characteristic. It was also found that polymorphic transformations are also uncharacteristic of complexes of other metals with the acyclic nitroxides under study ([Zn(hfac)2LEt]2, [Zn(hfac)2LPr]2, [Mn(hfac)2LEt]2). Thus, it was shown that the presence of both the Cu(II) ion and coordinated O–N group of acyclic nitroxide in the solid phase are favorable conditions for the emergence of stereochemical nonrigidity
链状聚合物 [Cu(hfac) 2 L Et ] ∞和双环分子 [Cu(hfac) 2 L Et ] 2 -I (L R =
吡唑基取代的叔丁基氮氧化物;1-R-5- (叔丁基-氧基
氨基)
吡唑,R = Et, Pr)被发现会自发转变为双环分子[Cu(hfac) 2 L Et ] 2 -II。[Cu(hfac) 2 L Et ] 2 -I 到 [Cu(hfac) 2 L Et ]的单晶到单晶 (SC-SC) 转变2 -II通过晶体的X射线衍射分析记录为时间的函数。在 255–277 K,[Cu(hfac) 2 L Et ] 2 -I → [Cu(hfac) 2 L Et ] 2 -II SC–SC 转变进行 12–18 h。[Cu(hfac) 2 L Et ] ∞ → [Cu(hfac) 2 L Et ] 2-II SC-SC相变伴随着晶体形状的变化,晶体的自发机械位移以及颜色从橙色到深绿色