双金属硫代吡啶甲酸镅（III）配位络合物的合成与表征
Synthesis and characterization of a bimetallic americium(III) pyrithionate coordination complex.
作者信息
Huffman Zachary K, Sperling Joseph M, Windorff Cory J, Long Brian N, Cordova Lucas, Ramanantoanina Harry, Celis-Barros Cristian, Albrecht-Schönzart Thomas E
机构信息
Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, Tallahassee, Florida, 32306, USA.
Department of Chemistry and Biochemistry, New Mexico State University, MSC 3C, PO Box 3001, Las Cruces, New Mexico, 88003, USA.
出版信息
Chem Commun (Camb). 2022 Oct 20;58(84):11791-11794. doi: 10.1039/d2cc03352f.
The aqueous reaction of sodium pyrithione, (Na)mpo, with AmCl·HO yields a dimerized complex, [Am(mpo)(μ-O-mpo)(HO)]·3HO. This compound is compared with isostructural lanthanide pyrithionates, where dimerization across the 4f-block is observed to be dependent upon the size of the cation. Unlike in most reported Am(III) UV-visible absorption spectra, [Am(mpo)(μ-O-mpo)(HO)]·3HO shows significant splitting in the fingerprint excitations. This is attributed to a unique ligand-field environment, where the Am-mpo bonds possess different bonding compared to the Nd(III) analog because of increasing covalent interactions.
吡啶硫酮钠（Na）mpo与AmCl·HO的水相反应生成一种二聚配合物，[Am(mpo)(μ-O-mpo)(HO)]·3HO。将该化合物与同结构的镧系吡啶硫酮盐进行比较，发现4f族元素中二聚作用取决于阳离子的大小。与大多数已报道的Am(III)紫外可见吸收光谱不同，[Am(mpo)(μ-O-mpo)(HO)]·3HO在指纹激发处显示出明显的分裂。这归因于独特的配体场环境，由于共价相互作用的增加，与Nd(III)类似物相比，Am-mpo键具有不同的键合方式。
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