Iron(III) Metallacryptand and Metallacryptate Assemblies Derived from Aroylbis(<i>N</i>,<i>N</i>-diethylthioureas)
作者:Chien Thang Pham、Hung Huy Nguyen、Adelheid Hagenbach、Ulrich Abram
DOI:10.1021/acs.inorgchem.7b01909
日期:2017.9.18
products of the compositions M⊂[Fe2(L2)3]}(PF6) (M = Na+, K+, Rb+) (8(PF6)) could be isolated from analogous reactions with alkaline salts instead of Tl(NO3). 2}-Metallacryptates with larger central voids were synthesized with the ether-spaced aroylbis(N,N-diethylthiourea) H2L3. The compounds M⊂[Fe2(L3)3]}(PF6) (M = K+, Rb+, Tl+ or Cs+) (9(PF6)) were prepared by a similar protocol like those with
间苯二甲酰双(N,N-二乙基硫脲),H 2 L 1与FeCl 3 ·6H 2 O的反应得到双核三配合物[Fe 2(L 1)3 ](5),具有隐窝状结构。然而,与配体2,6-二吡啶啉基双(N,N-二乙基硫脲)H 2 L 2的反应类似,导致形成阴离子,单核的Fe(III)络合物[Fe(L 2)2 ] -(6),可以将其隔离为“ Tl+盐”,然后加入Tl(NO 3)。然而,更严格地观察所得产物的固态结构,将化合物6表征为一维配位聚合物,其中四配位的Tl +离子将[Fe(L 2)2 ] - }单元连接到无限大的位置。链。当在一锅法反应中同时将Fe 3+离子和Tl +离子添加到H 2 L 2中时,会得到不同的产物:组成为M⊂[Fe 2(L 2)3 ]}的阳离子三核络合物+。它已被分离为PF 6 –盐,代表在中央空隙中带有9配位Tl +离子的2}-金属层合物。可以从与碱的类似反应中分离出组成为M⊂[Fe