“…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 ).…”