TY - JOUR
T1 - Hydrothermal syntheses and structures of cobalt(II) and copper(II) coordination polymers with 1-tetrazole-phenyl-4-methylphosphonate ligands
AU - Smith Pellizzeri, Tiffany M.
AU - Zhang, Y. Z.
AU - Gooch, Jonathan
AU - Lau, Adam
AU - McLeish, Sharde
AU - Dunbar, Kim R.
AU - Zubieta, Jon
N1 - Funding Information:
The work at Syracuse University was partially funded by a grant from the National Science Foundation (CHE-0907787). Thanks also needs to be given to the NSF-REU Program, CONO2846, who funded Adam Lau. Adam helped in the ligand synthesis. Kim R. Dunbar is grateful for support of the magnetic measurements by the US Department of Energy, Materials Sciences Division, under Grant No. DE-SC0012582.
Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - Hydrothermal reactions of copper(II) and cobalt(II) salts with 1-tetrazole-phenyl-4-methylphosphonic acid yielded the coordination polymers [Cu(H2O)(HO3PCH2C6H4CN4)]·H2O (1·H2O) and [Co(H2O)2(HO3PCH2C6H4CN4H)2]·2H2O (2·2H2O). Compound 1·H2O is two dimensional and is constructed from chains of trans-corner sharing, ‘4+2’ axially distorted {CuO4N2} octahedra. These chains are linked through the organic tethers of the ligands in the doubly deprotonated form{HO3PCH2C6H4CN4}2−to propagate in two-dimensions. In contrast, compound 2·2H2O is one-dimensional and features {CoO4N2} octahedra linked through pairs of ligands in the singly deprotonated form {HO3PCH2C6H4CN4H}−1, i.e. with the tetrazole terminus in the neutral form. The magnetic properties of compound 1·H2O reflect the structure where the Cu(II) ions are bridged by syn-syn phosphate and tetrazolate Cu-N-N-Cu bridges, with the former linkage likely to transfer ferromagnetic coupling whereas the latter leads to antiferromagnetic coupling. The two competing pathways lead to negligible overall coupling.
AB - Hydrothermal reactions of copper(II) and cobalt(II) salts with 1-tetrazole-phenyl-4-methylphosphonic acid yielded the coordination polymers [Cu(H2O)(HO3PCH2C6H4CN4)]·H2O (1·H2O) and [Co(H2O)2(HO3PCH2C6H4CN4H)2]·2H2O (2·2H2O). Compound 1·H2O is two dimensional and is constructed from chains of trans-corner sharing, ‘4+2’ axially distorted {CuO4N2} octahedra. These chains are linked through the organic tethers of the ligands in the doubly deprotonated form{HO3PCH2C6H4CN4}2−to propagate in two-dimensions. In contrast, compound 2·2H2O is one-dimensional and features {CoO4N2} octahedra linked through pairs of ligands in the singly deprotonated form {HO3PCH2C6H4CN4H}−1, i.e. with the tetrazole terminus in the neutral form. The magnetic properties of compound 1·H2O reflect the structure where the Cu(II) ions are bridged by syn-syn phosphate and tetrazolate Cu-N-N-Cu bridges, with the former linkage likely to transfer ferromagnetic coupling whereas the latter leads to antiferromagnetic coupling. The two competing pathways lead to negligible overall coupling.
KW - Metal-organophosphonate
KW - Mixed tetrazole/phosphonic acid ligand
KW - Solid state coordination chemistry
KW - cobalt(II)-tetrazole-phosphonate chain
KW - copper(II)-tetrazolate-phosphonate network
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U2 - 10.1016/j.ica.2016.12.015
DO - 10.1016/j.ica.2016.12.015
M3 - Article
AN - SCOPUS:85008637617
SN - 0020-1693
VL - 458
SP - 109
EP - 115
JO - Inorganica Chimica Acta
JF - Inorganica Chimica Acta
ER -