distances. The Cd atom is on a crystallographic center of symmetry. The coordination polyhedron of the Cd atom is distorted octahedral with four pyridine nitrogen donors in the equatorial plane and with axial oxygen atoms from the nitrate groups. The CdO distance is 2.599(4) Å, the CdN distances are 2.310(4) and 2.316(3) Å, and the NCdN bite angle is 79.0(1)°. The solid state magic angle spinning/cross
已确定和纯化标题化合物的结构。该结构由被普通范德华距离隔开的孤立分子组成。Cd原子位于晶体学的对称中心。Cd原子的配位多面体在赤道平面上具有四个
吡啶氮供体,并且具有来自
硝酸盐基团的轴向氧原子被扭曲成八面体形。CdO距离为2.599(4)Å,CdN距离为2.310(4)和2.316(3)Å,NCdN咬合角度为79.0(1)°。固态幻角旋转/交叉极化113 Cd NMR各向同性
化学位移为+51.4 ppm,
化学位移张量的成分为:S 11 = -92 ppm,S 33 = +208 ppm和S 22= +39 ppm,其方向是:在CdN 4平面中,将NCdN咬合角度等分,分别垂直于CdN 4平面和第三个垂直于其他两个平面。这允许对
化学位移张量的贡献来自
吡啶氮,为50 ppm,而
硝酸盐氧气为-50 ppm。根据张量分量,原子氮可与脂肪族氮供体区分开。晶体数据:C 20 H 18 O 6