3,5,9,11-四乙酰基-14-氧杂-1,3,5,7,9,11-六氮杂五环[5.5.3.0^(2,6).0^(4,10).0^(8,12)]十五烷的硝解反应研究

对3,5,9,11-四乙酰基-14-氧杂-1,3,5,7,9,11-六氮杂五环[5.5.3.02,6.04,10.08,12]十2五烷(Ⅰ)的硝解反应进行了详细研究。以硝酸-乙酸酐为硝化剂可选择性硝化Ⅰ得到:4-硝基氧甲基-2,6,8,12-四乙酰基-10-硝基-2,4,6,8,10,12-六氮杂异伍兹烷(Ⅱ)。以硝硫混酸为硝化剂直接在80℃下与Ⅰ反应得到CL-20,而先低温反应再提高反应温度的两段法则得到4-硝基氧甲基-2,6,8,10,12-五硝基-2,4,6,8,10,12-六氮杂异伍兹烷(Ⅲ)。硝硫混酸硝化Ⅱ可得到Ⅲ。Ⅱ和Ⅲ是新型的六氮杂异伍兹烷衍生物,用元素分析、FTIR、MS和NMR等手段对其进行了结构表征。

CRYSTAL STRUCTURE OF Ce(ClO_4)_3 COMPLEX WITH 3,3-R,R'-16-C-5(R=CH_3;R'=CH_3O(CH_2)_2OCH^-_2)

The title compound C18H37O20NCeCl3, Mr = 834. 25, orthorhom-bic, P212121, a = 11.836(4), b = 13.899(6), c= 19. 401(6) A ; V=3192(2)A3; Z = 4; Dc=1. 74gcm-3, F (000) = 1684,μ= 17. 8cm-1 (MoKa). The final R = 0. 080, Rw = 0. 081. The Ce(Ⅲ) ion is coordinated to one O atom of one C1O4- ion, a CH3CN molecule, a water molecule and seven O atoms from a crown ether molecule. The other two C1O4- ions are not coordinated to the metal. The bond lengths of Ce-N(CH3CN), Ce -O(ClO4-), Ce -O(H2O) and Ce-O(crown) are 2. 61,2. 82,2. 53, and 2. 56A, respectively.

SYNTHESIS AND CRYSTAL STRUCTURE OF Pr(NO_3)_3(Me_2-16-C-5)

The complex Pr (NO3)3 (Me2-16-C-5) (Me2-16-C-5 = 3, 3-dimethyl-1,5,8,11,14-pentaoxacyclohexadecane) crystallizes in the hexagonal space group P65with a = b = 13. 145(2), c=25. 611(5) A ; Z = 6; V = 3832(1)A3; Dc = 1. 53gcm-3; F (000) = 1776;μ= 19. 7cm-1 (MoKa). The final refinement converged with R = 0. 049 and Rw = 0. 051 for 2005 observed reflections. The Pr(Ⅲ) ion is 11-coordinated to three bidentate nitrate groups and five oxygen atoms of a crown ether. The average Pr -O(crown) and Pr -O(NO3-) bond lengths are 2. 68 and 2. 57A , respectively.