【摘要】 分别以2种硝基羧酸配体EBNB(1,2-二(3-硝基苯甲酸)-乙烯)和NPA(3-硝基邻苯二甲酸)与BPY(4,4′-联吡啶)及金属锌反应,配位溶剂热法合成了2种具有硝基基团修饰的二核金属簇为基本构筑单元的金属有机框架化合物[Zn2(EBNB)2(BPY)2·2H2O]n(1)和[Zn2(NPA)2(BPY)2·H2O]n(2)。通过X-射线单晶衍射法测定了2种配合物的结构,其中配合物1属于三斜晶系,P1空间群,a=0.818 62(9)nm,b=1.142 20(14)nm,c=1.428 63(17)nm,α=96.803 0(10)°,β=93.045 0(10)°,γ=102.472(2)°,V=1.290 8(3)nm3,Z=2,Mr=595.81,Dc=1.533 g·cm-3,μ=1.01 mm-1,F(000)=608,T=293(2)K;配合物2属于三斜晶系,P1空间群,a=1.154 06(14)nm,b=1.190 86(16)nm,c=1.459 52(19)nm,α=98.029(1)°,β=98.749(1)°,γ=113.579(2)°,V=1.771 9(4)nm3,Z=2,Mr=879.35,Dc=1.648 g·cm-3,μ=1.43 mm-1,F(000)=892,T=293(2)K。同时也对2种配合物的发光性能进行了测试,测试结果表明2种配合物具有较好的荧光性能。更多还原

【Abstract】 Two nitro group modified metal-organic frameworks(MOFs)[Zn2(EBNB)2(BPY)2·2H2O]n(1) and [Zn2(NPA)2(BPY)2·H2O]n(2) with EBNB and NPA(EBNB=(E)-4,4′-(ethene-1,2-diyl)bis(3-nitrobenzoic acid), NPA=3-nitrophthalic acid) as carboxylic acid ligands were prepared. Compound 1 crystallizes in triclinic system, P1 space group with a=0.818 62(9) nm, b=1.142 20(14) nm, c=1.428 63(17) nm, α=96.803 0(10)°, β=93.045 0(10)°,γ=102.472(2)°, V=1.290 8(3) nm3, Z=2, Mr=595.81, Dc=1.533 g·cm-3, μ=1.01 mm-1, F(000)=608, T=293(2) K,Final R=0.049 9, wR=0.106 7 for 3 214 observed reflections with I>2σ(I). Compound 2 crystallizes in triclinic system, P1 space group with a=1.154 06(14) nm, b=1.190 86(16) nm, c=1.459 52(19) nm, α=98.029(1)°, β=98.749(1)°, γ=113.579(2)°, V=1.771 9(4) nm3, Z=2, Mr=879.35, Dc=1.648 g·cm-3, μ=1.43 mm-1, F(000)=892, T=293(2) K, Final R=0.041, wR=0.084 for 4 035 observed reflections with I>2σ(I). Furthermore, the luminescence properties of compounds were also investigated, and the results show that the compound 1 and 2 exhibit strong emission at 483 and 456 nm respectively. CCDC: 910300, 1; 912100, 2.更多还原