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Titolo:
Nickel complexes based on thiophenedithiolate ligands - Magnetic properties of metallocenium salts
Autore:
Belo, D; Alves, H; Rabaca, S; Pereira, LC; Duarte, MT; Gama, V; Henriques, RT; Almeida, M; Ribera, E; Rovira, C; Veciana, J;
Indirizzi:
Inst Tecnol & Nucl, P-2686953 Sacavem, Portugal Inst Tecnol & Nucl Sacavem Portugal P-2686953 -2686953 Sacavem, Portugal Inst Super Tecn, P-1049001 Lisbon, Portugal Inst Super Tecn Lisbon Portugal P-1049001 cn, P-1049001 Lisbon, Portugal Univ Bellaterra, CSIC, Inst Ciencia Mat Barcelona, Cerdanyola Del Valles 08193, Spain Univ Bellaterra Cerdanyola Del Valles Spain 08193 el Valles 08193, Spain
Titolo Testata:
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
fascicolo: 12, , anno: 2001,
pagine: 3127 - 3133
SICI:
1434-1948(200112):12<3127:NCBOTL>2.0.ZU;2-N
Fonte:
ISI
Lingua:
ENG
Soggetto:
DIMENSIONAL METAL; CONDUCTION;
Keywords:
S ligands; coordination chemistry; magnetic properties; nickel;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Almeida, M Inst Tecnol & Nucl, Estrada Nacl 10, P-2686953 Sacavem, Portugal Inst Tecnol & Nucl Estrada Nacl 10 Sacavem Portugal P-2686953
Citazione:
D. Belo et al., "Nickel complexes based on thiophenedithiolate ligands - Magnetic properties of metallocenium salts", EUR J INORG, (12), 2001, pp. 3127-3133

Abstract

The nickel complex nBu(4)N[Ni(alpha -tpdt)(2)] (2) (alpha -tpdt = 2,3-thiophenedithiolate) has been prepared and characterized. A salt of this monoanionic paramagnetic complex, [Fe(Cp*)(2)][Ni(alpha -tpdt)(2)] (3), was obtained with decamethylferrocene, crystallizing in the monoclinic space group P2(1)/a with a = 15.443(3), b = 10.237(1), c = 20.360(2) Angstrom, beta = 107.54(1)degrees, V = 3069.1(7) Angstrom (3), Z = 4. Its structure consists of alternating cationic and anionic layers, with short interlayer contacts defining alternating cation-anion chains. Magnetic characterization of 3 at low applied magnetic fields revealed an antiferromagnetic transition at T-N= 2.56 kappa. Below T-N, 3 displays a metamagnetic behaviour with a critical field of 0.07 T at 1.6 K. The magnetic properties of this compound are compared with those of the analogous salts with diamagnetic gold dithiolate [Fe(Cp*)(2)][Au(alpha -tpdt)(2)] (4), and diamagnetic decamethylcobaltocenium, [Co(Cp*)(2)][Ni(alpha -tpdt)(2)] (5), which are also reported. This comparison shows that the ferromagnetic interactions observed in 3 are due to cation-anion intrachain interactions.

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Documento generato il 23/09/20 alle ore 14:55:44