Tellurotungstate-Based Organotin–Rare-Earth Heterometallic Hybrids with Four Organic Components

A family of unprecedented tellurotungstate-based organotin–rare-earth (RE) heterometallic hybrids [H2N(CH3)2]6H12Na2 {[Sn(CH3)W2O4(IN)][(B-α-TeW8O31)RE(H2O) (Ac)]2}2·25H2O [RE = CeIII (1), PrIII (2), NdIII (3), SmIII (4), EuIII (5), GdIII (6), TbIII (7); HIN = isonicotinic acid, HAc = acetic acid] were synthesized and characterized by elemental analyses, IR spectra, UV spectra, thermogravimetric analyses, powder X-ray diffraction, and single-crystal X-ray diffraction. The polyoxoanionic skeletons {[Sn(CH3)W2O4(IN)][(B-α-TeW8O31)RE(H2O) (Ac)]2}220– of 1–7 are constructed from two symmetrical units {[Sn(CH3)W2O4(IN)][(B-α-TeW8O31)RE(H2O) (Ac)]2}10– linked by two acetate connectors, which not only represent the first inorganic–organic hybrid RE-substituted tellurotungstates involving three different organic ligands, but also stand for the first samples of organotin–RE heterometallic polyoxometalate derivatives. The solid-state luminescent emission properties of 2–5 mainly display the characteristic emission ...