Cation control of pore and channel size in cage-based metal-organic porous materials

被引:48
作者
Harrison, RG [1 ]
Fox, OD
Meng, MO
Dalley, NK
Barbour, LJ
机构
[1] Brigham Young Univ, Dept Chem & Biochem, Provo, UT 84601 USA
[2] Univ Missouri, Dept Chem, Columbia, MO 65211 USA
关键词
D O I
10.1021/ic011135o
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Porous materials resembling zeolites that are composed of organic and inorganic building units were synthesized and characterized. Control of pore and channel size was achieved by using different-sized cations. The metal-assembled, anionic cage molecule, Co(4)1(2)(8-), With a hydrophobic cavity and four carboxylate rich arms, was used as a structural unit for the formation of materials with pores and channels. When assembled into a solid material with dications (Mg2+, Ca2+, Sr2+, and Ba2+), Co(4)1(2)(8-) arranges into sheets of cages linked together by cations, The series of materials based on Co(4)1(2)(8-) and containing alkaline earth cations was characterized using X-ray crystallography. The magnesium material packs with cages close together, has small channels, and has cation-carboxylate linkages in three dimensions. The calcium material has cages packed with voids between them and has 5 x 10 Angstrom channels and 10 x 21 A pores. The strontium and barium materials also pack with voids between the cages and similarly to each other. They have 11 x 13 Angstrom and 11 x 11 Angstrom channels and 10 x 27 Angstrom and 9 x 27 Angstrom pores, respectively, Each of these materials has many (20-50) solvent water molecules associated with each cage. The associated water can be removed from and adsorbed by the materials. The heat of water binding has been measured to be -52 kJ/mol (Mg(4)Co(4)1(2)); -47 kJ/mol (Ca(4)Co(4)1(2)); -48 kJ/mol (Sr(4)Co(4)1(2)); -49 kJ/mol (Ba(4)Co(4)1(2)).
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页码:838 / 843
页数:6
相关论文
共 46 条
[1]  
Abrahams BF, 1998, ANGEW CHEM INT EDIT, V37, P2656, DOI 10.1002/(SICI)1521-3773(19981016)37:19<2656::AID-ANIE2656>3.0.CO
[2]  
2-M
[3]  
Batten SR, 1998, ANGEW CHEM INT EDIT, V37, P1460, DOI 10.1002/(SICI)1521-3773(19980619)37:11<1460::AID-ANIE1460>3.0.CO
[4]  
2-Z
[5]   Expansion of the porous solid Na2Zn3[Fe(CN)6]2•9H2O:: Enhanced ion-exchange capacity in Na2Zn3[Re6Se8(CN)6]2•24H2O [J].
Bennett, MV ;
Shores, MP ;
Beauvais, LG ;
Long, JR .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (28) :6664-6668
[6]   Inorganic crystal engineering using self-assembly of tailored building-blocks [J].
Blake, AJ ;
Champness, NR ;
Hubberstey, P ;
Li, WS ;
Withersby, MA ;
Schröder, M .
COORDINATION CHEMISTRY REVIEWS, 1999, 183 :117-138
[7]  
Breck D.W, 1974, ZEOLITE MOL SIEVES
[8]  
Carlucci L, 2000, ANGEW CHEM INT EDIT, V39, P1506, DOI 10.1002/(SICI)1521-3773(20000417)39:8<1506::AID-ANIE1506>3.0.CO
[9]  
2-U
[10]   Cu2(ATC)•6H2O:: Design of open metal sites in porous metal-organic crystals (ATC:1,3,5,7-adamantane tetracarboxylate) [J].
Chen, BL ;
Eddaoudi, M ;
Reineke, TM ;
Kampf, JW ;
O'Keeffe, M ;
Yaghi, OM .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (46) :11559-11560