Chiral hole: The first chiral microporous germanium antimony sulfide with 3D helical channels was constructed by the unprecedented combination of {GeS4} tetrahedra and ψ‐{SbS4} trigonal bipyramids. The dimethylammonium cations present in the structure are easily exchanged with alkali metal cations present in aqueous solution. The title compound has high ion‐exchange capacity and high selectivity for Cs+ ions.

Two novel indium chalcogenidoantimonates and their quaternary mixed solid solutions with a layered structure of [In 2 Sb 2 S 7-x Se x ] n 2nÀ are successfully synthesized under mild solvothermal conditions. The compounds show a red-shift of their optical absorption edges and exhibit tunable photocatalytic activity for degradation of methyl orange (MO) with a shift of optical response from UV to the visible light region, as the proportions of Se increase.

In the presence of various organic amines/alkali metal cations or [TM(amine) m ] n+ complexes as templates or structure-directing agents, a series of mercury antimony chalcogenide compounds have been solvothermally synthesized and structurally characterized. The compound [(Me)2NH2]2HgSb8S14 (1) features a one-dimensional (1D) [HgSb8S14] n 2n− ribbon built from two 1D-[Sb4S7] n 2n− chains bridged by HgS2 units. The compounds [enH2]0.5HgSbS3 (2) (en = ethylenediamine), [tetaH2]0.5HgSbS3 (3) (teta = triethylenetetramine), [1,2-pdaH]HgSbS3 (4) (1,2-pda = 1,2-diaminopropane), and [Ni(en)3]0.5HgSbS3 (5) feature two-dimensional (2D) layers of [HgSbS3] n n− with different structural motifs. The compound [tetaH2]0.25Rb0.5HgSbSe3 (6) exhibits a three-dimensional (3D) microporous framework structure of [HgSbSe3] n n− with cationic [tetaH2]2+ and Rb+ located in the channels. The optical absorption spectra indicate that all the compounds are semiconductors, with estimated bandgaps of 2.03 eV for 1, 2.49 eV for 2, 2.40 eV for 3, 2.55 eV for 4, 2.68 eV for 5, and 1.42 eV for 6, respectively. Thermal stabilities of these compounds have been investigated via thermogravimetric analyses.

Chirale Löcher: Die Titelverbindung mit helicalen dreidimensionalen Kanälen ist aus {GeS4}‐Tetraedern und trigonalen ψ‐{SbS4}‐Bipyramiden aufgebaut. Die Struktur enthält Dimethylammoniumionen, die leicht gegen Alkalimetallkationen aus wässrigen Lösungen ausgetauscht werden können. Die Verbindung hat eine hohe Ionenaustauschkapazität und ist sehr selektiv für Cs+‐Ionen.

Germanium I 4700 Three-Dimensional Chiral Microporous Germanium Antimony Sulfide with Ion-Exchange Properties. -Yellow prismatic crystals of [Me 2 NH 2 ] 2 [Sb 2 GeS 6 ] are solvothermally prepared from a mixture of Sb, GeO2, and sulfur in DMF (autoclave, 160°C, 7 d, 17% yield). The compound crystallizes in the tetragonal space group P412121 (Z = 4) with a three-dimensional network containing three-dimensional chiral channels. Its organic cations can be partially exchanged by Cs + , Rb + , K + , and Na + in aqueous solutions. The ion-exchange product with CsCl in water, [Me2NH2]0.19Cs1.81[Sb2GeS6]·3H2O, is characterized by single crystal XRD. It also crystallizes in the tetragonal space group P412121 with Z = 4. [Me2NH2]2[Sb2GeS6]shows high ion-exchange capacity and high selectivity for Cs + ions, and is thus a material with the potential for remediation of radioactive Cs + ions from nuclear-waste solutions. -(FENG, M.-L.; KONG, D.-N.; XIE, Z.-L.; HUANG*, X.-Y.; Angew.