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Two (3,10)‐Connected 2D Networks Based on Pentanuclear Metal Clusters as Building Blocks
Author(s) -
Xiao Dongrong,
Yuan Ruo,
Chai Yaqin,
Wang Enbo
Publication year - 2008
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200800028
Subject(s) - isostructural , chemistry , crystallography , ligand (biochemistry) , antiferromagnetism , luminescence , manganese , cluster (spacecraft) , metal , hydrogen bond , single crystal , topology (electrical circuits) , magnetic susceptibility , infrared spectroscopy , crystal structure , stereochemistry , molecule , organic chemistry , biochemistry , physics , receptor , mathematics , optoelectronics , combinatorics , computer science , programming language , condensed matter physics
Self‐assembly of a long, V‐shaped 4,4′‐sulfonyldibenzoato (sdba) ligand and metal salts in the presence of a heterocyclic aromatic ligand affords two (3,10)‐connected 2D networks: [Cd 5 (μ 3 ‐OH) 2 (sdba) 4 (2,2′‐bpy) 2 (H 2 O) 2 ] · 2H 2 O ( 1 ) and [Mn 5 (μ 3 ‐OH) 2 (sdba) 4 (2,2′‐bpy) 2 (H 2 O) 2 ] · H 2 O ( 2 ) (2,2′‐bpy = 2,2′‐bipyridine). Their structures were determined by single‐crystal X‐ray diffraction analysis, and they were further characterized by elemental analysis, IR spectroscopy, and TG analysis. Compounds 1 and 2 are isostructural and represent the highest connected topology presently known for 2D nets. More interestingly, when the strong hydrogen bonds between layers are taken into account, the resulting netbecomes a (3,12)‐connected 3D network with complex(3 2 .4) 2 (3 8 .4 22 .5 24 .6 10 .7 2 ) topology, which possesses the highest observed connectivity (twelve connectivity) known to date. The magnetic properties of compound 2 have been studied by measuring its magnetic susceptibility in the temperature range 2–300 K. The results indicate the existence of antiferromagnetic coupling within the pentanuclear manganese cluster. Furthermore, the luminescent properties of 1 are discussed.(© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)