Structure and magnetic properties of binuclear Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 : A carboxylate-bridged Cu(II) spin dimer
The complex Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 was synthesized from Cu(OH) 2 , trans-2-butenoic acid, and dimethylformamide. An X-ray structure determination showed that the complex has the familiar Cu 2 (O 2 CR) 4 L 2 dimer structure. trans-2-Butenoate groups in molecules related by a center of symme...
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2000
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201693_v310_n1_p81_Schlam http://hdl.handle.net/20.500.12110/paper_00201693_v310_n1_p81_Schlam |
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paper:paper_00201693_v310_n1_p81_Schlam2023-06-08T14:40:50Z Structure and magnetic properties of binuclear Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 : A carboxylate-bridged Cu(II) spin dimer Binuclear complexes Cu(II) dimer EPR measurements Magnetic properties Solid state reactivity X-ray crystal structures butane cobalt copper complex copper derivative dimer n,n dimethylformamide article chemical structure irradiation magnetism structure analysis synthesis X ray crystallography The complex Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 was synthesized from Cu(OH) 2 , trans-2-butenoic acid, and dimethylformamide. An X-ray structure determination showed that the complex has the familiar Cu 2 (O 2 CR) 4 L 2 dimer structure. trans-2-Butenoate groups in molecules related by a center of symmetry have a short contact between the α-carbon atoms (3.611 Å), suggesting a study of the solid-state reactivity of this complex. Irradiation of the complex ( 60 Co X-rays, 219 kGy), did not produce any detectable product. Magnetic susceptibility measurements in the range between 2 and 350 K in a powder sample, and EPR measurements in powder and single-crystal samples were performed. The data show the dimeric magnetic structure of the compound, with an antiferromagnetic exchange coupling J/k(B) = -220 K and a fine structure coupling D/h = -10.04 GHz within the excited spin triplet. Hyperfine structure with the two Cu nuclei is clearly observed. These results are discussed in terms of the structure. (C) 2000 Elsevier Science B.V. 2000 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201693_v310_n1_p81_Schlam http://hdl.handle.net/20.500.12110/paper_00201693_v310_n1_p81_Schlam |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Binuclear complexes Cu(II) dimer EPR measurements Magnetic properties Solid state reactivity X-ray crystal structures butane cobalt copper complex copper derivative dimer n,n dimethylformamide article chemical structure irradiation magnetism structure analysis synthesis X ray crystallography |
| spellingShingle |
Binuclear complexes Cu(II) dimer EPR measurements Magnetic properties Solid state reactivity X-ray crystal structures butane cobalt copper complex copper derivative dimer n,n dimethylformamide article chemical structure irradiation magnetism structure analysis synthesis X ray crystallography Structure and magnetic properties of binuclear Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 : A carboxylate-bridged Cu(II) spin dimer |
| topic_facet |
Binuclear complexes Cu(II) dimer EPR measurements Magnetic properties Solid state reactivity X-ray crystal structures butane cobalt copper complex copper derivative dimer n,n dimethylformamide article chemical structure irradiation magnetism structure analysis synthesis X ray crystallography |
| description |
The complex Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 was synthesized from Cu(OH) 2 , trans-2-butenoic acid, and dimethylformamide. An X-ray structure determination showed that the complex has the familiar Cu 2 (O 2 CR) 4 L 2 dimer structure. trans-2-Butenoate groups in molecules related by a center of symmetry have a short contact between the α-carbon atoms (3.611 Å), suggesting a study of the solid-state reactivity of this complex. Irradiation of the complex ( 60 Co X-rays, 219 kGy), did not produce any detectable product. Magnetic susceptibility measurements in the range between 2 and 350 K in a powder sample, and EPR measurements in powder and single-crystal samples were performed. The data show the dimeric magnetic structure of the compound, with an antiferromagnetic exchange coupling J/k(B) = -220 K and a fine structure coupling D/h = -10.04 GHz within the excited spin triplet. Hyperfine structure with the two Cu nuclei is clearly observed. These results are discussed in terms of the structure. (C) 2000 Elsevier Science B.V. |
| title |
Structure and magnetic properties of binuclear Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 : A carboxylate-bridged Cu(II) spin dimer |
| title_short |
Structure and magnetic properties of binuclear Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 : A carboxylate-bridged Cu(II) spin dimer |
| title_full |
Structure and magnetic properties of binuclear Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 : A carboxylate-bridged Cu(II) spin dimer |
| title_fullStr |
Structure and magnetic properties of binuclear Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 : A carboxylate-bridged Cu(II) spin dimer |
| title_full_unstemmed |
Structure and magnetic properties of binuclear Cu 2 (O 2 CCH=CHCH 3 ) 4 (DMF) 2 : A carboxylate-bridged Cu(II) spin dimer |
| title_sort |
structure and magnetic properties of binuclear cu 2 (o 2 cch=chch 3 ) 4 (dmf) 2 : a carboxylate-bridged cu(ii) spin dimer |
| publishDate |
2000 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00201693_v310_n1_p81_Schlam http://hdl.handle.net/20.500.12110/paper_00201693_v310_n1_p81_Schlam |
| _version_ |
1768545722760691712 |