A silver(i) coordination polymer with the sodium salt of 3,5-dimethyl-4-sulfonate pyrazole (HLNa) has been prepared and structurally characterized by ab initio X-ray powder diffraction. The presence of the SO3Na substituent in position 4 of the pyrazole ring led to a 3D polymeric species in which organometallic/inorganic layers alternate along b. Zigzag chains of linearly coordinated Ag(i) ions keep together the inorganic layers, which consist of a trapezoidal grid of Na ions interconnected by bridging sulfonates and bridging water molecules which are both disordered about a mirror plane. Interestingly, the disordered moieties slowly reorganize in a time-driven crystallization process as observed on aged, 1 year old samples.

A silver(i) coordination polymer with sodium 3,5-dimethyl-4-sulfonate pyrazolate: A nice example of PXRD structure solution and time-driven crystallization

Brenna, Stefano
Membro del Collaboration Group
;
Ardizzoia, G. Attilio
Membro del Collaboration Group
;
2019

Abstract

A silver(i) coordination polymer with the sodium salt of 3,5-dimethyl-4-sulfonate pyrazole (HLNa) has been prepared and structurally characterized by ab initio X-ray powder diffraction. The presence of the SO3Na substituent in position 4 of the pyrazole ring led to a 3D polymeric species in which organometallic/inorganic layers alternate along b. Zigzag chains of linearly coordinated Ag(i) ions keep together the inorganic layers, which consist of a trapezoidal grid of Na ions interconnected by bridging sulfonates and bridging water molecules which are both disordered about a mirror plane. Interestingly, the disordered moieties slowly reorganize in a time-driven crystallization process as observed on aged, 1 year old samples.
http://pubs.rsc.org/en/journals/journal/ce
Coordination polymers, pyrazoles, silver, power diffraction
Brenna, Stefano; Ardizzoia, G. Attilio; Colombo, Valentina; Sironi, Angelo
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11383/2080350
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