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. 2021 Jan 4;60(1):80-86.
doi: 10.1021/acs.inorgchem.0c02257. Epub 2020 Nov 12.

{P2V3W15}-Polyoxometalates Functionalized with Phthalocyaninato Y and Yb Moieties

Ricarda Pütt  1 , Piotr Kozłowski  2 , Irina Werner  3 , Jan Griebel  3 , Sebastian Schmitz  3 , Jonas Warneke  3   4 , Kirill Yu Monakhov  3
Affiliations

{P2V3W15}-Polyoxometalates Functionalized with Phthalocyaninato Y and Yb Moieties

Ricarda Pütt et al. Inorg Chem. .

Abstract

A tris(alkoxo)pyridine-augmented Wells-Dawson polyoxometalate (nBu4N)6[WD-Py] (WD = P2V3W15O59(OCH2)3C, Py = C5H4N) was functionalized with phthalocyaninato metal moieties (MPc where M = Y or Yb and Pc = C32H16N8) to afford (nBu4N)4[HWD-Py(MPc)] compounds. High-resolution mass spectrometry was used to detect and identify the hybrid assembly. The magnetism studies reveal substantial differences between M = Yb (monomeric, single-ion paramagnetism) and M = Y (containing dimers, radical character). The results of electronic paramagnetic resonance spectroscopy, SQUID magnetometry, and magnetochemical calculations indicate the presence of intramolecular charge transfer from the MPc moiety to the polyoxometalate and of intermolecular charge transfer from the MPc moiety of one molecule to the polyoxometalate unit of another molecule. These compounds with identified VIV ions represent unique examples of transition-metal/lanthanide complex-POM hybrid compounds with nonphotoinduced charge transfer between electron donor and acceptor centers.

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