论文部分内容阅读
Two novel coordination compounds,1[Zn_4(L_1)_4(NO_3)_2(H_2O)_2](NO_3)_2·2H_2O and 2[Mn_2(L_2)_2(DMF)(H_2O)_3](ClO_4)_2·DMF(HL_1 = N’-[(1E)-pyridine-2-ylmethylidene]pyrazine-2-carbohydrazide,H_2L_2 = 2-hydroxy-3-methoxybenzaldehyde(pyrazin-2-ylcarbonyl)hydrazone),based on the N-N bridged ligands were prepared and structurally characterized.Compound 1represents the[2*2]molecular squares,in which both N atoms belonging to the N-N bridged ligands are connected to the Zn centers.The emission of compound 1 exhibits a blue shift,which can be assigned to strong electrostatic interaction between Zn~Ⅱ ions and the L_1~(-1).Compound 2represents a rare phenol-O bridged Mn_2~Ⅱ complex.The magnetic investigation indicates weak antiferromagnetic interactions between the Mn~Ⅱ centers.
Two novel coordination compounds, 1 [Zn_4 (L_1) _4 (NO_3) _2 (H_2O) _2] (NO_3) _2 · 2H_2O and 2 [Mn_2 (L_2) _2 (DMF) (H_2O) _3] (ClO_4) _2 · DMF 2-hydroxy-3-methoxybenzaldehyde (pyrazin-2-ylcarbonyl) hydrazone), based on the NN bridged ligands were prepared and structurally characterized.Compound 1represents the [2 * 2] molecular squares, where both N atoms belonging to the NN bridged ligands are connected to the Zn centers. The emission of compound 1 exhibits a blue shift, which can be assigned to strong electrostatic interaction Between Zn ~ Ⅱ ions and the L_1 ~ (-1) .Compound 2represents a rare phenol-O bridged Mn_2 ~ Ⅱ complex.The magnetic investigation shows weak antiferromagnetic interactionsbetween the Mn ~ Ⅱ centers.