Double-Propeller-like Heterometallic 3 d -4 f Clusters Ln 18 Co 7 .

Autor: Lun HJ; Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China., Du MH; Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China., Wang DH; Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China., Kong XJ; Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China., Long LS; Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China., Zheng LS; Collaborative Innovation Center of Chemistry for Energy Materials, State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
Jazyk: angličtina
Zdroj: Inorganic chemistry [Inorg Chem] 2020 Jun 15; Vol. 59 (12), pp. 7900-7904. Date of Electronic Publication: 2020 Jun 04.
DOI: 10.1021/acs.inorgchem.0c00613
Abstrakt: Two high-nuclearity lanthanide-transition metal clusters with the general formula [Ln 18 Co II Co III 6 (OH) 14 (CO 3 ) 9 (CH 3 CH 2 COO) 6 (dea) 12 (H 2 O) 30 ]·(NO 3 ) 8 ·Cl 4 ·(CH 3 CH 2 OH) 6 ·(H 2 O) 12 ( Ln 18 Co 7 , Ln = Gd ( 1 ) and Dy ( 2 )) have been obtained by reacting CoCl 2 ·6H 2 O, Ln(NO 3 ) 3 ·6H 2 O, and a mixture of ligands consisting of propionate and diethanolamine (H 2 dea). Crystal structural analysis exhibits two three-blade propellers composed of the Co III 3 Ln 9 units connected by one Co II ion and three CO 3 2- ions, which assemble into a double-propeller-like structure ( Ln 18 Co II Co III 6 ). Magnetocaloric effect (MCE) studies indicate that Gd 18 Co 7 exhibits a large entropy change (-Δ S m ) of 36.9 J kg -1 K -1 .
Databáze: MEDLINE
Externí odkaz: