Zhang Jiayao, Bhattacharya Saurav, Nisar Talha, Wagner Veit, Kortz Ulrich
School of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany.
Department of Chemistry, BITS Pilani K. K. Birla Goa Campus, Zuarinagar 403726, Goa, India.
Inorg Chem. 2023 Dec 4;62(48):19603-19611. doi: 10.1021/acs.inorgchem.3c02967. Epub 2023 Nov 16.
The first two discrete, fully inorganic platinum(II/IV)-arsenito clusters, [-Pt(AsO)] () and [Pt(HAsO)(HAsO)] (), as well as the platinum(II)-arsenito heteropolytungstate [PtAsWO] (), have been synthesized in aqueous media using simple one-pot reaction conditions. In , a Pt ion is coordinated to two cyclic, tridentate AsO units via oxo-donation (Pt-O ∼ 2.02 Å). In , each Pt ion is coordinated to four AsO ligands via two oxygens and two As atoms in a square-planar fashion (Pt-As 2.31 Å, Pt-O 2.07 Å), resulting in an open cage-like structure, which forms a strong tetrameric assembly in the solid state mediated by two K counterions. In , each Pt ion is coordinated by the As atoms of three AsO ligands (Pt-As 2.38 Å) and an oxo group (Pt-O 2.07 Å) in addition to bridging two tungsten ions, and this polyanion was characterized in solution by Pt NMR.
前两个离散的、完全无机的铂（II/IV）-亚砷酸根簇合物，[-Pt(AsO)] （）和[Pt(HAsO)(HAsO)] （），以及铂（II）-亚砷酸根杂多钨酸盐[PtAsWO] （），已在水介质中使用简单的一锅法反应条件合成。在 中，一个铂离子通过氧配位与两个环状三齿AsO单元配位（Pt-O ∼ 2.02 Å）。在 中，每个铂离子以平面正方形方式通过两个氧原子和两个砷原子与四个AsO配体配位（Pt-As 2.31 Å，Pt-O 2.07 Å），形成一个开放的笼状结构，该结构在固态中由两个钾抗衡离子介导形成强四聚体组装。在 中，每个铂离子除了桥连两个钨离子外，还由三个AsO配体的砷原子（Pt-As 2.38 Å）和一个氧原子（Pt-O 2.07 Å）配位，并且该聚阴离子在溶液中通过铂核磁共振进行了表征。
