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 - 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 -