Synthesis, characterization and crystal structures of mono and dinuclear macrocyclic cobalt(II) complexes with a new tetraaza m-xylyl-based macrocyclic ligand
Authorized Users Only
2015
Authors
Khandar, Ali AkbarKirschbaum, Kristin
Abedi, Marjan
Mock, Kristi
Tracy, Greg
Spasojević, Vojislav
Hosseini-Yazdi, Seyed Abolfazl
Article (Published version)
Metadata
Show full item recordAbstract
A new tetraaza macrocycle bearing two xylyl spacers was synthesized as a potential binucleating ligand (L) and the crystal structure of its tetrachloride salt was determined by single crystal X-ray diffraction analysis. Corresponding Co(II) complexes were isolated as both mono- and dinuclear complexes of [Co(H2L)Cl-2]Cl-2, [Co2LBr2OH]Br and [Co2LI2OH]I, and characterized using different physico-chemical techniques. The single crystal X- ray diffraction technique for [Co(H2L)Cl-2]Cl-2 and [Co2LI2OH]I indicates that the Co ions adopt the geometry of a distorted tetrahedron in a tetracoordinated environment. The two metal centers in the [Co2LI2OH]I complex are bridged by a hydroxyl group with Co center dot center dot center dot Co distance of 3.501(1) angstrom. The bromo- and iodo-complexes show antiferromagnetic behavior which can be described by spin only Hamiltonian while spin- orbital coupling for tetrahedral coordinating cobalt ions is very small.
Source:
New Journal of Chemistry, 2015, 39, 4, 2822-2831Funding / projects:
- University of Tabriz, College of Sciences of the University of Mohaghegh Ardabili Research Council, College of Natural Science and Mathematics of the University of Toledo
DOI: 10.1039/c4nj01608d
ISSN: 1144-0546; 1369-9261
WoS: 000352543800059
Scopus: 2-s2.0-84926433161
Collections
Institution/Community
VinčaTY - JOUR AU - Khandar, Ali Akbar AU - Kirschbaum, Kristin AU - Abedi, Marjan AU - Mock, Kristi AU - Tracy, Greg AU - Spasojević, Vojislav AU - Hosseini-Yazdi, Seyed Abolfazl PY - 2015 UR - https://vinar.vin.bg.ac.rs/handle/123456789/496 AB - A new tetraaza macrocycle bearing two xylyl spacers was synthesized as a potential binucleating ligand (L) and the crystal structure of its tetrachloride salt was determined by single crystal X-ray diffraction analysis. Corresponding Co(II) complexes were isolated as both mono- and dinuclear complexes of [Co(H2L)Cl-2]Cl-2, [Co2LBr2OH]Br and [Co2LI2OH]I, and characterized using different physico-chemical techniques. The single crystal X- ray diffraction technique for [Co(H2L)Cl-2]Cl-2 and [Co2LI2OH]I indicates that the Co ions adopt the geometry of a distorted tetrahedron in a tetracoordinated environment. The two metal centers in the [Co2LI2OH]I complex are bridged by a hydroxyl group with Co center dot center dot center dot Co distance of 3.501(1) angstrom. The bromo- and iodo-complexes show antiferromagnetic behavior which can be described by spin only Hamiltonian while spin- orbital coupling for tetrahedral coordinating cobalt ions is very small. T2 - New Journal of Chemistry T1 - Synthesis, characterization and crystal structures of mono and dinuclear macrocyclic cobalt(II) complexes with a new tetraaza m-xylyl-based macrocyclic ligand VL - 39 IS - 4 SP - 2822 EP - 2831 DO - 10.1039/c4nj01608d ER -
@article{ author = "Khandar, Ali Akbar and Kirschbaum, Kristin and Abedi, Marjan and Mock, Kristi and Tracy, Greg and Spasojević, Vojislav and Hosseini-Yazdi, Seyed Abolfazl", year = "2015", abstract = "A new tetraaza macrocycle bearing two xylyl spacers was synthesized as a potential binucleating ligand (L) and the crystal structure of its tetrachloride salt was determined by single crystal X-ray diffraction analysis. Corresponding Co(II) complexes were isolated as both mono- and dinuclear complexes of [Co(H2L)Cl-2]Cl-2, [Co2LBr2OH]Br and [Co2LI2OH]I, and characterized using different physico-chemical techniques. The single crystal X- ray diffraction technique for [Co(H2L)Cl-2]Cl-2 and [Co2LI2OH]I indicates that the Co ions adopt the geometry of a distorted tetrahedron in a tetracoordinated environment. The two metal centers in the [Co2LI2OH]I complex are bridged by a hydroxyl group with Co center dot center dot center dot Co distance of 3.501(1) angstrom. The bromo- and iodo-complexes show antiferromagnetic behavior which can be described by spin only Hamiltonian while spin- orbital coupling for tetrahedral coordinating cobalt ions is very small.", journal = "New Journal of Chemistry", title = "Synthesis, characterization and crystal structures of mono and dinuclear macrocyclic cobalt(II) complexes with a new tetraaza m-xylyl-based macrocyclic ligand", volume = "39", number = "4", pages = "2822-2831", doi = "10.1039/c4nj01608d" }
Khandar, A. A., Kirschbaum, K., Abedi, M., Mock, K., Tracy, G., Spasojević, V.,& Hosseini-Yazdi, S. A.. (2015). Synthesis, characterization and crystal structures of mono and dinuclear macrocyclic cobalt(II) complexes with a new tetraaza m-xylyl-based macrocyclic ligand. in New Journal of Chemistry, 39(4), 2822-2831. https://doi.org/10.1039/c4nj01608d
Khandar AA, Kirschbaum K, Abedi M, Mock K, Tracy G, Spasojević V, Hosseini-Yazdi SA. Synthesis, characterization and crystal structures of mono and dinuclear macrocyclic cobalt(II) complexes with a new tetraaza m-xylyl-based macrocyclic ligand. in New Journal of Chemistry. 2015;39(4):2822-2831. doi:10.1039/c4nj01608d .
Khandar, Ali Akbar, Kirschbaum, Kristin, Abedi, Marjan, Mock, Kristi, Tracy, Greg, Spasojević, Vojislav, Hosseini-Yazdi, Seyed Abolfazl, "Synthesis, characterization and crystal structures of mono and dinuclear macrocyclic cobalt(II) complexes with a new tetraaza m-xylyl-based macrocyclic ligand" in New Journal of Chemistry, 39, no. 4 (2015):2822-2831, https://doi.org/10.1039/c4nj01608d . .