II Bispidone Chloride CuLCl

The copper(II) complex [Cu(L)Cl]Cl x 2H20 is obtained in over 70% yield. To a suspension of L (0.5 g, 1.14 mmol) in MeOH (5mL) is added under stirring 

The piperidone pL and bispidone L are air-stable, colorless crystalline compounds. As for bispidones in general, the IR spectrum of L has characteristic Bohlmann bands (2795 and 2848 cm ), which disappear upon complexation. The blue crystalline copper(II) complex [Cu(L)(Cl)]+ is stable in air. In the UV-vis spectrum (aqueous solution), it shows a d-d transition at 2max = 656nm (15244cm x) with 656 = 90cm 1 M 1. The spin Hamiltonian parameters (obtained by simulation of a measured frozen solution EPR spectmm [116K, DMF/ CH3OH = 2 l]) are gz= 2.224, gx = gy = 2.Q5-, 175 x 10 4cm, Ay 22 

Kerscher and W. Schiek, Prog. Inorg. Chem. 55, 613 (2007). 

Submitted by YUUJI KA.JITA, YOSHIMITSU TACHI, YUTAKA HITOMI TOMOYUKI NAKAGAWA, YOSHIHISA KISHIMA, and MASAHITO KODERA  

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