首页> 外文期刊>Journal of chemical crystallography >Methanolothermal Syntheses, Crystal Structures and Optical Properties of Binuclear Transition Metal Complexes Involving the Bidentate S-Donor Ligand mu-Sn2S6
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Methanolothermal Syntheses, Crystal Structures and Optical Properties of Binuclear Transition Metal Complexes Involving the Bidentate S-Donor Ligand mu-Sn2S6

机译:涉及双齿S-配体配体mu-Sn2S6的双核过渡金属配合物的甲醇热合成,晶体结构和光学性质

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New binuclear transition metal complexes concerning the bidentate S-donor ligand mu-Sn2S6, [{Mn(tren)}(2)(mu-Sn2S6)] (1), [{Zn(tren)}(2)(mu-Sn2S6)] (2), and [{Mn(tepa)}(2)(mu-Sn2S6)] (3) [tren = tris(2-aminoethyl) amine, tepa = tetraethylenepentamine] were prepared under methanolothermal conditions. The Mn2+ and Zn2+ ions are coordinated by a tren ligand, forming [TM(tren)](2+) (TM = Mn, Zn) units. As a bidentate bridging ligand, the hexathiobistannate [Sn2S6](4-) anion joins two [TM(tren)](2+) units via trans terminal S atoms to form neutral complexes 1 and 2. Both Mn2+ and Zn2+ ions are in a trigonal bipyramidal environment. In 3, the Mn2+ ion binds a pentadentate tepa ligand to give a [Mn(tepa)](2+) unit. Two [Mn(tepa)](2+) units are connected by a mu-Sn2S6 bridging ligand, forming neutral complex [{Mn(tepa)}(2)(mu-Sn2S6)], in which the Mn2+ ion is in an octahedral environment. Intermolecular N-H center dot center dot center dot S H-bonding interactions connect 1-3 into layered structures, while 3 forms a three-dimensional network via the N-H center dot center dot center dot S H-bonds. 1-3 exhibit possible semiconducting properties with the band gaps at 2.3, 2.7 and 2.4 eV, respectively.
机译:关于双齿S-供体配体mu-Sn2S6,[{Mn(tren)}(2)(mu-Sn2S6)](1),[{Zn(tren)}(2)(mu-Sn2S6)的新双核过渡金属配合物)](2)和[{Mn(tepa)}(2)(mu-Sn2S6)](3)[tren =三(2-氨基乙基)胺,tepa =四亚乙基五胺]在甲醇热条件下制备。 Mn2 +和Zn2 +离子由tren配体配位,形成[TM(tren)](2+)(TM = Mn,Zn)单元。作为双齿桥联配体,六硫代双锡酸[Sn2S6](4-)阴离子通过反式S原子连接两个[TM(tren)](2+)单元,形成中性络合物1和2。Mn2 +和Zn2 +离子都位于一个三角双锥体环境。在图3中,Mn 2+离子结合五齿tepa配体以给出[Mn(tepa)](2+)单元。两个[Mn(tepa)](2+)单元通过mu-Sn2S6桥接配体连接,形成中性络合物[{Mn(tepa)}(2)(mu-Sn2S6)],其中Mn2 +离子位于八面体环境。分子间的N-H中心点中心点中心点S H键合相互作用将1-3连接到分层结构中,而3则通过N-H中心点中心点中心点S H-键结形成三维网络。图1-3示出了可能的半导体性质,带隙分别为2.3、2.7和2.4eV。

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