Synthesis and Some First-Row Transition-Metal Complexes of the 1,2,4-Triazole-Based Bis(terdentate) Ligands TsPMAT and PMAT
作者:Marco H. Klingele、Boujemaa Moubaraki、Keith S. Murray、Sally Brooker
DOI:10.1002/chem.200500387
日期:2005.11.18
octahedral, as evidenced by the X-ray crystal structure analyses of [Co(II) (2)(TsPMAT)(2)](BF(4))(4)6 MeCN (246 MeCN) and [Fe(II) 2(PMAT)2](BF4)4DMF (27DMF). Studies of the magnetic properties of [Co(II) 2(TsPMAT)2](BF4)4.4 H2O (244 H2O), [Mn(II) 2(PMAT)2](ClO4)4 (26), and [Co(II) 2(PMAT)2](BF4)4 (28) have revealed weak antiferromagnetic coupling (J=-3.3, -0.16, and -2.4 cm(-1), respectively) between the two
已经研究了采用基于亲核取代而不是席夫碱缩合的策略来制备1,2,4-三唑基配体,并导致了两种新配体的合成,即4-氨基-3, 5-双[N-(2-吡啶基甲基)-N-(4-甲苯磺酰基)氨基]甲基} -4H-1,2,4-三唑(TsPMAT,14)和4-氨基-3,5-bis [(2-吡啶基甲基)氨基]甲基} -4H-1,2,4-三唑(PMAT,15)。这些是掺入1,2,4-三唑单元的双(齿)配体的第一个实例。TsPMAT(14)与Co(BF4)2.6 H2O形成双核2:2络合物,即使当金属与配体的摩尔比为2:1时也是如此。同样,PMAT(15)与Mn(ClO4)2.6H2O或M(BF4)2.6 H2O(M = Fe,Co,Ni,Zn)配体与金属的摩尔比为1:1的反应提供了通式[M(II)(2)(PMAT)2] X4的一系列配合物。TsPMAT(14)和PMAT(15)的这些络合物中的金属中心被两个配体分子包裹,并被1