Thiacalix[4]arene-protected alkynyl Ag ( = 9, 18) nanoclusters: syntheses, structural characterizations, photocurrent responses and fluorescence properties.

Two thiacalix[4]arene-protected silver(I) alkynyl nanoclusters, [Na(HO)][Ag(TC4A)(BuCC)(CHOH)(SbF)(OH)]·3.5HO·CHOH (1, abbreviated as Ag9) and [Ag(TC4A)(BuCC)(CFCOO)]·4CHOH (2, abbreviated as Ag18), were synthesized by the reaction of [BuCCAg], -butylthiacalix[4]arene (HTC4A), NaBH, and AgSbF or CFCOOAg in the mixed solvent of methanol-trichloromethane-toluene under solvothermal conditions, respectively. Driven by SbF and CFCOO with different coordination properties, the structural unit [Ag(TC4A)(BuCC)] in both the compounds migrated in different modes, accompanied by distinct Ag⋯Ag distances.

Carboxylate Ligand-supported Ag (n=21 and 24) Alkynyl Clusters Induced by Single/Double Carbonate Ions.

Structural transformation is important for the study of silver cluster compounds, in which controlled synthesis of their shapes and sizes via anion template-driven is one key scientific question. In this work, the CO anion templates were captured by the [ BuC≡CAg] system under the stimulation induced by carboxylate ligand CF COO /PhCOO , and two silver alkynyl clusters [(CO )@Ag ( BuC≡C) (CF COO) (H O)]⋅DMF⋅2CH Cl (1) and [(CO ) @Ag ( BuC≡C) (PhCOO) ]⋅CH OH⋅4DMF (2) have been successfully isolated and charactered. With the increase of the number of CO templates from single to double, the outer silver atoms from twenty-one to twenty-four, accompanied by the growth of the cluster skeleton from 9.

Trapping a [W O ] Decatungstate Anion in an Ag Nanowheel.

Compound [Ag (W O )(S Bu) (CF COO) ](CF COO)  ⋅ 6H O (1) was synthesized through a one-pot method. This is the first case of isolating a new silver thiolate cluster containing a [W O ] template which transforms from WO polyoxoanion through a self-assembly process. The anionic nature of the reduced [W O ] template and the effective silver-oxygen interaction contribute to the formation of the Ag nanowheel in 1.

Chiral Dodecanuclear Palladium(II) Thio Cluster: Synthesis, Structure, and Formation Mechanism Explored by ESI-MS and DFT Calculations.

The chiral dodecanuclear palladium(II) thio cluster LaPd12(C3H5NO2S)3(C3H6NO2S)21 (1) was prepared by reacting l-cysteine (l-Cys) with PdCl2 and La2O3 in aqueous solution under carefully controlled conditions. Compound 1 was structurally characterized by single-crystal XRD, TGA, IR, UV-vis, (13)C NMR, and CD spectroscopy. Insight into the dimerization process of 1 was obtained by ESI-MS and DFT calculations.

Cation-induced synthesis of new polyoxopalladates.

Seven polyoxopalladate compounds, [Pd(15)(SeO(3))(10)(μ(3)-O)(10)](10-), with Na(+) (1) and K(+) (2) as counterions, and Na(6)[M(II){Pd(12)(SeO(3))(8)(μ(4)-O)(8)}]·nH(2)O (M = Co (3), Zn (4), Ni (5), Cu (6), Mn (7); n = 7-9), have been prepared and characterized by SXRD, FT-IR, UV-vis, EA, TGA, and ESI-MS. These compounds comprise two distinct cluster configurations, {Pd(15)} and {M(II)Pd(12)}, which reveals the possibility of obtaining desired noble metal clusters with a certain nuclearity by using different cations as potential structural directing or template agents in synthesis. All compounds showed apparent absorptions in the visible light region, while 3 and 7 were found to show paramagnetic behavior typical of mononuclear Co(II) and Mn(II) complexes with zero-field splitting.