DIEGO JOSÉ LUIS RODRÍGUEZ HERNÁNDEZ (original) (raw)
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Papers by DIEGO JOSÉ LUIS RODRÍGUEZ HERNÁNDEZ
Inorganic Chemistry, 2015
Coordination polymer chains have been formed by the direct reaction between HSC 6 H 2 Cl 2 SH and... more Coordination polymer chains have been formed by the direct reaction between HSC 6 H 2 Cl 2 SH and FeCl 3 •6H 2 O in the presence of an aqueous solution of the corresponding alkali-metal hydroxide (M = Li, Na, and K) or carbonate (M = Rb and Cs). The structures consist of dimeric [Fe 2 (SC 6 H 2 Cl 2 S) 4 ] 2− entities bridged by [M 2 (THF) 4 ] [M = K (1), Rb (2), and Cs (3); THF = tetrahydrofuran] or {[Na 2 (μ-H 2 O) 2 (THF) 2 ] (5 and 5′) units. The smaller size of the lithium atom yields an anion/ cation ion-pair molecule, [Li(THF) 4 ] 2 [Fe 2 (SC 6 H 2 Cl 2 S) 4 ] (4), in which the dianionic moieties are held together by Cl•••Cl interactions. Electrical characterization of these compounds shows a general semiconductor behavior in which the conductivity and activation energies are mainly determined by the M−Cl and M−S bond distances. Compounds 1 and 5′ are interesting examples of bistability showing reversible transitions centered at ca. 350 and 290 K with very large hysteresis of ca. 60 and 35 K, respectively. All of these compounds exhibit intradimer strong antiferromagnetic Fe•••Fe interactions.
Inorganic Chemistry, 2015
Coordination polymer chains have been formed by the direct reaction between HSC 6 H 2 Cl 2 SH and... more Coordination polymer chains have been formed by the direct reaction between HSC 6 H 2 Cl 2 SH and FeCl 3 •6H 2 O in the presence of an aqueous solution of the corresponding alkali-metal hydroxide (M = Li, Na, and K) or carbonate (M = Rb and Cs). The structures consist of dimeric [Fe 2 (SC 6 H 2 Cl 2 S) 4 ] 2− entities bridged by [M 2 (THF) 4 ] [M = K (1), Rb (2), and Cs (3); THF = tetrahydrofuran] or {[Na 2 (μ-H 2 O) 2 (THF) 2 ] (5 and 5′) units. The smaller size of the lithium atom yields an anion/ cation ion-pair molecule, [Li(THF) 4 ] 2 [Fe 2 (SC 6 H 2 Cl 2 S) 4 ] (4), in which the dianionic moieties are held together by Cl•••Cl interactions. Electrical characterization of these compounds shows a general semiconductor behavior in which the conductivity and activation energies are mainly determined by the M−Cl and M−S bond distances. Compounds 1 and 5′ are interesting examples of bistability showing reversible transitions centered at ca. 350 and 290 K with very large hysteresis of ca. 60 and 35 K, respectively. All of these compounds exhibit intradimer strong antiferromagnetic Fe•••Fe interactions.