| Abstrakt: |
The preparation and spectroscopic data of the new ternary amide LiAl(NHCH3)4are reported. The structure of the title compound has been determined from X-ray powder diffraction data (tetragonal, 141, a = 14.000(4) Å, c = 9.275(2) Å, 210 reflections, R = 3.75%, weighted R = 5.10%). Both the lithium and the aluminium atoms are coordinated tetrahedrally by nitrogen atoms. Edge-sharing pairs of lithium centered and aluminium centered tetrahedra are connected to each other in helical chains forming a 3D-framework via the remaining vertices. A comparison of the projection of the crystal structure of LiAl(NHCH3)4along the c-axis to those of cristobalite and of hollandite, (Ba,K)2(Mn,Fe)8O16, reveals similarities with respect to both the connectivity and the topology of ring structures. |
