Syntheses and electrochemistry of incomplete cubane-type clusters with M3S4 cores (M = molybdenum, tungsten). X-ray structures of [W3S4(H2O)9](CH3C6H4SO3)4.cntdot.9H2O, Na2[W3S4(Hnta)3].cntdot.5H2O, and (bpyH)5[W3S4(NCS)9].cntdot.3H2O

Preparation and characterization of molybdenum sulfide supported on β-zeolites obtained from [Mo3S4(H2O)9]4+ precursor

“…The UV-visible spectrum of the Mo 3 S 4 (H 2 O) 9 Cl 4 ÁNH 4 Cl in solid state exhibits three absorption bands with maxima at 254, 382 and 634 nm (Fig. 2), which are consistent with the spectra reported by Ooi et al [7] (248, 366 and 603 nm) and by Shibahara et al [23] (256, 327 and 620 nm). The EXAFS signal of Mo 3 S 4 (H 2 O) 9 Cl 4 at the Mo K-edge (Fig.…”

Supramolecular Assembly of Gelatin and Inorganic Polyanions: Fine-Tuning the Mechanical Properties of Nanocomposites by Varying Their Composition and Microstructure

“…Commercial gelatin extracted from porcine skin (Type A with a bloom of ∼175 g), corresponding to an average molecular weight of ∼40000 g mol −1 and an isoelectric point (IEP) of ∼8 (according to the supplier) was purchased from Sigma−Aldrich. Figure S1 in the SI) have been synthesized according to previous publications 73− 75 and characterized by FT-IR (see Figure S4 and Table 1 78 was checked via FT-IR ( Figure S4 and Table 1 in the SI), 31 P NMR in solution ( Figure S6 in the SI) and 31 79,80 and characterized by FT-IR spectroscopy and 1 H NMR in solution (see Figures S4 and S7, as well as Table 1, in the SI).…”

Synthesis and Characterization of [Mo3S4(NDABu)(HNDABu)2]3– and [Mo3S4(HNDAPr)3]2– Anions as Building Blocks for Organic–Inorganic Hybrid Solids

“…[11,14] The redox potentials E°(mean values between the cathodic and anodic peak potentials) are very similar for the three compounds {-0.55 V for [Mo 3 S 4 (NTA) 3 ] 5-, -0.57 V for [Mo 3 S 4 (NDAPr) 3 ] 5-, and -0.61 V for [Mo 3 S 4 (NDABu) 3 ] 5-}, which is evidence of the weak influence of the ligands on the reduction of Mo IV and of a purely metal-centered reduction process (see Figure 4). ] As previously reported in the literature, all of the compounds exhibited one reversible redox couple assigned to the first reduction state of the {Mo 3 S 4 } cluster.…”

“…[11] All of the reagents were purchased from Aldrich and Alfa Aesar with the best purity available and used as received. [11] All of the reagents were purchased from Aldrich and Alfa Aesar with the best purity available and used as received.…”

“…[7,8] In this context, polyoxometalate (POM) clusters were revealed as good inorganic building blocks because of the diversity in their composition, shape, size, and charge. [11] Interestingly, this cluster contains three hanging carboxylates and six carbonyl functions that are available for further coordination to an electrophilic species. [10] We previously described the use of the triangular chalcogenide-bridged cluster [Mo 3 S 4 (HNTA) 3 ] 2-(NTA 3-= nitrilotriacetate) as a preformed building block to generate metal-organic materials.…”