Alkoxide bridged Copper(II) Hinokitiolato and Tropolonato Complexes: Polymorphism, Reconstructive Phase Transition, and Magnetic Properties

Abstract

Abstract. Polymorphism and an unexpected reconstructive phase transition in [Cu(trop)(μ-OMe)] 2 (trop = tropolonate) were studied by single crystal and powder X-ray diffraction; the phase transition is associated with a huge hysteresis of ca. 200°C. In the readily reproducible crystal form, the methoxide-bridged dinuclear subunits aggregate to infinite chains by longer bonds in the Jahn-Teller distorted coordination sphere. Analogous alkoxide-bridged derivatives with the substi-