Journal
INORGANIC CHEMISTRY
Volume 45, Issue 5, Pages 2132-2142Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ic052025a
Keywords
-
Categories
Ask authors/readers for more resources
The effect of metal complexation on the structure and properties of the electroactive bis(l-methylthioimidazolyl)methane linkage isomers CH2(N-tim)(2) (L1) and CH2(S-tim)(2) (L2) has been explored. Coordination polymers {[Ag(L1)(2)]X}(n) (X = BF4, PF6) are formed by bridging L1 between tetrahedral silver centers giving two-dimensional cationic sheets composed of AgS4 linkages; the anions are sandwiched between sheets. Cyclic climers {[Ag-2(L2)(2)]-X-2} (X = BF4, PF6, OSO2CF3) are formed when L2:AgX ratios are lower than 1.5. When L2:AgPF6 was 1.5 or higher, the complex [Ag-4(L2)(5)](PF5)(4) could be isolated as a solvate. The NMR, IR, electrochemical, and ESI(+) mass spectral data of this latter compound indicate that extensive dissociation to the cyclic dimer and free ligand occurs in solution. Finally, a Cambridge Structural Database search was performed to provide insight into reasonable silver-sulfur bond distances, since literature values appeared to vary widely between 2.3 and 3.2 angstrom. It was found that these distances increase with increasing coordination number of silver. The average distances for 2-, 3-, 4-, 5-, and 6-coordinate silver were found to be 2.40, 2.52, 2.62, 2.70, and 2.75 angstrom, respectively.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available