Syntheses, structures and properties of copper(II) and cobalt(II) complexes with 5(3)-amino-2-chloro-3(5)-methylpyridine isomer cations

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Syntheses, structures and properties of copper(II) and cobalt(II) complexes with 5(3)-amino-2-chloro-3(5)-methylpyridine isomer cations. / Shakirova, Olga; Protsenko, Alexandra; Protsenko, Alexander et al.

In: Inorganica Chimica Acta, Vol. 500, 119246, 24.01.2020.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{c910c2f9c80a4e618b025ba43923b0f3,

title = "Syntheses, structures and properties of copper(II) and cobalt(II) complexes with 5(3)-amino-2-chloro-3(5)-methylpyridine isomer cations",

abstract = "New coordination compounds of copper(II) and cobalt(II) with 5-amino-2-chloro-3-methylpyridine (L1) and 3-amino-2-chloro-5-methylpyridine (L2) of the following composition: (HL1)2[CuCl4] (1), (HL1)2[CoCl4]·HCl·H2O (2), (HL2)2[CuCl4]·H2O (3), (HL2)2[CuCl4]·2H2O (4) and (HL2)2[CoCl4] (5), have been synthesized. In an acetone environment, L1 may undergo a Schiff condensation reaction and the product of its complexation [CuL1*Cl3] (6) was also obtained. The compounds have been investigated by single-crystal X-ray diffraction, simultaneous TG–DSC analysis, IR and diffuse reflectance spectroscopy, and temperature-dependent magnetic susceptibility measurements. Exchange interactions between the unpaired electrons of the metal ions have a different character depending on the composition of the complexes. For the Cu(II) compounds: 1, 2D-ferromagnetic layer, J = 13.53(15) K; 3, strong-rung ladder, Jrung = −7.26(1) K, Jrail = −1.87(2) K; 4, uniform chain, J = −4.1(1) K. The magnetic properties of the Co(II) compounds are dominated by single-ion anisotropy with D = −22(1) K (2) and −8.7(2) K (5). The copper(II) complexes show thermochromic behavior.",

keywords = "Cobalt(II), Copper(II), Magnetochemistry, Spectroscopy, Structure, Synthesis",

author = "Olga Shakirova and Alexandra Protsenko and Alexander Protsenko and Natalia Kuratieva and Samantha Fowles and Turnbull, {Mark M.}",

year = "2020",

month = jan,

day = "24",

doi = "10.1016/j.ica.2019.119246",

language = "English",

volume = "500",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Syntheses, structures and properties of copper(II) and cobalt(II) complexes with 5(3)-amino-2-chloro-3(5)-methylpyridine isomer cations

AU - Shakirova, Olga

AU - Protsenko, Alexandra

AU - Protsenko, Alexander

AU - Kuratieva, Natalia

AU - Fowles, Samantha

AU - Turnbull, Mark M.

PY - 2020/1/24

Y1 - 2020/1/24

N2 - New coordination compounds of copper(II) and cobalt(II) with 5-amino-2-chloro-3-methylpyridine (L1) and 3-amino-2-chloro-5-methylpyridine (L2) of the following composition: (HL1)2[CuCl4] (1), (HL1)2[CoCl4]·HCl·H2O (2), (HL2)2[CuCl4]·H2O (3), (HL2)2[CuCl4]·2H2O (4) and (HL2)2[CoCl4] (5), have been synthesized. In an acetone environment, L1 may undergo a Schiff condensation reaction and the product of its complexation [CuL1*Cl3] (6) was also obtained. The compounds have been investigated by single-crystal X-ray diffraction, simultaneous TG–DSC analysis, IR and diffuse reflectance spectroscopy, and temperature-dependent magnetic susceptibility measurements. Exchange interactions between the unpaired electrons of the metal ions have a different character depending on the composition of the complexes. For the Cu(II) compounds: 1, 2D-ferromagnetic layer, J = 13.53(15) K; 3, strong-rung ladder, Jrung = −7.26(1) K, Jrail = −1.87(2) K; 4, uniform chain, J = −4.1(1) K. The magnetic properties of the Co(II) compounds are dominated by single-ion anisotropy with D = −22(1) K (2) and −8.7(2) K (5). The copper(II) complexes show thermochromic behavior.

AB - New coordination compounds of copper(II) and cobalt(II) with 5-amino-2-chloro-3-methylpyridine (L1) and 3-amino-2-chloro-5-methylpyridine (L2) of the following composition: (HL1)2[CuCl4] (1), (HL1)2[CoCl4]·HCl·H2O (2), (HL2)2[CuCl4]·H2O (3), (HL2)2[CuCl4]·2H2O (4) and (HL2)2[CoCl4] (5), have been synthesized. In an acetone environment, L1 may undergo a Schiff condensation reaction and the product of its complexation [CuL1*Cl3] (6) was also obtained. The compounds have been investigated by single-crystal X-ray diffraction, simultaneous TG–DSC analysis, IR and diffuse reflectance spectroscopy, and temperature-dependent magnetic susceptibility measurements. Exchange interactions between the unpaired electrons of the metal ions have a different character depending on the composition of the complexes. For the Cu(II) compounds: 1, 2D-ferromagnetic layer, J = 13.53(15) K; 3, strong-rung ladder, Jrung = −7.26(1) K, Jrail = −1.87(2) K; 4, uniform chain, J = −4.1(1) K. The magnetic properties of the Co(II) compounds are dominated by single-ion anisotropy with D = −22(1) K (2) and −8.7(2) K (5). The copper(II) complexes show thermochromic behavior.

KW - Cobalt(II)

KW - Copper(II)

KW - Magnetochemistry

KW - Spectroscopy

KW - Structure

KW - Synthesis

UR - http://www.scopus.com/inward/record.url?scp=85074659803&partnerID=8YFLogxK

U2 - 10.1016/j.ica.2019.119246

DO - 10.1016/j.ica.2019.119246

M3 - Article

AN - SCOPUS:85074659803

VL - 500

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

M1 - 119246

ER -

ID: 22318873