Related Experiment Video
Updated: Nov 9, 2025
07:20
Author Spotlight: Accelerating Discovery in Microporous Material Chemistry
Published on: October 6, 2023
4.0K
Polyoxotungstate Archetype {P4 W27 } and its 3d Derivatives.
Tuba Iftikhar1,2, Natalya V Izarova1,2, Jan van Leusen1
1Institute of Inorganic Chemistry, RWTH Aachen University, 52074, Aachen, Germany.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|April 7, 2021
Summary
Researchers explored a phenylphosphonate-stabilized polyoxotungstate as a precursor for novel metal-functionalized polyanions. Reactions with manganese (MnII) and copper (CuII) yielded new {P4W27} polyoxotungstate structures.
Area of Science:
- Inorganic Chemistry
- Materials Science
- Coordination Chemistry
Background:
- Polyoxotungstates are versatile inorganic clusters with tunable properties.
- Phenylphosphonate ligands offer unique stabilization and reactivity pathways for polyoxotungstates.
- Exploring new metal-functionalized polyoxotungstates is crucial for developing advanced materials.
Purpose of the Study:
- To investigate the potential of a phenylphosphonate-stabilized polyoxotungstate as a precursor.
- To synthesize and characterize novel 3d metal-functionalized polyanions.
- To explore the formation of new polyoxotungstate archetypes.
Main Methods:
- Single-crystal X-ray diffraction for structural determination.
- Elemental analysis and thermogravimetric (TG) analysis for composition and stability.
- Infrared (IR) spectroscopy, UV/Vis spectroscopy, and cyclic voltammetry for characterization.
- SQUID magnetometry for magnetic properties.
Main Results:
- The phenylphosphonate-stabilized polyoxotungstate successfully acted as a precursor.
- New {P4W27} polyoxotungstate archetypes were synthesized using MnII and CuII.
- The structures of the novel polyanions [Na⊂{MnII(H2O)}{WO(H2O)}P4W26O98]13- (1) and [K⊂{CuII(H2O)}{W(OH)(H2O)}P4W27O99]14- (2) were determined.
- Characterization confirmed the formation and properties of the new compounds in solid state and solution.
Conclusions:
- Phenylphosphonate-stabilized polyoxotungstates are effective precursors for novel metal-functionalized polyanions.
- The study expands the known library of polyoxotungstate structures with new {P4W27} archetypes.
- The findings open avenues for designing functional inorganic materials with tailored properties.
Related Concept Videos
02:42Valence Bond Theory
10.0K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
10.0K
02:46Crystal Field Theory - Tetrahedral and Square Planar Complexes
45.8K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
45.8K
03:35Hybridization of Atomic Orbitals II
41.0K
sp3d and sp3d 2 Hybridization
41.0K
02:57Coordination Number and Geometry
17.3K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
17.3K
02:27Predicting Molecular Geometry
39.5K
VSEPR Theory for Determination of Electron Pair Geometries
39.5K
02:42Ionic Crystal Structures
16.0K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
16.0K