The synthesis and characterization of two members of a family of porous magnetic materials is described. The structures of Co4(SO4)(OH)6(C2N2H8)0.5*3H2O and Co4(SO4)(OH)6(C6N2H12)0.5*H2O and their thermal stability can be tailored via the choice of organic pillar. The interactions between the pillaring agent and the compositionally complex inorganic layer are discussed. The influences of two pillaring agents i.e., the flexible ethylenediamine and the relatively rigid 1,4-diazabicyclo[2,2,2]octane, on thermal stability, rigidity upon guest loss, and magnetic behavior of the pillared solids are compared. The magnetism of the pillared layered cobalt hydroxides is complex due to the influences of multiple metal sites, inter- and intralayer exchange, spin-orbit coupling, and geometrical frustration. The wide variety of potential pillars, oxyanions, and possible metal substitutions at the octahedral and tetrahedral sites offers the possibility of tailoring the magnetic and porous properties of these materials.

and (III) [Eu III 2 (Habtc) 2 (H 2 O) 6 ]•2.75H 2 O (H 4 abtc = 3,3′,5,5′-azobenzenetetracarboxylic acid), were designed and synthesized for use as catalysts. The framework structures, phase formation, and purity were characterized. The catalytic performances of [Eu IIIwere evaluated based on CO 2 cycloaddition with epichlorohydrin under ambient CO 2 pressure and solvent-free conditions. Discussion has been made with respect to the multiple Lewis and Brønsted acidic and Lewis basic sites coresiding in the frameworks, which were revealed by single-crystal X-ray diffraction and measurements of acidity and basicity. Depending on the reaction conditions, excellent turnover numbers and turnover frequencies (2778 and 694 h −1 for Ib and 2870 and 718 h −1 for IIb) with ≥99% conversion and ≥87% selectivity could be achieved. The robustness of Ib and IIb over 10 cycles of catalysis and the makeup process was disclosed. The potential of Ib and IIb as promising catalysts for other epoxides was also examined.

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Based on the mixed phthalate (phth) and adipate (ad), [Nd(ad)(phth)(HO)] (I) and [Ln(ad)(phth)(HO)] (Ln = Eu (II), Gd (III), Tb (IV), Dy (V), Er (VI), Tm (VII), 1Eu:10Tb (VIII), 3Eu:10Tb (IX), and 5Eu:10Tb (X)) were synthesized and characterized. Complexes VIII-X show excellent ratiometric temperature sensing behavior in physiological and higher temperature ranges (303-423 K) rendered by the Tb-to-Eu energy transfer process. The efficiency of the process as illustrated through the lifetime measurements depends on both the Eu:Tb mole ratio and the temperature. The performance of X in terms of relative sensitivity ( S), temperature resolution, and measurement repeatability were determined, revealing the maximum S ( S) of 1.21%·K at 303 K with reliable temperature resolution and excellent repeatability.

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