Recent advances in polyoxometalate-based metal-alkynyl clusters

Abstract

Coinage metal-alkynyl clusters have developed rapidly over the past decades. An attractive area of this field is the integration of polyoxometalates (POMs) to direct the formation of metal-alkynyl clusters. POMs...

Clarifying the Electronic Structure of Anion-Templated Silver Nanoclusters by Optical Absorption Spectroscopy and Theoretical Calculation

“…24 These unique features have caused a recent increase in the number of reports on anion-templated Ag NCs. 25 X-ray crystallographic studies have resolved the geometric structures of anion-templated Ag NCs, 26−28 which exhibit several structural features: (1) various ions, such as hydride (H − ), 29 deuteride hydride (D − ), halide ions, chalcogenide ions, oxoanions, and polyoxometalates (POM), can be used as templates, 30 and (2) NCs with a low number of Ag atoms tend to be formed when using small anions, such as H − and D − , as templates, 31,32 whereas large NCs are formed when using large anions, such as POM, as templates. 33,34 In contrast, their electronic structures have not been clarified in detail, although there have been several reports on their optical absorption and photoluminescence.…”

Hexnuclear, octanuclear, dodecanuclear, and hexadecnuclear polyoxomolybdenum(v)-based porous materials for selective adsorption of gases

“…Product 3 was isolated as yellow square flakes in 54.3% yield (0.589 g) based on molybdenum. Found (calcd for C 16 The synthesis of 4 was similar to that of 3 except the pH value of the mixed solution was adjusted to 8.0 with 5.0 mol L −1 NaOH. After heating at 80 °C for 24 h, the mixture is left to stand overnight after cooling down.…”

“…14,15 Most polyoxometalate-based porous complexes are limited to polyoxometalate anions with known structures such as Keggin, Anderson or Dawson type as "molecular adapters", which are obtained by non-covalent or covalent action. 16 Therefore, the preparation of new polyoxometalate-based porous complexes with interesting structures and properties is still a challenging problem in the syntheses of polyacid chemistry.…”

Synthesis and Full Characterization of One Organometallic Polyoxometalate-Based Copper(I)-Alkene Complex

“…For example, remarkable progress has been achieved in the synthesis of metal-ethylene complexes. − Fueled by Wilke’s seminal discovery that transition metal can be stabilized by cyclic polyene ligands, the homoleptic metal-cyclene complex exploded and followed rapidly. − An attractive branch of this field is polyoxometalate (POM)-based organometallic chemistry. As a large class of discrete metal–oxygen clusters with versatile nature of the structure and tunable properties, the POMs have been widely studied and developed rapidly in many areas, − while as organometallic synthons, the POMs can direct the formation of metal-alkynyl clusters. − Since Mak’s first report of POM-templated silver–alkynyl clusters, fruitful results have been documented and recently reviewed. − However, metal-alkene-incorporated organometallic POMs remain virtually unexplored.…”