| Abstract
| - A metal−organic framework (MOF) based on Pt, Y, and 2,2‘-bipyridine-5,5‘-dicarboxylate (BPDC), stableup to 400 °C, has been synthesized and characterized. In this MOF, the Pt centers are coordinated to Cl andthe N atoms of the BPDC unit, giving a local environment similar to that found in a series of Pt−organiccomplexes with catalytic activity toward C−H bond cleavage of alkanes. This new material is a heterogeneouscounterpart to the corresponding metal−organic complex. The structure, determined by single-crystal XRDdata, is the repetition of three covalently bonded layers. These layers form a block, which is stacking as an(a)(b)(c) sequence along the crystallographic b-axis. Each layer contains the Pt−organic unit, while Y atomsrepresent the connection between adjacent layers. No covalent connection is present between layer (a) of ablock and layer (c) of an adjacent block. EXAFS (BM29 at the ESRF) analysis supports the XRD data. Asthis MOF crystallizes under hydrothermal conditions, water acts both as solvent and as a direct ligand of Y.Accessibility to the metal centers is demonstrated by reversible water desorption/readsorption, as determinedby TPA/TPD, FTIR, UV−vis, EXAFS, and XANES. Importantly, the results show that the as-synthesizedmaterial will not suffer a permanent loss in porosity upon solvent removal. In addition to water, methanol,ethanol, and acetonitrile can also access the internal void of the dehydrated phase.
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