TY  - JOUR
AU  - Vučković, G.
AU  - Antonijević-Nikolić, M.
AU  - Lis, T.
AU  - Mroziński, J.
AU  - Korabik, M.
AU  - Radanović, Dušanka
PY  - 2008
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/461
AB  - [Cu4(succinato)(tpmc)2](ClO4) 6 · 2H2O (tpmc = N,N′,N″,N‴-tetrakis-(2-pyridylmethyl)-1,4,8,11-tetraa zacyclotetradecane, succinato = dianion of succinic acid) has been prepared and characterized by elemental analysis, UV/vis, IR, EPR (X-band) spectra, conductivity and magnetization measurements (SQUID). Based on a low-temperature measurements (100(2) K), X-ray analyses of the first tetranuclear Cu(II)-tpmc complex, single crystal of which corresponded to the [Cu4(succinato)(tpmc)2](ClO4) 6·2C2H5OH·4H2O (1) and of the previously described [Cu2(C6H5COO)tpmc](ClO4) 3·0.5CH3OH·0.5H2O (2) were also done. The complexes crystallize in triclinic P over(1, ̄) (1) and monoclinic P21/c (2) space groups. The geometry around the first Cu(II) coordination sphere in the tetranuclear complex (1) is almost regular square-based pyramidal, while significant distortion around the other metallic center was observed. The angular structural parameter (τ), which is applicable to five coordinate structures as an index of degree of trigonality, was found to be 0.05 and 0.40, respectively. In the binuclear complex (2) the geometry around the first Cu(II) coordination sphere is regular square-based pyramidal (τ = 0.09), while around the other is distorted trigonal bipyramidal (τ = 0.79). In complexes (1) and (2) the bridging carboxylate groups are coordinated to metallic centres in a syn-anti mode. Weak ferromagnetic interactions are observed between copper(II) ions, connected through syn-anti monocarboxylate bridges (2J = +1.26 and +1.84 cm-1 in complexes (1) and (2), respectively). Additional antiferromagnetic interaction through succinato anion (zJ′ = -1.57 cm-1) gives finally rise to antiferromagnetic interactions, observed in magnetic measurements in tetrameric complex (1).
PB  - Elsevier
T2  - Journal of Molecular Structure
T1  - X-ray analyses, spectroscopic and magnetic properties of [Cu4(succinato)(tpmc)2](ClO4) 6·2C2H5OH·4H2O and [Cu2(C6H5COO)tpmc](ClO4) 3·0.5CH3OH·0.5H2O complexes
VL  - 872
IS  - 2-3
SP  - 135
EP  - 144
DO  - 10.1016/j.molstruc.2007.02.028
ER  - 

@article{
author = "Vučković, G. and Antonijević-Nikolić, M. and Lis, T. and Mroziński, J. and Korabik, M. and Radanović, Dušanka",
year = "2008",
abstract = "[Cu4(succinato)(tpmc)2](ClO4) 6 · 2H2O (tpmc = N,N′,N″,N‴-tetrakis-(2-pyridylmethyl)-1,4,8,11-tetraa zacyclotetradecane, succinato = dianion of succinic acid) has been prepared and characterized by elemental analysis, UV/vis, IR, EPR (X-band) spectra, conductivity and magnetization measurements (SQUID). Based on a low-temperature measurements (100(2) K), X-ray analyses of the first tetranuclear Cu(II)-tpmc complex, single crystal of which corresponded to the [Cu4(succinato)(tpmc)2](ClO4) 6·2C2H5OH·4H2O (1) and of the previously described [Cu2(C6H5COO)tpmc](ClO4) 3·0.5CH3OH·0.5H2O (2) were also done. The complexes crystallize in triclinic P over(1, ̄) (1) and monoclinic P21/c (2) space groups. The geometry around the first Cu(II) coordination sphere in the tetranuclear complex (1) is almost regular square-based pyramidal, while significant distortion around the other metallic center was observed. The angular structural parameter (τ), which is applicable to five coordinate structures as an index of degree of trigonality, was found to be 0.05 and 0.40, respectively. In the binuclear complex (2) the geometry around the first Cu(II) coordination sphere is regular square-based pyramidal (τ = 0.09), while around the other is distorted trigonal bipyramidal (τ = 0.79). In complexes (1) and (2) the bridging carboxylate groups are coordinated to metallic centres in a syn-anti mode. Weak ferromagnetic interactions are observed between copper(II) ions, connected through syn-anti monocarboxylate bridges (2J = +1.26 and +1.84 cm-1 in complexes (1) and (2), respectively). Additional antiferromagnetic interaction through succinato anion (zJ′ = -1.57 cm-1) gives finally rise to antiferromagnetic interactions, observed in magnetic measurements in tetrameric complex (1).",
publisher = "Elsevier",
journal = "Journal of Molecular Structure",
title = "X-ray analyses, spectroscopic and magnetic properties of [Cu4(succinato)(tpmc)2](ClO4) 6·2C2H5OH·4H2O and [Cu2(C6H5COO)tpmc](ClO4) 3·0.5CH3OH·0.5H2O complexes",
volume = "872",
number = "2-3",
pages = "135-144",
doi = "10.1016/j.molstruc.2007.02.028"
}

Vučković, G., Antonijević-Nikolić, M., Lis, T., Mroziński, J., Korabik, M.,& Radanović, D.. (2008). X-ray analyses, spectroscopic and magnetic properties of [Cu4(succinato)(tpmc)2](ClO4) 6·2C2H5OH·4H2O and [Cu2(C6H5COO)tpmc](ClO4) 3·0.5CH3OH·0.5H2O complexes. in Journal of Molecular Structure
Elsevier., 872(2-3), 135-144.
https://doi.org/10.1016/j.molstruc.2007.02.028

Vučković G, Antonijević-Nikolić M, Lis T, Mroziński J, Korabik M, Radanović D. X-ray analyses, spectroscopic and magnetic properties of [Cu4(succinato)(tpmc)2](ClO4) 6·2C2H5OH·4H2O and [Cu2(C6H5COO)tpmc](ClO4) 3·0.5CH3OH·0.5H2O complexes. in Journal of Molecular Structure. 2008;872(2-3):135-144.
doi:10.1016/j.molstruc.2007.02.028 .

Vučković, G., Antonijević-Nikolić, M., Lis, T., Mroziński, J., Korabik, M., Radanović, Dušanka, "X-ray analyses, spectroscopic and magnetic properties of [Cu4(succinato)(tpmc)2](ClO4) 6·2C2H5OH·4H2O and [Cu2(C6H5COO)tpmc](ClO4) 3·0.5CH3OH·0.5H2O complexes" in Journal of Molecular Structure, 872, no. 2-3 (2008):135-144,
https://doi.org/10.1016/j.molstruc.2007.02.028 . .