Single Isomer Heterometallic {Cr<sup>III</sup><sub>6</sub>M<sup>II</sup><sub>2</sub>} Rings Templated by Tetramethylammonium
作者:Rajeh Alotaibi、Edmund Little、Jonathan M. Fowler、Adam Brookfield、Ralph W. Adams、Amritroop Achari、Grigore A. Timco、George F. S. Whitehead、Nicholas F. Chilton、Rahul R. Nair、David Collison、Richard E. P. Winpenny
DOI:10.1021/acs.inorgchem.1c02342
日期:2021.10.18
[Me4N]2[CrIII6MII2F8(O2CtBu)16] is reported using tetramethylammonium hydroxide pentahydrate as the source of a template, where M = Zn, Mn, Ni, and Co. The metal cores are octagons with metal–metal edges bridged by one fluoride and two carboxylate ligands. The divalent metal ions are found ordered at positions 1 and 5 in the octagon. The tetramethylammonium cations are above and below the metal plane of the
一族异金属环 [Me 4 N] 2 [Cr III 6 M II 2 F 8 (O 2 C t Bu) 16据报道,使用四甲基氢氧化铵五水合物作为模板源,其中 M = Zn、Mn、Ni 和 Co。金属核是八边形,金属-金属边缘由一个氟化物和两个羧酸盐配体桥接。发现二价金属离子在八边形的位置 1 和 5 处有序。四甲基铵阳离子在晶体结构中位于环金属平面的上方和下方。磁性研究表明存在的顺磁金属离子之间存在反铁磁耦合,在每种情况下都会导致顺磁基态。1 H NMR 光谱证实Cr III 6 Co II 2} 环存在于溶液中,电子顺磁共振波谱证实了其他三个环的磁结构。