Crystal and molecular structure of polymeric dilithium tetra(propionato)cadmium(II): A layered inorganic ionic-organic molecular structure

The structure of the title compound is made up of a central sheet containing only metal and oxygen atoms with organic moieties outside and between sheets. The Cd(II) is on a crystallographic center of symmetry and is bound to six propionate oxygen atoms to yield a coordination geometry of an approximate octahedron. Each lithium has four oxygen nearest neighbors to form a distorted tetrahedral geometry. The lithium atoms are in pairs via oxygen bridges to form unsymmetrical Li₂O₂ parallelograms with a crystallographic center of symmetry in the middle. Crystal data: Li₂Cd(C₃H₅O₂)₄,M _r =419, triclinic,P¯1,a=7.526(1),b=11.296(2),c=4.925(1) Å,=94.85(2),=98.04(2), =78.97(2)°,V=406(1) ų,Z=1,D _m =1.70(2),D _x =1.71 g cm^–3, T 298K,R=0.028 for 2303 reflections.