TY - JOUR
T1 - The effect of reaction conditions on the nature of cadmium 1,3,5-benzenetricarboxylate metal-organic frameworks
AU - Burrows, Andrew D.
AU - Frost, Christopher G.
AU - Kandiah, Mathivathani
AU - Keenan, Luke L.
AU - Mahon, Mary F.
AU - Savarese, Teresa L.
AU - Warren, John E.
N1 - Funding Information:
The EPSRC is acknowledged for financial support and for support of the Chemical Database Service.
PY - 2011
Y1 - 2011
N2 - The product from the reaction between Cd(NO3) 2·4H2O and 1,3,5-benzenetricarboxylic acid (H 3btc) in DMF at 95 °C depends on the reaction time, with [Cd(Hbtc)(H2O)2] 1 and [Cd(Hbtc)(DMF)2] 2 isolated after heating for 10 min, the latter after standing the solution for 1-2 weeks at room temperature. [Cd3(btc)2(H 2O)9]·4H2O 3 was isolated after heating for 1 h, whereas [Cd12(btc)8(DMF)14(OH 2)2]·1.5DMF 4 was isolated after heating for 2 days. Compounds 1 and 3 have been previously reported, whereas 2 and 4 are both new. Compound 2 adopts a two-dimensional sheet structure, with the coordinated DMF ligands projecting from both sides of the sheets, whereas 4 has a complex three-dimensional structure related to the fsc net. When the reaction was repeated in the presence of pyrazine (pyz), the product [Cd(Hbtc)(pyz)(DMF)] ·DMF 5 was isolated as a minor compound. Compound 5 has a two-dimensional structure, with Cd-Hbtc zig-zag chains linked into sheets through the pyrazine ligands.
AB - The product from the reaction between Cd(NO3) 2·4H2O and 1,3,5-benzenetricarboxylic acid (H 3btc) in DMF at 95 °C depends on the reaction time, with [Cd(Hbtc)(H2O)2] 1 and [Cd(Hbtc)(DMF)2] 2 isolated after heating for 10 min, the latter after standing the solution for 1-2 weeks at room temperature. [Cd3(btc)2(H 2O)9]·4H2O 3 was isolated after heating for 1 h, whereas [Cd12(btc)8(DMF)14(OH 2)2]·1.5DMF 4 was isolated after heating for 2 days. Compounds 1 and 3 have been previously reported, whereas 2 and 4 are both new. Compound 2 adopts a two-dimensional sheet structure, with the coordinated DMF ligands projecting from both sides of the sheets, whereas 4 has a complex three-dimensional structure related to the fsc net. When the reaction was repeated in the presence of pyrazine (pyz), the product [Cd(Hbtc)(pyz)(DMF)] ·DMF 5 was isolated as a minor compound. Compound 5 has a two-dimensional structure, with Cd-Hbtc zig-zag chains linked into sheets through the pyrazine ligands.
KW - Benzenetricarboxylate
KW - Cadmium
KW - Coordination polymer
KW - Metal-organic framework
KW - X-ray structural analyses
UR - http://www.scopus.com/inward/record.url?scp=79251600499&partnerID=8YFLogxK
U2 - 10.1016/j.ica.2010.11.025
DO - 10.1016/j.ica.2010.11.025
M3 - Article
AN - SCOPUS:79251600499
SN - 0020-1693
VL - 366
SP - 303
EP - 309
JO - INORGANICA CHIMICA ACTA
JF - INORGANICA CHIMICA ACTA
IS - 1
ER -