Reversible displacive phase transition in [ Ni ( en ) 3 ] 2 + ( NO 3 - - ) 2 : a potential temperature calibrant for area - detector diffractometers


The coordination complex [Ni(en)3] (NO3 )2 (en = 1,2-diaminoethane) undergoes a sharp reversible displacive phase transition at 109 K, changing space group from P6322 above the transition temperature to P6522 below. The phase change is accompanied by a tripling of the c axis on cooling, resulting in an easy detection of the transition in images from area… (More)


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