作者:Amin Ismael、José António Paixão、Rui Fausto、Maria Lurdes S. Cristiano
DOI:10.1016/j.molstruc.2012.04.018
日期:2012.9
0737 A, α = 96.517°, β = 107.543°, γ = 99.989°; Z = 2), 1-methyltetrazole-saccharinate units assume the most stable configuration for the isolated molecule, (1H)-1-methytetrazole iminosaccharin tautomeric form (1MTIS), with the N C spacer linking the two heterocycles. On the other hand, neat crystalline 2-methyl derivative units (space group P 1 ¯ , a = 7.8010 A, b = 8.6724 A, c = 9.4984 A, α = 114.083°
摘要 利用 X 射线晶体学、红外和拉曼光谱研究了结晶相中氮连接的 1-和 2-甲基四唑糖精的分子结构,并辅以在 DFT(B3LYP)/6-31 上进行的量子化学计算。 ++G(d,p) 孤立分子的理论水平。在纯结晶固体中(空间群 P 1¯ , a = 6.9763 A, b = 8.3097 A, c = 10.0737 A, α = 96.517°, β = 107.543°, γ = 99.989°; Z = 2-甲基四唑),1-甲基四唑-糖精单位假定分离分子的最稳定构型,(1H)-1-甲基四唑亚氨基糖精互变异构形式 (1MTIS),NC 间隔基连接两个杂环。另一方面,纯结晶 2-甲基衍生单元(空间群 P 1¯ , a = 7.8010 A, b = 8.6724 A, c = 9.4984 A, α = 114.083°, β = 107.823°, γ = 93.080°;Z = 2)