来源：ACS PublicationsThe reaction between isophthalic acid (H2L1) and Gd(NO3)3·6H2O leads to the formation of a two-dimensional (2D) extended framework with the molecular formula [Gd2(L1)3(H2O)2]n (1). Complex 1 crystallizes in monoclinic space group P21/n. The compound undergoes a reversible crystalline-to-amorphous phase transition. Magnetic susceptibility measurements on a polycrystalline sample of 1 reveal a weak ferromagnetic interaction between the Gd(III) centers below 20 K. Analysis of the magnetic data using the Fisher chain model indicates an exchange interaction strength (J) of +...
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2025
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来源：ACS PublicationsA straightforward synthesis of Cp*2Sc(AlMe4) (Cp* = C5Me5) applying Cp*2ScCl(thf) and LiAlMe4/AlMe3 is described. Donor-assisted trimethyltriel exchange gives access to Cp*2Sc(EMe4) (E = Ga, In), which represent the first scandium tetramethylgallate and tetramethylindate complexes. Thermal treatment of Cp*2Sc(EMe4) (E = Ga, In) in benzene leads to the isolation of methylidene clusters Cp*6Sc4E8(CH2)12Me6 (E = Ga, In). This methyl group deprotonation differs from the benzene activation previously observed for Cp*2Y(EMe4) (E = Al, Ga). Treatment of Cp*2Sc(EMe4) (E = Al, Ga) wi...
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2025
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Zero-Field Single Molecular Magnet Behavior of Selenotungstate-Encapsulated Dy(III) Tetramers 来源：ACS PublicationsTwo tartaric acid-bridged organic–inorganic hybrid Dy(III)-substituted selenotungstates [HN(CH3)2]2K8Na14[(α-SeW9O33)4Dy4(H2O)4W6(tart)4O12]·33H2O (1) and K16[(α-SeW9O33)4Dy4(H2O)12W6(tart)2O12]·42H2O (2) are synthesized by controlling the reaction parameters such as counter cations and pH. Tetrameric polyoxoanions 1 and 2 consist of four trivacant Keggin [α-SeW9O33]8– fragments, which encapsulate the heterometallic clusters [Dy4(H2O)4W6(tart)4O12]12+ and [Dy4(H2O)12W...
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2025
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来源：ACS PublicationsThe AM2Pn2 (A= Ca, Sr, Ba, Yb, Mg; M = Zn, Cd, Mg; and Pn = N, P, As, Sb, Bi) family of Zintl phases has been known as thermoelectric materials and has recently gained much attention for highly promising materials for solar absorbers in single-junction and tandem solar cells. In this paper, we will, from first principles, explore the entire family of AM2Pn2 compounds in terms of their ground-state structure, thermodynamic stability, and electronic structure. We also perform photoluminescence spectroscopy on bulk powder and thin film samples to verify our results, including t...
Release time:
2025
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