Bis(triethanolamin)kupfer(II)‐acetat Cu{N · (CH2CH2OH)3}2](CH3COO)2 wurde aus den Komponenten dargestellt und durch Röntgenstrukturanalyse charakterisiert. Der Komplex kristallisiert in der monoklinen Raumgruppe P21/c mit a = 9.101 Å, b = 13.136 Å, c = 9.819 Å, β = 111.63°. Beschrieben werden Details der Synthese, Daten der Röntgenstrukturanalyse und die thermische Zersetzung der Verbindung.

A new trirutile MTa2O6 was synthesized by thermal decomposition of a freeze dried Cu- Ta-oxalate precursor. Its formation takes place preferentially starting from Cu-rich precursor compositions. Above 1000°C decomposition leads to the already known perovskite like structure with a composition Cu1.05Ta1.98O6 . The degree of the orthorhombic distortion of the perovskite unit cell depends on the conditions during the cooling process after perovskite formation.

The title compound, [Ni{N(CH(2)CH(2)OH)(3)}(2)](CH(3)COO)(2), was prepared and the structure determined. It is isostructural with the copper(II) analogue.

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