)(2)] with [Cu (MeCN)(4)][PF (6)] and PPh (3) in a mixed MeCN/CH (2) Cl (2) solution yielded a novel octanuclear compound, [{Sn (edt)(2)}(3)(mu-OH)(3) Cu (5)(PPh (3))(8)][PF (6)](2) (3), which may be described as a triangular [{Sn (edt)(2)}(3)(mu-OH)(3)](3-) core chelated by three [Cu (PPh (3))(2)](+) species and capped by two [Cu (PPh (3))](+) species. The luminescent properties of compounds 1, 2, and 3 were investigated in a CH (2) Cl (2) solution at room temperature. Upon excitation at lambda > 360 nm, these compounds are luminescent in CH (2) Cl (2) solution with emissions having maxima at 422, 515, and 494 nm, respectively. |
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