Exocyclic Coordination of Thiamacrocycles Leading to <i>cis</i>- and <i>trans</i>-Palladium(II) Complexes and a Tripalladium(II) Complex Incorporating Acetimidic Anhydride
作者:Seulgi Kim、Hyunsoo Ryu、Jack K. Clegg、Leonard F. Lindoy、Shim Sung Lee
DOI:10.1021/acs.inorgchem.0c02258
日期:2020.11.2
illustrate the possibility for the controlled formation of cis/trans square-planar complexes through binding-site design. When palladium(II) acetate was substituted for K2PdCl4 in the above reaction, L1 gave no product, while L2 resulted in the formation of a unique tripalladium(II) complex, [Pd3(L2)(CH3C(═N)OC(═N)CH3)(CH3COO)4] (3), in which three PdII atoms are linked by acetimidic anhydride, CH3C(═N)OC(═N)CH3
优先形成顺式或反式钯(II)络合物,该络合物通过嵌在二硫代大环化合物中的环外结合位点控制(L 1 = -S(CH 2)2 S–; L 2 = -S(CH 2)2 O(CH 2)2 S-)被报告。从具有K的反应2的PdCl 4,较短的硫对硫分离在大号1优先导致的形成顺式- [钯(大号1)氯2 ](1),而大号2,结合有较大的硫对硫分离,反式方式的坐标,以形成一个环状二聚体,反式- [钯2(大号2) 2氯4 ]( 2)。观察到的结果说明通过结合位点设计可控制地形成顺式/反式方形平面复合物的可能性。当在上述反应中用乙酸钯(II)代替K 2 PdCl 4时, L 1不产生产物,而L 2导致形成独特的三钯(II)络合物[Pd 3( L 2)(CH)3 C(═N)OC(═N)CH 3)(CH 3 COO)4 ](3),其中三个Pd II原子通过乙二酸酐连接,CH 3 C(═N)OC(═N)CH 3,衍生自所用的乙腈溶剂。在1为H