Solvothermal syntheses and characterizations of three new holmium selenidostannates(iv): a rare example of adamantane-like [Sn4Se10]4− selenidostannate(iv) with lanthanide complexes†
Abstract
Three new holmium selenidostannates(IV), [Ho(dap)4]2[Sn2Se6]Cl2 (1, dap = diaminopropane), {[Ho(dien)2]2(μ2-OH)2}[Sn2Se6] (2, dien = diethylenetriamine), and [Ho2(tepa)2(μ2-OH)2Cl2]2[Sn4Se10]·4H2O (3, tepa = tetraethylenepentamine), have been solvothermally synthesized and structurally characterized. 1 consists of two mononuclear [Ho(dap)4]3+ complex cations, one [Sn2Se6]4− anion built up from two [SnSe4] tetrahedra sharing a common edge, and two Cl− ions. 2 consists of one binuclear holmium(III) complex {[Ho(dien)2]2(μ2-OH)2}4+ cation and one dimeric [Sn2Se6]4− anion. 3 is composed of rare binuclear holmium(III) complex [Ho2(tepa)2(μ2-OH)2Cl2]2+ cations, adamantane-like [Sn4Se10]4− and free water molecules. Although a few chalcogenidostannates(IV) with lanthanide(III) complex cations acting as counterions have been reported, their anions are strongly dominated by the dimeric [Sn2Se6]4− moieties. 3 represents a rare example of an adamantane-like [Sn4Se10]4− selenidostannate with lanthanide complexes as counterions. The optical properties of 1–3 have been investigated by UV-vis spectroscopy.
![Graphical abstract: Solvothermal syntheses and characterizations of three new holmium selenidostannates(iv): a rare example of adamantane-like [Sn4Se10]4− selenidostannate(iv) with lanthanide complexes](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=C4DT00972J&imageInfo.ImageIdentifier.Year=2014)
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