Asymmetric tetranuclear nickel chains with unidirectionally ordered 2-(α-(5-phenyl)pyridylamino)-1,8-naphthyridine ligands
作者:Lien-Hung Tsou、Marc Sigrist、Ming-Hsi Chiang、Er-Chien Horng、Chun-hsien Chen、Shou-Ling Huang、Gene-Hsiang Lee、Shie-Ming Peng
DOI:10.1039/c6dt03223k
日期:——
8-naphthyridine with 2-amino-5-phenylpyridine in the presence of potassium tert-butoxide. Linear tetranickel metal complexes, [Ni4(phpyany)4Cl2](CF3SO3) 1, [Ni4(phpyany)4Cl2](BF4)22, [Ni4(phpyany)4(NCS)2](ClO4) 3 and [Ni4(phpyany)4(NCS)2](CF3SO3)24 were prepared and crystallographically characterised. Complexes 1–4 demonstrate that, for the first time, four asymmetric ligands align unidirectionally
通过钯(0)催化2-氯-1,8-萘啶与2-的反应合成了新的配体2-(α-(5-苯基)吡啶基氨基)-1,8-萘啶(Hphpyany)。在叔丁醇钾存在下的氨基-5-苯基吡啶。线性四镍金属配合物[Ni 4(phpyany)4 Cl 2 ](CF 3 SO 3)1,[Ni 4(phpyany)4 Cl 2 ](BF 4)2 2,[Ni 4(phpyany)4(NCS)2 ](ClO 4)3和[Ni 4制备(phpyany)4(NCS)2 ](CF 3 SO 3)2 4并进行晶体学表征。配合物1-4首次证明,四个不对称配体单向排列,因此构成(4,0)形式的四镍串,特别是四个phpyany的苯基-指向Ni 4链的一侧和萘啶基。1和3的Ni-Ni距离非常短(约2.33Å),表明金属与金属之间存在部分键合,这可以看作是两个含有一个混合价Ni 2的配合物3个以上单元。磁化率的测量结果表明,Ni 4 7+配合物1和3在末端Ni