High Nuclearity (Octa-, Dodeca-, and Pentadecanuclear) Metal (M = Co<sup>II</sup>, Ni<sup>II</sup>) Phosphonate Cages: Synthesis, Structure, and Magnetic Behavior
作者:Javeed Ahmad Sheikh、Amit Adhikary、Himanshu Sekhar Jena、Soumava Biswas、Sanjit Konar
DOI:10.1021/ic402673v
日期:2014.2.3
octanuclear nickel phosphonate cage [Ni8(μ3-OH)4 (OMe)2(O3PR1)2 (O2CtBu)6(HO2CtBu)8], and complex 5 represents a pentadecanuclear cobalt phosphonate cage, [Co15(chp)8(chpH) (O3PR3)8(O2CtBu)6], where chpH = 6-chloro-2-hydroxypyridine. Structural investigation reveals some interesting geometrical features in the molecular cores, which may provide new models in single molecular magnetic materials. Magnetic property
五个新的过渡金属(M = Co,Ni)膦酸酯基笼子的合成,结构表征和磁性能研究报告。三个取代的苯基和苄基膦酸酯配体[RPO 3 H 2;[R 1 = p -叔丁基苄基,R 2 = p -叔丁基苯基,R 3 = 3-氯苄基]的合成和用来寻求高核性笼中。配合物1 - 3是准同构,并设有具有[M分子通式一个dodecanuclear金属-氧芯12(μ 3 -OH)4 (O 3 PR)4(O 2 C t Bu)6(HO 2 C t Bu)6(HCO 3)6 ] M = Co,Ni,R = R 1表示1(Co 12),R 2表示2,3(Co 12,Ni 12)}。十二个金属中心以类似于Keggin离子的方式排列在截短的四面体的顶点处。复杂4是octanuclear镍膦酸酯笼[镍8(μ 3 -OH)4 (OMe)2(O 3 PR 1)2 (O 2 C t Bu)6(HO 2 C t Bu)8 ],而配合物5代表五癸核膦酸钴笼,[Co