Issue 47, 2017

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

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

Supplementary files

Article information

Article type
Paper
Submitted
15 Sep 2017
Accepted
07 Nov 2017
First published
21 Nov 2017

Dalton Trans., 2017,46, 16570-16579

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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