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Issue 47, 2017
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Zinc(II), cobalt(II) and manganese(II) networks with phosphoserine ligand: synthesis, crystal structures and magnetic and proton conductivity properties

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Abstract

A series of zinc(II), cobalt(II) and manganese(II) coordination networks with phosphoserine ligand (H3PSer) are synthesized and characterized. Whereas in compounds 1 and 2 with the general formula [M(HPser)]n [M = Zn (1) and Co (2)], the metal(II) ion presents a tetrahedral geometry, in [Co(HPSer)(H2O)2]n (3) and [Mn(HPSer)(H2O)]n (4), the metal(II) ions are in a distorted octahedral geometry. The 3D frameworks are formed by inorganic layers built up from MO4 or MO6 polyhedra and phosphate groups. These layers are linked by the carboxylate groups of the phosphoserine ligand. The presence of extended hydrogen bonding stabilizes the 3D network and favours the proton transfer leading to moderate proton conductors. The highest proton conductivity, 2.70 × 10−5 S cm−1 (at 80 °C and 95% RH), is obtained for compound 3. Temperature-dependent magnetic susceptibility measurements for 2–4 reveal predominant antiferromagnetic interactions between the paramagnetic metal(II) ions.

Graphical abstract: Zinc(ii), cobalt(ii) and manganese(ii) networks with phosphoserine ligand: synthesis, crystal structures and magnetic and proton conductivity properties

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Publication details

The article was received on 15 Sep 2017, accepted on 07 Nov 2017 and first published on 21 Nov 2017


Article type: Paper
DOI: 10.1039/C7DT03474A
Citation: Dalton Trans., 2017,46, 16570-16579
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    Zinc(II), cobalt(II) and manganese(II) networks with phosphoserine ligand: synthesis, crystal structures and magnetic and proton conductivity properties

    J. Vallejo, I. R. Salcedo, R. M. P. Colodrero, A. Cabeza, A. Świtlicka, J. Cano and M. Viciano-Chumillas, Dalton Trans., 2017, 46, 16570
    DOI: 10.1039/C7DT03474A

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