Variation in the coordination mode of arenedisulfonates to copper(II): synthesis and structural characterization of six copper(II) arenedisulfonate complexes

Cai, JW Chen, CH Liao, CZ Yao, JH Hu, XP Chen, XM

Jw. Cai et al., Variation in the coordination mode of arenedisulfonates to copper(II): synthesis and structural characterization of six copper(II) arenedisulfonate complexes, J CHEM S DA, (7), 2001, pp. 1137-1142

26

INGLESE

Article

Inorganic & Nuclear Chemistry

JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS

1472-7773 → ACNP

7

2001

1137 - 1142

ISI

1472-7773(2001):7<1137:VITCMO>2.0.ZU;2-U

Six copper(II) arenedisulfonate complexes with the general formula Cu(N-4)( nds/bpds). nH(2)O (nds=naphthalenedisulfonate, bpds=biphenyldisulfonate) ha ve been synthesized in aqueous solution and structurally characterized by X -ray single crystal diffraction, IR and UV spectroscopies, TGA and DSC. In Cu(en)(2)(1,5nds). 2H(2)O 1, Cu(N-meen)(2)(2,6nds). 2H(2)O 2 (N-meen=N-meth ylethylenediamine), Cu(dpn)(2)(bpds) 3 (dpn=2,3-diaminopropane), and Cu(cyl am)(1,5nds) 4 the SO3- group coordinates monodentately to the axial positio n of Cu2+ which is equatorially coordinated by four amino nitrogens. In 1 a nd 4 intramolecular hydrogen bonds are formed between the SO3- oxygens and amino hydrogens which reinforce interaction between the SO3- group and Cu2 complex cation. In Cu(dpn)(2)(1,5nds). 2H(2)O 5 and Cu(N,N'-meen)(2)(1,5nd s). 3H(2)O 6 (N,N'-meen=N,N'-dimethylethylenediamine), due to the steric hi ndrance caused by the methyl substitution of the amino ligands and the rigi dity of the naphthalene ring, water molecules, instead of the bulky SO3- gr oup, coordinate to the axial position of Cu2+. Structures 1-4 represent the first synthesis and structural characterization of polymeric 1-dimensional structures constructed by arenedisulfonates and divalent transition metals . Also, 1 crystallizes in the enantiomorphic space group P4(1)2(1)2 and dis plays interesting chiral grids constructed by ionic hydrogen bonds. The coo rdination geometries of Cu2+, as well as the coordination modes of arenedis ulfonates, are discussed in detail.