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Hydrazine-solvothermal methods to synthesize polymeric thioarsenates from one-dimensional chains to a three-dimensional framework.

ABSTRACT: A series of polymeric Mn(ii)-thioarsenates [Mn(en)3] n [(N2H4)2Mn6(μ6-S)(μ-N2H4)2(μ3-AsS3)4] n (1), [N2H5] n [{Mn(μ-N2H4)2(μ-AsS4)}·0.5en] n (2), [Mn(μ-trien){Mn(μ-N2H4)(μ-AsS3)}2] n (3), [{Mn(N2H4)}2(μ-N2H4)2{Mn(μ-N2H4)2(μ-AsS3)2}] n (4), [Mn3(μ-N2H4)6(μ3-AsS4)(μ2-AsS4)] n (5), and [Mn(NH3)6] n [{Mn(NH3)(μ-AsS4)}2] n (6) were synthesized using a hydrazine-solvothermal method. The thioarsenate units AsS3 and AsS4 coordinate to Mn(ii) ions with variable coordination modes, forming a Mn-As-S ternary cluster (1), chains (2, 4-6), and layers (3), respectively. The hydrazine molecules act as inter-cluster, intra-chain and intra-layer bridging ligands to join the Mn(ii) ions, resulting in hydrazine hybrid 1-D, 2-D, and 3-D Mn(ii)-thioarsenate moieties in 1-5. Compounds 1-6 exhibit tunable semiconducting band gaps varying in the range of 2.19-2.47 eV. Compound 1 displays stronger antiferromagnetic coupling interactions than that of compound 2.

SUBMITTER: Han J 

PROVIDER: S-EPMC9087208 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature

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Hydrazine-solvothermal methods to synthesize polymeric thioarsenates from one-dimensional chains to a three-dimensional framework.

Han Jingyu J   Li Shufen S   Tang Chunying C   Zheng Wei W   Jiang Wenqing W   Jia Dingxian D  

RSC advances 20180901 59

A series of polymeric Mn(ii)-thioarsenates [Mn(en)<sub>3</sub>] <sub><i>n</i></sub> [(N<sub>2</sub>H<sub>4</sub>)<sub>2</sub>Mn<sub>6</sub>(μ<sub>6</sub>-S)(μ-N<sub>2</sub>H<sub>4</sub>)<sub>2</sub>(μ<sub>3</sub>-AsS<sub>3</sub>)<sub>4</sub>] <sub><i>n</i></sub> (1), [N<sub>2</sub>H<sub>5</sub>] <sub><i>n</i></sub> [{Mn(μ-N<sub>2</sub>H<sub>4</sub>)<sub>2</sub>(μ-AsS<sub>4</sub>)}·0.5en] <sub><i>n</i></sub> (2), [Mn(μ-trien){Mn(μ-N<sub>2</sub>H<sub>4</sub>)(μ-AsS<sub>3</sub>)}<sub>2</sub>] <sub>  ...[more]

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