2 research outputs found
Two Compounds Constructed from Bimolybdenum-Capped Sandwich-Type Tetra-Ni-molybdogermanate and N‑Donor Multidentate Ligand
No full textTwo
organic–inorganic hybrid bimolybdenum-capped tetra-Ni<sup>II</sup> sandwich-type molybdogermanates, namely, (H<sub>2</sub>L)<sub>4</sub>[Ni<sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>Â{B-α-GeMo<sub>9</sub>O<sub>34</sub> (MoO<sub>2</sub>)}<sub>2</sub>]·6H<sub>2</sub>O (<b>1</b>), [Ni<sub>2</sub>(HL)<sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>]Â[Ni<sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>Â{B-α-GeMo<sub>9</sub>O<sub>34</sub>(MoO<sub>2</sub>)}<sub>2</sub>]·12H<sub>2</sub>O (<b>2</b>), L = 2,4,5-triÂ(4-pyridyl)Âimidazole,
were prepared with hydrothermal synthesis method and characterized
by elemental analysis, IR spectroscopy, powder X-ray diffraction,
thermogravimetric analysis, and single-crystal X-ray diffraction.
Their magnetic properties and electrochemical properties were investigated.
The results show that compounds <b>1</b> and <b>2</b> contain
a new bimolybdenum-capped sandwich-type heteropolymolybdate anion,
[Ni<sub>4</sub>(H<sub>2</sub>O)<sub>2</sub>Â{B-α-GeMo<sub>9</sub>O<sub>34</sub>(MoO<sub>2</sub>)}<sub>2</sub>]<sup>8–</sup>. The compound <b>1</b> is a zero-dimensional supramolecular
compound, and the supramolecular architecture of compound <b>2</b> is constructed from covalent layers through hydrogen bonds and π–π
interaction. The two compounds both present electrocatalytic activities
for the reduction of nitrite
Functionalized Pentamolybdodiphosphate-Based Inorganic–Organic Hybrids: Synthesis, Structure, and Properties
No full textThree
inorganic–organic hybrid compounds based on functionalized
pentamolybdodiphosphonopropionate anion [(HO<sub>2</sub>CC<sub>2</sub>H<sub>4</sub>PO<sub>3</sub>)<sub>2</sub>Mo<sub>5</sub>O<sub>15</sub>]<sup>4–</sup>, [Co<sub>3</sub>(bipy)<sub>4</sub>(H<sub>2</sub>O)<sub>6</sub>{(HO<sub>2</sub>CC<sub>2</sub>H<sub>4</sub>PO<sub>3</sub>)<sub>2</sub>Mo<sub>5</sub>O<sub>15</sub>}<sub>2</sub>]·(H<sub>2</sub>bipy)<sub>2</sub>·18H<sub>2</sub>O (<b>1</b>),
[Fe<sub>3</sub>(bipy)<sub>4</sub>(H<sub>2</sub>O)<sub>6</sub>{(HO<sub>2</sub>CC<sub>2</sub>H<sub>4</sub>PO<sub>3</sub>)<sub>2</sub>Mo<sub>5</sub>O<sub>15</sub>}<sub>2</sub>]·(H<sub>2</sub>bipy)<sub>2</sub>·18H<sub>2</sub>O (<b>2</b>), and [CuÂ(bipy)Â(H<sub>2</sub>O)<sub>2</sub>{(HO<sub>2</sub>CC<sub>2</sub>H<sub>4</sub>PO<sub>3</sub>)<sub>2</sub>Mo<sub>5</sub>O<sub>15</sub>}]·(H<sub>2</sub>bipy)·4H<sub>2</sub>O (<b>3</b>), where bipy = 4,4′-bipyridine,
have been successfully synthesized at different pH values in aqueous
solutions. In compound <b>1</b>, [(HO<sub>2</sub>CC<sub>2</sub>H<sub>4</sub>PO<sub>3</sub>)<sub>2</sub>Mo<sub>5</sub>O<sub>15</sub>]<sup>4–</sup> acts as a tridentate ligand and coordinates
to the Co<sup>2+</sup> ions of trimeric complex cations [Co<sub>3</sub>(bipy)<sub>4</sub>(H<sub>2</sub>O)<sub>6</sub>]<sup>6+</sup> forming
a layer. In <b>3</b> [(HO<sub>2</sub>CC<sub>2</sub>H<sub>4</sub>PO<sub>3</sub>)<sub>2</sub>Mo<sub>5</sub>O<sub>15</sub>]<sup>4–</sup> acts as a bidentate ligand and coordinates to the Cu<sup>2+</sup> ions of complex chains [CuÂ(bipy)Â(H<sub>2</sub>O)<sub>2</sub>]<sub><i>n</i></sub><sup>2<i>n</i>+</sup>, forming
a different layer from that in <b>1</b>. The three compounds
were characterized by elemental analysis, IR spectra, and TGA. In
addition, their fluorescent properties and magnetic properties have
also been investigated
