The acetylacetonate complexes [Ni2L1(acac)(MeOH)]·H2O, 1·H2O and [Ni2L3(acac)(MeOH)]·1.5H2O, 2·1.5H2O (H3L1 = (2-(2-hydroxyphenyl)-1,3-bis[4-(2-hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazolidine and H3L3 = (2-(5-bromo-2-hydroxyphenyl)-1,3-bis[4-(5-bromo-2-hydroxyphenyl)-3-azabut-3-enyl]-1,3-imidazolidine) were prepared and fully characterised. Their crystal structures show that they are dinuclear complexes, extended into chains by hydrogen bond interactions. These compounds were used as starting materials for the isolation of the corresponding [Ni2HLx(o-O2CC6H4CO2)(H2O)]·nMeOH and [Ni2HLx(O2CCH2CO2)(H2O)]·nH2O dicarboxylate complexes (x = 1, 3; n = 1–3). The crystal structures of [Ni2HL1(o-O2CC6H4CO2)(H2O)]·MeOH, 3·MeOH, [Ni2HL3(o-O2CC6H4CO2)(H2O)]·3MeOH, 4·3MeOH and [Ni2HL1(O2CCH2CO2)(H2O)]·2.5H2O·0.25MeOH·MeCN, 5·2.5H2O·0.25MeOH·MeCN, were solved. Complexes 3–5 show dinuclear [Ni2HLx(dicarboxylate)(H2O)] units, expanded through hydrogen bonds that involve carboxylate and water ligands, as well as solvate molecules. The variable temperature magnetic susceptibilities of all the complexes show an intramolecular ferromagnetic coupling between the Ni(II) ions, which is attempted to be rationalized by comparison with previous results and in the light of molecular orbital treatment. Magnetisation measurements are in accord with a S = 2 ground state in all cases.
                                    乙酰丙酮络合物[Ni2L1(acac)(MeOH)]-
H2O,1-    和[Ni2L3(acac)(MeOH)]-1.5   ,2-1.5   (H3L1 = (2-(2-羟基苯基)-1,3-双[4-(2-羟基苯基)-3-氮杂丁-3-烯基]-1,3-
咪唑烷)和 H3L3 = (2-(5-
溴-2-羟基苯基)-1,3-双[4-(5-
溴-2-羟基苯基)-3-氮杂丁-3-烯基]-1,3-
咪唑烷))。它们的晶体结构显示,它们是通过氢键相互作用延伸成链的双核复合物。这些化合物被用作起始材料,用于分离相应的 [Ni2HLx(o-O2CC6H4CO2)(   )]-nMeOH 和 [Ni2HLx(O2CCH2CO2)(   )]-n    二
羧酸盐配合物(x = 1, 3; n = 1-3)。解决了 [Ni2HL1(o-O2CC6H4CO2)(   )]-MeOH, 3-MeOH, [Ni2HL3(o-O2CC6H4CO2)(   )]-3MeOH, 4-3MeOH 和 [Ni2HL1(O2CCH2CO2)(   )]-2.5   -0.25MeOH-MeCN, 5-2.5   -0.25MeOH-MeCN 的晶体结构。配合物 3-5 显示出双核 [Ni2HLx(二
羧酸盐)(   )]单元,通过氢键扩展,涉及
羧酸盐和
水配体以及溶质分子。所有配合物的变温磁感应强度都显示出 Ni(II)离子之间存在分子内
铁磁耦合。磁化测量结果与所有情况下的 S = 2 基态一致。