Switching on photoreactivity in Ti₄-oxo clusters by increasing the size of 1,<i>n</i>-alkane diolate bridging ligands.

ABSTRACT: A series of new isostructural Ti-oxo clusters containing bridging bidentate 1,n-alkane diolate ligands with the formula [Ti₄O₄(O₂PR₂)₄{O(CH₂) _n O}₂] (R = Ph, n = 2-5; R = Cy, n = 2-4) were prepared by an alkoxide exchange strategy. The cluster with the 1,5-pentane diolate ligand undergoes productive photoredox chemistry in solution under UV light, resulting in the oxidation of one end of the alkane diolate, and subsequent cyclisation into the lactone tetrahydro-2H-pyran-2-ol, along with formation of a two-electron reduced Ti-oxo cluster stabilised by pyridine. Clusters with smaller bridging alkane diolates show no productive photoredox reactivity, except for R = Cy,

SUBMITTER: Chikara A 

PROVIDER: S-EPMC12658559 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature