Publication Type |
Journal Article |
Title |
Synthesis, structure and physical properties of tetrabutylammonium salts of nickel complexes with the new ligand dcbdt=4,5-dicyanobenzene-1,2-dithiolate, [Ni(dcbdt)(2)](z-) (z = 0.4, 1, 2) |
Authors |
Dulce Simão H Alves Dulce Belo Sandra Rabaca EB Lopes IC Santos V GAMA M. Teresa Duarte Rui T. Henriques H Novais Manuel Almeida |
Groups |
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Journal |
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY |
Year |
2001 |
Month |
December |
Volume |
|
Number |
12 |
Pages |
3119-3126 |
Abstract |
The synthesis and characterization of the new aromatic ortho-dithiol, 4,5-dicyanobenzene-1,2-dithiol (3) is reported. This compound was used to prepare tetrabutylammonium salts of novel nickel complexes; the nickel(II) salt (nBu(4)N)(2)-[Ni(dcbdt)(2)] (4), the nickel(III) salt (nBu(4)N)(2)[Ni(debdt)(2)](2) (5), and the partially oxidized Ni-III/IV salt (nBu(4)N)(2)[Ni(dcbdt)(2)](5) (6). (dcbdt = 4,5-dicyanobenzene-1,2-dithiolate). The Ni-II complex presents a square-planar coordination geometry and is diamagnetic, while in the paramagnetic Ni-III complex the Ni(dcbdt)(2) units are strongly dimerized with the metal atom in a square-pyramidal coordination geometry and its magnetic susceptibility follows a singlet-triplet model with an antiferromagnetic coupling J = 897 K. The partially oxidized Ni-III/IV complex 6 presents a weakly temperature-dependent paramagnetism of 5-6 . 10(-4) emu/mol and a room-temperature electrical conductivity of 0.15 S/cm following a semiconducting regime. |
DOI |
http://dx.doi.org/ |
ISBN |
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Publisher |
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Book Title |
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ISSN |
1434-1948 |
EISSN |
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Conference Name |
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Bibtex ID |
ISI:000172505300019 |
Observations |
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