ExperimentalCrystals of the title complex, Cu(HCO2) 2-(pyridine) 2. H20, are orthorhombic with a = 9.731 (1), b = 14.351 (1), c = 10.302 (1) A, space group Pnma, Z = 4. The structure was refined to R = 0.043 for 1420 independent reflections. Both independent formate groups and the Cu atom lie on a mirror plane, and the complex has a polymeric chain structure. One formate is monodentate and the other bridges in an anti-syn fashion. Thus each Cu atom is coordinated to three formate groups and to two pyridine molecules. Coordination about Cu is essentially square-pyramidal, the base consisting of two trans pyridine N atoms
Aus dem Ester (I) wird über die Stufen (IIa)‐(III) das 8,24‐Dienon Tirucallon (IV) dargestellt, dessen LiAlH4‐Reduktion das (III) isomere 8,24‐Dien‐3β‐ol (Tirucallol, Ausb. 77%) gibt.
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