摘要
在水-吡啶混合体系中,以5-羟基-1,3-苯二甲酸(简作HO-H2BDC )、1,2-二(4-吡啶)乙烷(简作bpe)为配体与Co(NO3)2·6H2O反应,培养出[Co2(HO-BDC)2(bpe)2( H2O)2]n·n(py)·nH2O(py =pyridine)的紫色单晶,该晶体属三斜晶系,P1空间群,晶胞参数a=1·0245(3) nm,b=1·1467(3) nm,c=1·2430(4)nm,α=68·915(5)°,β=67·163(4)°,γ=71·373(4)°,V=1·2279(6) nm3,Z=1,Mr=979·70,Dc=1·325Mg/m3,F(000)=506,μ=0·740 mm-1,R1=0·0515,wR2=0·1058.该配位聚合物中在ac平面上具有规则平行四边形纳米尺寸的孔,其孔径大小约为1·025 nm×1·354 nm,而且通过氢键相互作用连成具有双层结构的2D网络结构. TGA曲线表明,配位聚合物的失重发生在110 ～150℃之间,总失重约为80·1%,最终产物为Co2O3.
A novel coordination ploymer [Co2（HO-BDC）2（bpe）2（H20）2]n·n（py）·nH20[where HO-H2BDC is 5-hydroxyisophthalic acid and bpe is 1,2-bis（4-pyridyl） ethane, py is pyridine] with nanoscale channels was synthesized and characterized via elemental analysis, IR spectra and single-crystal X-ray diffrac-tion. The crystal belongs to triclinic crystal system, space group P]-, with a=1.0245（3）nm, b=1.1467（3）nm, c=1.2430（4）nm, α=68.915（5）°,β=67.163（4）°,γ=71.373（4）, V= 1.2279（6）nm^3, Z= 1, Mr=979.70, Dc=1.325 Mg·m^-3, F（000）=506, μ=0.740mm^-1, the final R1=0.0515 and ωR2=0.1058 for 3625 observed reflections with I〉2σ（I）. The coordination polymer has a 2D rectangular grid framework parallel to the ac plane with a dimension of 1.025nm×0.1354 nm via strong hydrogen-bonding in-teractions. TGA curves of the coordination polymer show three main weight losses in the range of 110～150℃, 200～300℃ and 320～450℃ corresponding to the removal of non-coordinatated water molecules, non-coordinatated py molecules and the water and bpe molecules attached to metal, respectively, and the final res-idue is identified to be CO2O3.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第6期1009-1013,共5页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号: 20571039)
国家自然科学基金重大项目(批准号: 90101028)
教育部博士学科点专项科研基金(批准号: 20050284031)
江苏省自然科学基金(批准号: BK2006124)
安徽省自然科学基金(批准号: KJ2007B013)资助
