Synthesis, structure, and antimicrobial properties of mixed-metal organometallic polyoxometalates [Cp*₂M₅VO₁₇]⁻(M = Mo, W)

Synthesis and characterization of Anderson-Evans type polyoxometalates, antibacterial properties

“…3 and 4 revealed the methyl protons (δ 2.05 3 ) (2.20 4 ); -NH 2 signals (δ 3.34); methylene signals (δ 6.49, 6.62 and 6.90 3 ) (δ 6.89, 6.98 and 7.10 4 ). The 1 H NMR results are in agreement with those from previous study [ 9 , 45 ]. The 31 P NMR spectrum of 1 and 2 were recorded in dimethyl sulfoxide (DMSO-d 6 ) and are depicted in Figures S9 and S10 .…”

Electrochemical and Structural Characterization of Soft Landed Tungsten‐Substituted Lindqvist Polyoxovanadate‐Alkoxides

“…A previous study of soft‐landed W‐POM shows the W=O t band at 981 cm −1 , which is close in value to the M=O t bands seen in Figure 3B [57] . In the IRRAS spectrum of WV 5 a new band is observed at 817 cm −1 (Figure 3B), which is assigned as the asymmetric O−W‐O stretching mode that is typically observed in infrared spectra of tungsten oxides at ∼820 cm −1 [16,48,58–60] . We also observe that the M=O t band splits into at least two peaks in the spectrum of WV 5 in Figure 3B.…”

“…[57] In the IRRAS spectrum of WV 5 a new band is observed at 817 cm À 1 (Figure 3B), which is assigned as the asymmetric OÀ W-O stretching mode that is typically observed in infrared spectra of tungsten oxides at ~820 cm À 1 . [16,48,[58][59][60] We also observe that the M=O t band splits into at least two peaks in the spectrum of WV 5 in Figure 3B. Similarly, the O b À CH 3 stretching band shifts and broadens as tungsten is substituted into the core.…”

Epoxidation of Cis‐cyclooctene with Hydrogen Peroxide Catalyzed by Lindqvist Type Polyoxometalates

“… [20] . In recent years, η 5 ‐pentamethylcyclopentadienyl (Cp*, η 5 ‐C 5 Me 5 ) involving Lindqvist type POMs such as [Cp* 2 W 6 O 17 ], [21] [ n‐ Bu 4 N][Mo 6 Cp*O 18 ] synthesis and electrochemical properties, [22] Cp* 2 Mo 6 O 17 , [23] Cp* 2 Mo x W 6−x O 17 (x=0, 2, 4, 6) [24] and [Cp*Mo x W 6−x O 18 ] − (x=0, 1, 5, 6), [25] [Cp 2 *M 5 VO 17 ] − (M=Mo, W) [26] synthesis and antimicrobial properties have been reported.…”

“…Heterometallic/Homo Lindqvist type POMs [M'(L)M 5 O 18 ] nÀ (M=W, Mo; M'=Nb, V, Mo, W, Ta) can be obtained by replacing the MO t unit (O t , the terminal oxygen) with the organometallic type M'L (L = ligand, e. g. O 2À , RO À , Cp*, etc.). [20] In recent years, η 5 -pentamethylcyclopentadienyl (Cp*, η 5 -C 5 Me 5 ) involving Lindqvist type POMs such as [Cp* 2 W 6 O 17 ], [21] [n-Bu 4 N][Mo 6 Cp*O 18 ] synthesis and electrochemical properties, [22] Cp* 2 Mo 6 O 17 , [23] Cp* 2 Mo x W 6À x O 17 (x = 0, 2, 4, 6) [24] and [Cp*Mo x W 6À x O 18 ] À (x = 0, 1, 5, 6), [25] [Cp 2 *M 5 VO 17 ] À (M=Mo, W) [26] synthesis and antimicrobial properties have been reported.…”