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Creators/Authors contains: "Cowan, Matthew_G"

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  1. ; ; ; ; ; (, ChemPlusChem)
    Abstract Non‐porous small molecule adsorbents such as {[3,5‐(CF3)2Pz]Cu}3(where Pz=pyrazolate) are an emerging class of materials that display attractive features for ethene−ethane separation. This work examines the chemistry of fluorinated copper(I) pyrazolates {[3,5‐(CF3)2Pz]Cu}3and {[4‐Br‐3,5‐(CF3)2Pz]Cu}3with much larger 1‐butene in both solution and solid state, and reports the isolation of rare 1‐butene complexes of copper(I), {[3,5‐(CF3)2Pz]Cu(H2C=CHC2H5)}2and {[4‐Br‐3,5‐(CF3)2Pz]Cu(H2C=CHC2H5)}2and their structural, spectroscopic, and computational data. The copper−butene adduct formation in solution involves olefin‐induced structural transformation of trinuclear copper(I) pyrazolates to dinuclear mixed‐ligand systems. Remarkably, larger 1‐butene is able to penetrate the dense solid material and to coordinate with copper(I) ions at high molar occupancy. A comparison to analogous ethene and propene complexes of copper(I) is also provided. 
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