Substituent-dependent coordination modes of 1-methyl-5-R-tetrazoles in their cupric chloride complexes

Войтехович, Сергей В.; Lyakhov, Alexander S.; Матулис, Вадим Э.; Ivashkevich, Ludmila S.; Ивашкевич, Олег А.

doi:10.1016/j.poly.2019.01.009

Cited by 10 publications

(3 citation statements)

References 67 publications

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“…Figure 5 and Figure 6 show the k 2 -weight EXAFS spectra fitted with the EXCURVE program [ 24 ], with the Δk ranging from 3 to 11 Å −1 . The initial models of the EXAFS spectra were based on the XRD data for the mononuclear Cu(L 1 ) 2 Br 2 complex and cupric chloride complex representing a 1D coordination polymer, which was formed at the expense of the triple bridge between two neighbouring copper(II) cations (double chlorido bridge and the tetrazole ring N3,N4-bridge) [ 25 ]. EXAFS fitting results are presented in Table 2 for complex 3 and in Table 3 for 4 .…”

Section: Resultsmentioning

confidence: 99%

Synthesis, Structure, and Magnetic and Biological Properties of Copper(II) Complexes with 1,3,4-Thiadiazole Derivatives

Lavrenova,

Sukhikh,

Glinskaya

et al. 2023

IJMS

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New coordination compounds of copper(II) with 2,5-bis(ethylthio)-1,3,4-thiadiazole (L1) and 2,5-bis(pyridylmethylthio)-1,3,4-thiadiazole (L2) with compositions Cu(L1)2Br2, Cu(L1)(C2N3)2, Cu(L2)Cl2, and Cu(L2)Br2 were prepared. The complexes were identified and studied by CHN analysis, infrared (IR) spectroscopy, powder X-Ray diffraction (XRD), and static magnetic susceptibility. The crystal structures of Cu(II) complexes with L1 were determined. The structures of the coordination core of complexes Cu(L2)Cl2 and Cu(L2)Br2 were determined by Extended X-ray absorption fine structure (EXAFS) spectroscopy. Magnetization measurements have revealed various magnetic states in the studied complexes, ranging from an almost ideal paramagnet in Cu(L1)2Br2 to alternating-exchange antiferromagnetic chains in Cu(L1)(C2N3)2, where double dicyanamide bridges provide an unusually strong exchange interaction (J1/kB ≈ −23.5 K; J2/kB ≈ −20.2 K) between Cu(II) ions. The cytotoxic activity of copper(II) complexes with L2 was estimated on the human cell lines of breast adenocarcinoma (MCF-7) and hepatocellular carcinoma (HepG2).

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Section: Resultsmentioning

confidence: 99%

Synthesis, Structure, and Magnetic and Biological Properties of Copper(II) Complexes with 1,3,4-Thiadiazole Derivatives

Lavrenova,

Sukhikh,

Glinskaya

et al. 2023

IJMS

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“…Moreover, the bulkiness of this substituent influences the crystal structure of complexes formed. This is illustrated by the formation of complex of type II , while other 1‐R‐tetrazoles (R = Me, Et) react with copper(II) chloride generating complexes of type I . In the presented study, we also obtained and characterized a novel complex [Cu(tbt)Cl 2 ] n , which belongs to a new type of copper(II) halide complexes with 1‐R‐tetrazoles, other than those presented in the Scheme .…”

Section: Introductionmentioning

confidence: 83%

“…1‐Monosubstituted tetrazoles demonstrate wide variety of structural types of copper(II) halide complexes . Main types I – VIII are shown in Scheme .…”

Section: Introductionmentioning

confidence: 99%

Halido‐bridged Copper(II) Complexes with 1‐tert‐Butyl‐1H‐tetrazole: Crystal Structure and Magnetic Properties

Войтехович

Degtyarik

Lyakhov

et al. 2020

Zeitschrift anorg allge chemie

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Complex [Cu(tbt)Cl2]n (tbt = 1‐tert‐butyl‐1H‐tetrazole) was prepared by reaction of tbt with copper(II) chloride in solution. According to single‐crystal X‐ray analysis, this complex presents 1D coordination polymer, formed at the expense of double chlorido bridges between neighboring pentacoordinate copper(II) cations. 1‐tert‐Butyl‐1H‐tetrazole acts as monodentate ligand coordinated by CuII cations via the heteroring N4 atoms. The temperature‐dependent magnetic susceptibility measurements of novel complex [Cu(tbt)Cl2]n as well as described previously 1D coordination polymer [Cu(tbt)2Cl2]n, and linear trinuclear complex [Cu3(tbt)6Br6], were carried out. Magnetic studies revealed that the copper(II) ions were weakly ferromagnetically coupled in polymeric copper(II) chloride complexes, whereas complex [Cu3(tbt)6Br6] showed antiferromagnetic coupling.

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Tetrazoles

Островский

Popova

Trifonov

2022

Comprehensive Heterocyclic Chemistry IV

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Substituent-dependent coordination modes of 1-methyl-5-R-tetrazoles in their cupric chloride complexes

Cited by 10 publications

References 67 publications

Synthesis, Structure, and Magnetic and Biological Properties of Copper(II) Complexes with 1,3,4-Thiadiazole Derivatives

Synthesis, Structure, and Magnetic and Biological Properties of Copper(II) Complexes with 1,3,4-Thiadiazole Derivatives

Halido‐bridged Copper(II) Complexes with 1‐tert‐Butyl‐1H‐tetrazole: Crystal Structure and Magnetic Properties

Tetrazoles

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