The reaction of Ni(OAc)2·4H2O with LH (LH = 11H-indeno[1,2-b]quinoxalin-11-one oxime) in a mixture of solvents comprising MeCN/MeOH (1 : 1) under solvothermal conditions in the presence of NEt3 forms the complex [Ni3(L)5(OAc)(MeOH)]·2.6MeCN·0.7MeOH·0.2H2O (1·2.6MeCN·0.7MeOH·0.2H2O) in moderate yield. Repeating the reaction in MeOH produces the complex [Ni6(L)6(OAc)4(OMe)2]·1.5MeOH·1.3H2O (2·1.5MeOH·1.3H2O) in good yield, while the reaction between Ni(ClO4)2·6H2O and LH in the presence of NEt3 in MeOH under solvothermal conditions yields complex [Ni5(L)6(OMe)2(OH)(H2O)2(MeOH)2](ClO4)·8.8MeOH·1.4H2O (3·8.8MeOH·1.4H2O). Furthermore, the reaction between Ni(ClO4)2·6H2O, LH and 2-amino-isobutyric acid, aibH, in MeCN in the presence of NEt3 forms complex [Ni7(L)7(aib)4(OH)(MeCN)0.5(H2O)0.5](ClO4)2·4MeCN·0.25H2O (4·4MeCN·0.25H2O) under high temperature/pressure, while the same reaction in MeOH yields complex [Ni8(L)8(aib)3(OMe)3](ClO4)2·0.75MeOH·4.2H2O (5·0.75MeOH·4.2H2O). Variable temperature dc magnetic susceptibility studies show that all 1–5 clusters display a small or a diamagnetic ground-state, S.
在 NEt3 存在下,Ni(OAc)2-4 与 LH(LH =
11H-茚并[1,2-b]喹喔啉-11-酮肟)在 MeCN/MeOH (1 : 1) 混合溶剂中发生溶热反应,生成复合物 [Ni3(L)5(OAc)(MeOH)]-2。6MeCN-0.7MeOH-0.2 (1-2.6MeCN-0.7MeOH-0.2 ),产率中等。在 MeOH 中重复该反应可生成复合物 [Ni6(L)6(OAc)4(OMe)2]-1.5MeOH-1.3 (2-1.5MeOH-1.3 ),收率良好;而在溶热条件下,Ni(
ClO4)2-6 和 LH 在 NEt3 存在下于 MeOH 中发生反应,得到复合物 [Ni5(L)6(OMe)2(OH)(
H2O)2(MeOH)2]( )-8.8MeOH-1.4 (3-8.8MeOH-1.4 )。此外,在 NEt3 的存在下,Ni( )2-6 、LH 和 2-
氨基
异丁酸 aibH 在 MeCN 中反应形成复合物 [Ni7(L)7(aib)4(OH)(MeCN)0.5( )0.5]( )2-4MeCN-0.25 (4-4MeCN-0.25 ),而在 MeOH 中进行相同的反应则可得到复合物 [Ni8(L)8(aib)3(OMe)3]( )2-0.75MeOH-4.2 (5-0.75MeOH-4.2 )。变温直流磁感应强度研究表明,所有 1-5 个团簇都显示出较小或二磁性的基态 S。