Single Crystal-to-Single Crystal Irreversible Transformation from a Discrete Vanadium(V)−Alcoholate to an Aldehydic-Vanadium(IV) Oligomer

Abstract

An unprecedented single crystal-to-single crystal transformation occurs when a binuclear oxovanadium(V) compound [V(V)(2)O(2)(L)(2)] 1 involving 2,6-bis(hydroxymethyl)-p-cresol (H(3)L) as a bridging ligand is exposed simultaneously to white light and aerial oxygen to generate an oligomeric compound [V(IV)(2)O(2)(L*)(2)] 2 (H(2)L* is 3-hydroxymethyl-5-methylsalicylaldehyde). Each vanadium(V) center in 1 is reduced to vanadium(IV) in 2 at the expense of a two-electron alcohol-to-aldehyde oxidation in the coordinated ligand. The additional electron being released is possibly consumed by molecular oxygen to generate hydrogen peroxide.

Turn‐On Fluorescence and Unprecedented Encapsulation of Large Aromatic Molecules within a Manganese(II)–Triazole Metal–Organic Confined Space

“…Usually, through the SC–SC transformation, new complexes, which cannot be obtained under conventional conditions, can be gained in a high yield 19. Materials that show reversible structure transformation and a characteristic response toward specific external stimuli, such as light,20 temperature,21 and guest molecules,22 are vitally important for applications in sensing, molecular capture, switches, and so on 23. However, studies on the change in the metal coordination geometry caused by the removal and addition of ligands from the network itself through the SC–SC transformation remain less common 24…”

Cadmium(II)–Triazole Framework as a Luminescent Probe for Ca2+ and Cyano Complexes

“…[24] Materials that show reversible structure transformations and a characteristic response toward specific external stimuli, such as light, [25] temperature, [26] and guest molecules, [27] are vitally important for applications in sensing, molecular capture, switches, and so on. [28] However, studies on the changes in metal coordination geometry caused by the removal and addition of ligands from the network itself through the SC-SC transformation remain less common.…”

Anion exchange coupled with the reduction and dimerisation of a copper(ii) nitrate complex of tripyridyl dithioether via a single-crystal-to-single-crystal transformation

“…3 On the other hand, the SCSC transformations, involving the chemical reduction of a metal centre, provide a potentially important modification approach for generating new materials. 4 …”