Five‐Coordinate Sulfur in a Polymeric Copper(I) Thiolate Complex

Abstract

91-136. During the X-ray structure determination of butadiynedicarboxylic acid dihydrate ((1 = 3.75 A, @J = 90') the crystals turned purple then black, possibly indicating a polymerization reaction: J. D Dunitz, J. M. Robertson. J Chem.

Flexible CuI–Thiolate Clusters with Relevance to Metallothioneins

“…Each sulfur atom of the phenylthiolate ligand within the cluster adopts an approximate tetrahedral geometry that coordinates three trigonally coordinated copper atoms (triply bridging thiolate ligand). The Cu-S bond lengths [mean 2.2465(17) Å for 1 and mean 2.2502(18) Å for 2] [35] are dependent on the coordination number of the copper atom and distinct ranges can be distinguished: 2.14-2.17 Å for two coordinate [29,36] copper atoms, 2.22-2.23 Å for three coordinate [18,[23][24][25][26]37] copper atoms and 2.33-2.48 Å for four coordinate [38][39][40] copper atoms, and the Cu···Cu separations range from 2.8622(12) to 4.0699(13) Å for 1 and from 2.8242(13) to 4.0557(13) Å for 2. Bond lengths and angles are listed in Table 1.…”

Synthesis Of Some Novel Silver-Cysteamine Complexes

“…Cysteamine has been also used as a ligand in preparation of copper complexes by Parish and coworkers [3][4][5]. They investigated the structure of the complexes, as well as their biological properties.…”

The fourth crystallographic closest packing unveiled in the gold nanocluster crystal

“…Although thiolate or sulfido (-S-) can be found in the surface of gold nanoclusters as protecting ligands, both thiolate sulfur and sulfido (-S-) are always three-coordinate (mainly μ 2 -S and rarely μ 3 -S)2829, naturally raising the question of whether there are sulfurs with any other coordination numbers in gold nanoclusters. Notably, four-coordinate μ 4 -S and five-coordinate μ 4 -S have been reported in Cr(III) and Cu(I) complexes3031, respectively, but such high-coordinate sulfur has not been found in Au–S interfaces (not limited to gold nanoclusters).…”