TY  - JOUR
AU  - Vučković, Gordana
AU  - Tanasković, Slađana
AU  - Antonijević-Nikolić, Mirjana
AU  - Živković-Radovanović, Vukosava
AU  - Gojgić-Cvijović, Gordana
PY  - 2009
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1295
AB  - Four new air-stable mixed-ligand Co(II) complexes having the general formula [Co2(Y)tpmc]Z3×q(H2O/CH3CN) (HY = N-methylglycine/N,N-dimethylglycine, Z = - 4BF , qH2O=4 or 3; HY=S-norvaline/S-valine Z=-ClO4 , qCH3CN = 0.5; qH2O = 0.5; tpmc = N,N',N'',N'''-tetrakis(2-pyridylmethyl)- -1,4,8,11-tetraazacyclotetradecane) were prepared. The composition, some physical and chemical properties and their tentative geometries were evaluated based on elemental analysis (C, H, N), conductometric and magnetic measurements, spectroscopic data (UV/Vis, IR) and cyclic voltammetry. The data were compared with earlier described analogous complexes containing the macrocyclic ligand and aliphatic aminocarboxylates. It is assumed that all complexes are binuclear with an exo coordination mode of the octaazamacrocyclic pendant ligand in the boat conformation. In addition, two -N-(CH2)2-N- portions of the cyclam ring within the tpmc ligand and Co(II) ions in the high-spin state are most probably bridged via oxygen atoms from the anion of the aminocarboxylate/derivatives, whereas nitrogen atoms rest uncoordinated. In all cases, a combined chelate-bridged coordination is proposed as the most probable. The complexes were electrochemically stable in the potential range -1.0 to 1.0 V. They were also preliminary assayed toward some microorganisms together with the ligands, starting simple salts and solvents as test substances. In some cases, certain antimicrobial activity of the complexes was detected.
AB  - Dobijena su četiri nova mešovito-ligandna kompleksa Co(II), stabilna na vazduhu, opšte formule [Co2(Y)tpmc]Z3×q(H2O/CH3CN) (HY = N-metilglicin/N,N-dimetilglicin, Z=-4BF , qH2O=4 ili 3); HY = S-norvalin/S-valin, Z=-ClO4, qCH3CN=0,5; qH2O=0,5; tpmc= N,N',N'',N'''-tetrakis(2-piridilmetil)-1,4,8,11-tetraazaciklotetradekan). Sastav, neka fizička i hemijska svojstva i njihove približne geometrije su izvedene na osnovu elementalne analize (C, H, N), konduktometrijskih i magnetnih merenja, spektroskopskih podataka (UV/Vis, IR) odnosno ciklične voltametrije. Podaci su upoređeni sa ranije opisanim analogim kompleksima koji sadrže makrociklični ligand i alifatične aminokarboksilate. Pretpostavljeno je da su svi kompleksi dinuklearni sa egzo koordinacijom pendantnog oktaazamakrocikla u konformaciji lađe. Pored dva -N-(CH2)2-N- dela ciklamovog prstena unutar tpmc-a, joni visoko-spinskog Co(II) su najverovatnije premošćeni angažovanjem kiseonikovih atoma sa anjona aminokarboksilata/derivata, dok atomi azota ostaju nekoordinovani. Za sve komplekse predložen je kombinovani helatno-mostovni način vezivanja. Kompleksi su bili elektrohemijski stabilni u opsegu potencijala -1,0 do 1,0 V. Oni su preliminarno testirani na mikroorganizme zajedno sa ligandima, polaznim prostim solima i rastvaračima kao test supstancama. U nekim slučajevima je nađena izvesna antimikrobna aktivnost kompleksa.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - A study of novel cobalt(II) octaazamacrocyclic complexes with aminocarboxylates or their derivatives
T1  - Proučavanje novih kompleksa kobalta(II) sa oktaazamakrociklom i aminokarboksilatima ili njihovim derivatima
VL  - 74
IS  - 6
SP  - 629
EP  - 640
DO  - 10.2298/JSC0906629V
ER  - 

@article{
author = "Vučković, Gordana and Tanasković, Slađana and Antonijević-Nikolić, Mirjana and Živković-Radovanović, Vukosava and Gojgić-Cvijović, Gordana",
year = "2009",
abstract = "Four new air-stable mixed-ligand Co(II) complexes having the general formula [Co2(Y)tpmc]Z3×q(H2O/CH3CN) (HY = N-methylglycine/N,N-dimethylglycine, Z = - 4BF , qH2O=4 or 3; HY=S-norvaline/S-valine Z=-ClO4 , qCH3CN = 0.5; qH2O = 0.5; tpmc = N,N',N'',N'''-tetrakis(2-pyridylmethyl)- -1,4,8,11-tetraazacyclotetradecane) were prepared. The composition, some physical and chemical properties and their tentative geometries were evaluated based on elemental analysis (C, H, N), conductometric and magnetic measurements, spectroscopic data (UV/Vis, IR) and cyclic voltammetry. The data were compared with earlier described analogous complexes containing the macrocyclic ligand and aliphatic aminocarboxylates. It is assumed that all complexes are binuclear with an exo coordination mode of the octaazamacrocyclic pendant ligand in the boat conformation. In addition, two -N-(CH2)2-N- portions of the cyclam ring within the tpmc ligand and Co(II) ions in the high-spin state are most probably bridged via oxygen atoms from the anion of the aminocarboxylate/derivatives, whereas nitrogen atoms rest uncoordinated. In all cases, a combined chelate-bridged coordination is proposed as the most probable. The complexes were electrochemically stable in the potential range -1.0 to 1.0 V. They were also preliminary assayed toward some microorganisms together with the ligands, starting simple salts and solvents as test substances. In some cases, certain antimicrobial activity of the complexes was detected., Dobijena su četiri nova mešovito-ligandna kompleksa Co(II), stabilna na vazduhu, opšte formule [Co2(Y)tpmc]Z3×q(H2O/CH3CN) (HY = N-metilglicin/N,N-dimetilglicin, Z=-4BF , qH2O=4 ili 3); HY = S-norvalin/S-valin, Z=-ClO4, qCH3CN=0,5; qH2O=0,5; tpmc= N,N',N'',N'''-tetrakis(2-piridilmetil)-1,4,8,11-tetraazaciklotetradekan). Sastav, neka fizička i hemijska svojstva i njihove približne geometrije su izvedene na osnovu elementalne analize (C, H, N), konduktometrijskih i magnetnih merenja, spektroskopskih podataka (UV/Vis, IR) odnosno ciklične voltametrije. Podaci su upoređeni sa ranije opisanim analogim kompleksima koji sadrže makrociklični ligand i alifatične aminokarboksilate. Pretpostavljeno je da su svi kompleksi dinuklearni sa egzo koordinacijom pendantnog oktaazamakrocikla u konformaciji lađe. Pored dva -N-(CH2)2-N- dela ciklamovog prstena unutar tpmc-a, joni visoko-spinskog Co(II) su najverovatnije premošćeni angažovanjem kiseonikovih atoma sa anjona aminokarboksilata/derivata, dok atomi azota ostaju nekoordinovani. Za sve komplekse predložen je kombinovani helatno-mostovni način vezivanja. Kompleksi su bili elektrohemijski stabilni u opsegu potencijala -1,0 do 1,0 V. Oni su preliminarno testirani na mikroorganizme zajedno sa ligandima, polaznim prostim solima i rastvaračima kao test supstancama. U nekim slučajevima je nađena izvesna antimikrobna aktivnost kompleksa.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "A study of novel cobalt(II) octaazamacrocyclic complexes with aminocarboxylates or their derivatives, Proučavanje novih kompleksa kobalta(II) sa oktaazamakrociklom i aminokarboksilatima ili njihovim derivatima",
volume = "74",
number = "6",
pages = "629-640",
doi = "10.2298/JSC0906629V"
}

Vučković, G., Tanasković, S., Antonijević-Nikolić, M., Živković-Radovanović, V.,& Gojgić-Cvijović, G.. (2009). A study of novel cobalt(II) octaazamacrocyclic complexes with aminocarboxylates or their derivatives. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 74(6), 629-640.
https://doi.org/10.2298/JSC0906629V

Vučković G, Tanasković S, Antonijević-Nikolić M, Živković-Radovanović V, Gojgić-Cvijović G. A study of novel cobalt(II) octaazamacrocyclic complexes with aminocarboxylates or their derivatives. in Journal of the Serbian Chemical Society. 2009;74(6):629-640.
doi:10.2298/JSC0906629V .

Vučković, Gordana, Tanasković, Slađana, Antonijević-Nikolić, Mirjana, Živković-Radovanović, Vukosava, Gojgić-Cvijović, Gordana, "A study of novel cobalt(II) octaazamacrocyclic complexes with aminocarboxylates or their derivatives" in Journal of the Serbian Chemical Society, 74, no. 6 (2009):629-640,
https://doi.org/10.2298/JSC0906629V . .

TY  - JOUR
AU  - Vucković, Gordana
AU  - Tanasković, Slađana
AU  - Miodragović, Zoran M.
AU  - Stanić, V.
PY  - 2007
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/996
AB  - Three new binuclear Co(II) mixed-ligand complexes with N,N′,N′′,N′′′-tetrakis( 2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane (tpmc) and mono- or dicarboxylate ligands were prepared and some of their physical properties were determined. The general formulas: [Co2(HCOO)2tpmc](ClO4)2·4H2O, [Co2(CH3COO)2tpmc](ClO4)2 and [Co2(tpht)tpmc](ClO4)2·4H2O (tphtH2 = terephthalic acid) were proposed on the basis of elemental analyses (C,H,N) and molar conductivity. UV/Vis absorption and IR spectra, magnetic and CV measurements were used to study their geometries and properties. For the monocarboxylate complexes, an exo coordination of Co(II) with four nitrogens from tpmc and bis-bidentate bonded HCOO-/CH3COO- in the trans position is assumed. Tpmc adopts the chair conformation. For the dicarboxylate complex, it is supposed that a terephthalate dianion, as well as methylene chains from cyclam bridge two Co(II) atoms, while tpmc is in the boat conformation. The complexes were stable against chemical and electrochemical oxidation of Co(II) to Co(III). The data are compared with those for the previously published Cu(II) complexes containing the corresponding ligands and mutual similarities or differences were considered. Finally, some antibacterial activity of the complexes was found.
AB  - Dobijena su tri nova dinuklearna Co(II) mešovito-ligandna kompleksa sa N,N′,N′′,N′′′- -tetrakis(2-piridilmetil)-1,4,8,11-tetraazaciklotetradekanom (tpmc) i mono- ili dikarboksilato ligandima i određena su neka njihova fizička svojstva. Opšte formule: [Co2(HCOO)2tpmc](ClO4)2·4H2O, [Co2(CH3COO)2tpmc](ClO4)2 i [Co2(tpht)tpmc](ClO4)2·4H2O (tphtH2 = tereftalna kiselina) predložene su na osnovu rezultata analize (C,H,N) i merenja molarne električne provodljivosti. UV/Vis i IR spektri, magnetna i CV merenja korišćena su za proučavanje geometrije i osobina ovih jedinjenja. Za monokarboksilatne komplekse predložena je exo koordinacija Co(II) sa četiri azotova atoma tpmc-a i bis-bidentatno vezanim HCOO¯/CH3COO¯) u trans položaju. Tpmc zauzima konformaciju stolice. Pretpostavljeno je da tereftalatni dianjon, kao i metilenske grupe ciklama premošćuju dva atoma Co(II), a tpmc je u konformaciji lađe. Kompleksi su stabilni prema hemijskoj i elektrohemijskoj oksidaciji Co(II) u Co(III). Podaci su upoređeni sa ranije objavljenim Cu(II) kompleksima koji sadrže odgovarajuće ligande i razmatrane su međusobne sličnosti i razlike. Najzad, utvrđena je izvesna antimikrobna aktivnost kompleksa.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - High-spin binuclear Co(II) complexes with a pendant octaazamaclocycle and carboxylates
T1  - Visokospinski Co(II) kompleksi sa pendantnim oktaazamakrociklom i karboksilatima
VL  - 72
IS  - 12
SP  - 1295
EP  - 1308
DO  - 10.2298/JSC0712295V
ER  - 

@article{
author = "Vucković, Gordana and Tanasković, Slađana and Miodragović, Zoran M. and Stanić, V.",
year = "2007",
abstract = "Three new binuclear Co(II) mixed-ligand complexes with N,N′,N′′,N′′′-tetrakis( 2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane (tpmc) and mono- or dicarboxylate ligands were prepared and some of their physical properties were determined. The general formulas: [Co2(HCOO)2tpmc](ClO4)2·4H2O, [Co2(CH3COO)2tpmc](ClO4)2 and [Co2(tpht)tpmc](ClO4)2·4H2O (tphtH2 = terephthalic acid) were proposed on the basis of elemental analyses (C,H,N) and molar conductivity. UV/Vis absorption and IR spectra, magnetic and CV measurements were used to study their geometries and properties. For the monocarboxylate complexes, an exo coordination of Co(II) with four nitrogens from tpmc and bis-bidentate bonded HCOO-/CH3COO- in the trans position is assumed. Tpmc adopts the chair conformation. For the dicarboxylate complex, it is supposed that a terephthalate dianion, as well as methylene chains from cyclam bridge two Co(II) atoms, while tpmc is in the boat conformation. The complexes were stable against chemical and electrochemical oxidation of Co(II) to Co(III). The data are compared with those for the previously published Cu(II) complexes containing the corresponding ligands and mutual similarities or differences were considered. Finally, some antibacterial activity of the complexes was found., Dobijena su tri nova dinuklearna Co(II) mešovito-ligandna kompleksa sa N,N′,N′′,N′′′- -tetrakis(2-piridilmetil)-1,4,8,11-tetraazaciklotetradekanom (tpmc) i mono- ili dikarboksilato ligandima i određena su neka njihova fizička svojstva. Opšte formule: [Co2(HCOO)2tpmc](ClO4)2·4H2O, [Co2(CH3COO)2tpmc](ClO4)2 i [Co2(tpht)tpmc](ClO4)2·4H2O (tphtH2 = tereftalna kiselina) predložene su na osnovu rezultata analize (C,H,N) i merenja molarne električne provodljivosti. UV/Vis i IR spektri, magnetna i CV merenja korišćena su za proučavanje geometrije i osobina ovih jedinjenja. Za monokarboksilatne komplekse predložena je exo koordinacija Co(II) sa četiri azotova atoma tpmc-a i bis-bidentatno vezanim HCOO¯/CH3COO¯) u trans položaju. Tpmc zauzima konformaciju stolice. Pretpostavljeno je da tereftalatni dianjon, kao i metilenske grupe ciklama premošćuju dva atoma Co(II), a tpmc je u konformaciji lađe. Kompleksi su stabilni prema hemijskoj i elektrohemijskoj oksidaciji Co(II) u Co(III). Podaci su upoređeni sa ranije objavljenim Cu(II) kompleksima koji sadrže odgovarajuće ligande i razmatrane su međusobne sličnosti i razlike. Najzad, utvrđena je izvesna antimikrobna aktivnost kompleksa.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "High-spin binuclear Co(II) complexes with a pendant octaazamaclocycle and carboxylates, Visokospinski Co(II) kompleksi sa pendantnim oktaazamakrociklom i karboksilatima",
volume = "72",
number = "12",
pages = "1295-1308",
doi = "10.2298/JSC0712295V"
}

Vucković, G., Tanasković, S., Miodragović, Z. M.,& Stanić, V.. (2007). High-spin binuclear Co(II) complexes with a pendant octaazamaclocycle and carboxylates. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 72(12), 1295-1308.
https://doi.org/10.2298/JSC0712295V

Vucković G, Tanasković S, Miodragović ZM, Stanić V. High-spin binuclear Co(II) complexes with a pendant octaazamaclocycle and carboxylates. in Journal of the Serbian Chemical Society. 2007;72(12):1295-1308.
doi:10.2298/JSC0712295V .

Vucković, Gordana, Tanasković, Slađana, Miodragović, Zoran M., Stanić, V., "High-spin binuclear Co(II) complexes with a pendant octaazamaclocycle and carboxylates" in Journal of the Serbian Chemical Society, 72, no. 12 (2007):1295-1308,
https://doi.org/10.2298/JSC0712295V . .

TY  - JOUR
AU  - Vucković, Gordana
AU  - Tanasković, Slađana
AU  - Rychlewska, U.
AU  - Radanović, Dušanka
AU  - Mrozinski, J.
AU  - Korabik, M.
PY  - 2007
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/962
AB  - A novel binuclear Co(II) complex, [Co-2(Cl)(2)tpmc](BF4)(2) (tpmc=N,N,N",N"'-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane), was prepared and structurally characterized by X-ray diffraction analysis at low temperature. The complex crystallizes in P2(1)/c space group of the monoclinic crystal system, and its crystals are isomorphic with those Of [Cu-2(Br)(2)tpmc](ClO4)(2) complex. In the crystal structure the complex cations [Co-2(Cl)(2)tpmc](2+) are settled around the inversion centres. Cobalt(II) is exo coordinated with four macrocyclic N atoms, and Cl- supplements the fifth coordination site. Based on the index of trigonality, the coordination polyhedron formed around Co(II) ion is described as distorted trigonal bipyramid. Two metal centres are at a distance of 5.710 angstrom. This is the first Co(II) complex for which X-ray analysis confirmed a chair conformation of tpmc ligand. IR, EPR (X-band) and UV/VIS absorption and reflectance spectra, molar conductivities and magnetic measurements (SQUID) are used to study the investigated complex. A comparative structural analysis with some of the described Co(II) and Cu(II) complexes of analogous geometries and type of pendant azamacrocyclic ligands was also done.
PB  - Elsevier Science BV, Amsterdam
T2  - Journal of Molecular Structure
T1  - Preparation, characterization and X-ray analysis of [Co-2(Cl)(2)tpmc](BF4)(2). Comparative structural analysis with the complexes having analogous geometries and ligands
VL  - 827
IS  - 1-3
SP  - 80
EP  - 87
DO  - 10.1016/j.molstruc.2006.05.009
ER  - 

@article{
author = "Vucković, Gordana and Tanasković, Slađana and Rychlewska, U. and Radanović, Dušanka and Mrozinski, J. and Korabik, M.",
year = "2007",
abstract = "A novel binuclear Co(II) complex, [Co-2(Cl)(2)tpmc](BF4)(2) (tpmc=N,N,N",N"'-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane), was prepared and structurally characterized by X-ray diffraction analysis at low temperature. The complex crystallizes in P2(1)/c space group of the monoclinic crystal system, and its crystals are isomorphic with those Of [Cu-2(Br)(2)tpmc](ClO4)(2) complex. In the crystal structure the complex cations [Co-2(Cl)(2)tpmc](2+) are settled around the inversion centres. Cobalt(II) is exo coordinated with four macrocyclic N atoms, and Cl- supplements the fifth coordination site. Based on the index of trigonality, the coordination polyhedron formed around Co(II) ion is described as distorted trigonal bipyramid. Two metal centres are at a distance of 5.710 angstrom. This is the first Co(II) complex for which X-ray analysis confirmed a chair conformation of tpmc ligand. IR, EPR (X-band) and UV/VIS absorption and reflectance spectra, molar conductivities and magnetic measurements (SQUID) are used to study the investigated complex. A comparative structural analysis with some of the described Co(II) and Cu(II) complexes of analogous geometries and type of pendant azamacrocyclic ligands was also done.",
publisher = "Elsevier Science BV, Amsterdam",
journal = "Journal of Molecular Structure",
title = "Preparation, characterization and X-ray analysis of [Co-2(Cl)(2)tpmc](BF4)(2). Comparative structural analysis with the complexes having analogous geometries and ligands",
volume = "827",
number = "1-3",
pages = "80-87",
doi = "10.1016/j.molstruc.2006.05.009"
}

Vucković, G., Tanasković, S., Rychlewska, U., Radanović, D., Mrozinski, J.,& Korabik, M.. (2007). Preparation, characterization and X-ray analysis of [Co-2(Cl)(2)tpmc](BF4)(2). Comparative structural analysis with the complexes having analogous geometries and ligands. in Journal of Molecular Structure
Elsevier Science BV, Amsterdam., 827(1-3), 80-87.
https://doi.org/10.1016/j.molstruc.2006.05.009

Vucković G, Tanasković S, Rychlewska U, Radanović D, Mrozinski J, Korabik M. Preparation, characterization and X-ray analysis of [Co-2(Cl)(2)tpmc](BF4)(2). Comparative structural analysis with the complexes having analogous geometries and ligands. in Journal of Molecular Structure. 2007;827(1-3):80-87.
doi:10.1016/j.molstruc.2006.05.009 .

Vucković, Gordana, Tanasković, Slađana, Rychlewska, U., Radanović, Dušanka, Mrozinski, J., Korabik, M., "Preparation, characterization and X-ray analysis of [Co-2(Cl)(2)tpmc](BF4)(2). Comparative structural analysis with the complexes having analogous geometries and ligands" in Journal of Molecular Structure, 827, no. 1-3 (2007):80-87,
https://doi.org/10.1016/j.molstruc.2006.05.009 . .