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

Citation
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
Citations number
26
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
ISSN journal
1472-7773 → ACNP
Issue
7
Year of publication
2001
Pages
1137 - 1142
Database
ISI
SICI code
1472-7773(2001):7<1137:VITCMO>2.0.ZU;2-U
Abstract
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.