Abstract
A pair of luminescent heterometallic lanthanide-transition-metal coordination polymers, namely, [PrLAg(3)(SCN)(6)·H(2)O](n) (1) and [PrLAg(3)(SCN)(6)](n) (2) [L = 2,6-di(pyrazol-1-yl)pyridine], have been obtained with different cooling rates under solvothermal conditions. The two structures are pseudo- supramolecular isomers constructed via the same [PrL(NCS)(6)](3-) subunit and different Ag-S clusters, presenting diverse two-dimensional and three dimensional frameworks, respectively. In both complexes, the tridentate chelate L, acting as an organic chromophore, along with the d(10)-block Ag-S clusters, are simultaneously immobilized, and effectively sensitize the Pr(III)-based luminescence.
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