Kiriukhina Galina V, Yakubovich Olga V, Verchenko Polina A, Volkov Anatoly S, Dimitrova Olga V
Lomonosov Moscow State University, Leninskye Gory 1, Moscow, 119991, Russian Federation.
Acta Crystallogr C Struct Chem. 2022 May 1;78(Pt 5):287-294. doi: 10.1107/S2053229622003692. Epub 2022 Apr 11.
Two new compounds, sodium copper nickel diorthophosphate, NaCuNi(PO) (I), and dimanganese copper diorthophosphate, MnCu(PO) (II), were synthesized hydrothermally, yielding single crystals, and were studied by X-ray diffraction. In the crystal structures, various transition metals of d-elements occupy symmetrically independent crystallographic positions with different coordination geometries. In the crystal structure of NaNiCu(PO), NiO and CuO octahedra share edges to form chains that PO groups link into a framework with cavities filled with Na atoms. Layered cationic fragments formed from dimers of MnO trigonal bipyramids and CuO square planes, sharing vertices, are connected through PO tetrahedra into a 3-periodic MnCu(PO) crystal structure. Structural correlations between NaNiCu(PO) and NaCuPO are discussed, and crystal-chemical details of the currently known exclusively synthetic mixed Mn/Cu and Ni/Cu phosphates are presented.
通过水热法合成了两种新化合物，二正磷酸钠铜镍（NaCuNi(PO) ，I）和二正磷酸锰铜（MnCu(PO) ，II），得到了单晶，并通过X射线衍射对其进行了研究。在晶体结构中，各种d族过渡金属占据具有不同配位几何构型的对称独立晶体学位置。在NaNiCu(PO) 的晶体结构中，NiO八面体和CuO八面体共享棱边形成链，PO基团将这些链连接成一个框架，其空腔中填充有Na原子。由MnO三角双锥和CuO正方形平面的二聚体形成的层状阳离子片段共享顶点，通过PO四面体连接成三维周期的MnCu(PO) 晶体结构。讨论了NaNiCu(PO) 与NaCuPO之间的结构相关性，并给出了目前已知的仅为合成的混合Mn/Cu和Ni/Cu磷酸盐的晶体化学细节。
