초록 |
Single crystal structure of N1,N1,N1,N2,N2,N2-hexamethylethane-1,2-diaminium dicyanamide(HMEDA-(DCA)2) prepared using N1,N1,N2,N2-tetramethylethane-1,2-diamine through the quaternization and subsequent ion exchange was determined readily with charge flipping method. The structure of HMEDA-(DCA)2 was triclinic, P1 with lattice parameters of a=6.427 Å, b=8.725 Å, c=14.069 Å, α=88.658°, β=87.874° and γ=71.712° in which the chemical composition was C24H44N16 with R1/wR2=9.18/15.20 over 1477 reflections for I>3σ(I). The largest difference peak was 0.85 and the deepest hole was -0.53 eÅ3. The goodness-of-fitness index was 2.22. The final maximum (change/s.u.) was 0.0437. |