Magneto-structural correlations of cyclo-tetravanadates functionalized with mixed-ligand copper(ii) complexes

Abstract

Tetravanadate [V4O12]4- anion, one of the cyclic polyoxovanadates formed by condensation of VO4 units, was used as bidentate bridging ligand to design bimetallic materials from its functionalization with copper(II) complexes...

Tris(2-Pyridylmethylamine)V(O)2 Complexes as Counter Ions of Diprotonated Decavanadate Anion: Potential Antineoplastic Activity

“…These stretching vibrations agree with the terminal V=O groups present in related oxidovanadium(V) complexes ( Biçer et al, 2017 ). The medium intensity bands at 840, 800, and 730 cm −1 corresponds to the asymmetric vibrations of the bonds (V–O b –V), where the oxygen atom bridge two vanadium ions, while the three bands at 570, 510, and 430 cm −1 reveal symmetric vibration modes of the bonds (V–O b –V), in agreement with other FTIR spectra reported previously for related compounds ( Guilherme et al, 2010 ), ( Sánchez-Lara et al, 2014 ; Sánchez-Lara et al, 2015 ; Sánchez-Lara et al, 2016; Sánchez-Lara et al, 2018 ; Sánchez-Lara et al, 2019 ; Sánchez-Lara et al, 2021 ), ( García-García et al, 2021 ).…”

“…Recently, our research group has been involved in the synthesis and experimental and theoretical characterization of decavanadates and cyclo-tetravanadates as potential metallo-prodrugs for the treatment of diabetes and cancer ( Sánchez-Lara et al, 2015 ; Sánchez-Lara et al, 2019 ; Sánchez-Lara et al, 2021 ), ( Martínez-Valencia et al, 2020 ), ( Martínez-Valencia et al, 2020 ), ( Corona-Motolinia et al, 2020 ), and ( García-García et al, 2021 ). We attempted to synthesize a protonated tris(2-pyridoniummehtyl)amine decavanadate to find new candidates under mild hydrothermal conditions.…”

“…,(Sánchez-Lara et al, 2014;Sánchez-Lara et al, 2015;Sánchez-Lara et al, 2016;Sánchez-Lara et al, 2018;Sánchez-Lara et al, 2019;Sánchez-Lara et al, 2021),(García-García et al, 2021).…”

Magnetostructural Dependencies in 3d2Systems: The Trigonal Bipyramidal V3+Complex

“…Let us emphasize that the compound's magnetic behavior is tightly related to the type, number, and coordination of ligands with respect to the composing magnetic centers. [ 25–27 ] These have been the subject of extensive interest; here we mention only some prominent and most recent examples, such as the mononuclear β ‐diketonate single molecular magnet, [ 28 ] tetranuclear lanthanide metallocene complexes, [ 29 ] the tetravanadate anion‐bridged complexes, [ 30 ] and the single‐ion one. [ 31 ] For an overview on the properties of ‐type systems, the reader may consult other studies.…”

Magnetostructural Dependencies in $3d^2$ Systems: The Trigonal Bipyramidal V$^{3+}$ Complex

“…Let's emphasize that the compound's magnetic behavior is tightly related to the type, number and coordination of ligands with respect to the composing magnetic centers [25][26][27]. These has been the subject of extensive interest, here we mention only some prominent and most recent examples, such as the mononuclear β-diketonate Dy 3+ single molecular magnet [28], tetranuclear lanthanide metallocene complexes [29], the tetravanadate [V 4 O 12 ] 4− anion bridged Cu 2+ complexes [30] and the single-ion Co 2+ one [31]. For an overview on the properties of 3d 2 type systems the reader may consult Refs.…”