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Torres JF, Bello-Vieda NJ, Macías MA, Rabelo R, Lloret F, Muñoz-Castro A, Hurtado JJ. Intermolecular interaction energies and magnetic properties of spin-isolated multinuclear Cu II complexes. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2020; 76:166-176. [PMID: 32831220 DOI: 10.1107/s2052520620001225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Accepted: 01/29/2020] [Indexed: 06/11/2023]
Abstract
Dinuclear CuII complexes with 3,5-dinitrobenzoates and 2,2'-bipyridine (2) or 1,10-phenanthroline (3) were synthesized and characterized. A complete energy framework analysis using the HF/3-21G energy model was performed which found that dispersion forces and C-H...O interactions are responsible for the crystal structure features. The magnetic properties of the complexes show a weak magnetic exchange between spins, resulting in low exchange constants of -2.72 (1) cm-1 and -1.10 (1) cm-1 for complexes (2) and (3), respectively. This results from the low overlap between magnetic orbitals induced by 3,5-dinitrobenzoate bridges and the arrangement of the magnetic orbitals. Consequently, the dinuclear complexes (2) and (3) behave as spin-isolated multinuclear CuII species in contrast to the trinuclear complex with similar ligands.
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Affiliation(s)
- Juan F Torres
- Departamento de Química, Universidad de los Andes, Carrera 1 No. 18A-12, Bogotá, 111711, Colombia
| | - Nestor J Bello-Vieda
- Departamento de Química, Universidad de los Andes, Carrera 1 No. 18A-12, Bogotá, 111711, Colombia
| | - Mario A Macías
- Departamento de Química, Universidad de los Andes, Carrera 1 No. 18A-12, Bogotá, 111711, Colombia
| | - Renato Rabelo
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgánica, Universitat de Valencia, C/ Catedrático José Beltrán 2, Paterna, Valencia 46980, Spain
| | - Francisco Lloret
- Instituto de Ciencia Molecular (ICMol)/Departament de Química Inorgánica, Universitat de Valencia, C/ Catedrático José Beltrán 2, Paterna, Valencia 46980, Spain
| | - Alvaro Muñoz-Castro
- Grupo de Química Inorgánica y Materiales Moleculares, Facultad de Ingeniería, Universidad Autonoma de Chile, El Llano Subercaseaux 2801, Santiago, Chile
| | - John J Hurtado
- Departamento de Química, Universidad de los Andes, Carrera 1 No. 18A-12, Bogotá, 111711, Colombia
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