Silver complexes stabilized by large silanethiolate ligands – crystal structures and luminescence properties

Abstract

Bulky silanethiolate and disiladithiolate ligands were applied to synthesize one mononuclear and three trinuclear silver complexes including two cyclic "microclusters" and a linear tri-nuclear silanethiolate complex. All obtained compounds are characterized by X-ray diffraction and FT-IR. NMR and emission spectroscopies were used where possible. The first trinuclear anionic silver thiolate is structurally characterized. The influence of the different charge of cyclic silver complexes as well as the overall ligand environment on the structural properties is demonstrated. The impact of the different synthetic routes on the final structures of the obtained clusters - cyclic or linear - is discussed.

A Series of Homoleptic Linear Trimethylsilylchalcogenido Cuprates, Argentates and Aurates Cat[Me3SiE–M–ESiMe3] (M = Cu, Ag, Au; E = S, Se)

“…By analyzing and comparing the observed torsion angles α­(Si–E–E–Si), it became evident that all molecular structures of 1 – 6 display their E-silyl substituent in a quasi- gauche conformation with respect to the linear E–(M)–E axis. First, this seemed to be unexpected, as for steric reasons such molecules might have favored an anti- conformation as observed in the aforementioned structurally characterized [Cu­(SSiPh 3 ) 2 ] − , [Ag­(SSiR 3 ) 2 ] − , , and the 1-adamanylthiolato-cuprate [Cu­(SAd) 2 ] − . On the other hand organothiolates [Cu­(S t Bu) 2 ] − and [Au­(SeCF 3 ) 2 ] − also show this quasi- gauche conformation.…”

“…The largest differences between two independent anions are observed in silylsulfido-argentate 2 . While structurally comparable linearly coordinated cuprates and argentates with silylthiolate moieties [Cu­(SSiPh 3 ) 2 ] −25 and [Ag­(SSiR 3 ) 2 ] − (R = bis­(diisopropyl)­phenolate (OC 12 H 17 )) , are known, the title compounds comprise the first structurally characterized silylselenido cuprates or argentates and silylchalcogenido aurates.…”

Silver(I) and Gold(I) Monothiocarbonate Complexes: Synthesis, Structure, Luminescence

“…Single crystals of 1 were obtained by slow diffusion of diethyl ether vapour into a concentrated dichloromethane solution at 4 • C. Although there are a number of luminescent silver(I) complexes with S-donor ligands and short Ag•••Ag interactions reported [23][24][25][26][27][28][29][30][31], complex 1 marks the first silver(I) monothiocarbonate complex to be structurally characterised by SC-XRD. Complex 1 crystallised as colourless long needles in the orthorhombic Pca2 1 space group.…”

Facile Synthesis of Ag‐TiO2 Hybrid Nanocluster:A Comprehensive Experimental and Computational Insight into the Role of Surface Ligands on Enhanced Visible Light Photo‐catalysis

“…While, in L3 ligand, we couldn't manage to get stable structure of three Ag atoms with four ‐SCH 3 groups, which is in accordance with earlier work of Ciborska et al. . This lack of excess charge in the L3 ligand and hence weak interaction with TiO 2 molecule is observed as a weak band at 510 nm in the visible region (Figure ).…”