Crystal structure thiols

Zhu M, Aikens CM, Hollander FJ (2008) Correlating the crystal structure of a thiol-protected Au25 cluster and optical properties. J Am Chem Soc 130 5883-5885... 

A well researched and popular class of monolayers is based on the strong adsorption of thiols (R - SH), disulfides (R - S - S - R) and sulfides (R - S - R) onto metal surfaces. Although thiols, disulfides, and sulfides strongly align with a number of different metals Hke gold, silver, platinum, or copper, gold is usually the substrate of choice because of its inert properties and the formation of a well-defined crystal structure. 

The reaction of [TcOCU] with various monodentate aromatic thiols in methanol produces complexes of the general formula [TcO(SAr)4] (89), which can be precipitated with bulky cations. The X-ray crystal structure of the complex with Ar = mesityl has been elucidated and has square-pyramidal geometry, with the Tc atom displaced from the basal plane by about 0.846 Direct... 

Yamamoto, A., Tomoo, K., Doi, M, Ohishi, H., Inoue, M., Ishida, T., Yamamoto, D., Tsuboi, S., Okamoto, H., Okada, Y. (1992). Crystal structure of papain-succinyl-Gbi-Val-Val-Ala-Ala-p-nitroaniUde complex at 1.7-A resolution noncovalent binding mode of a common sequence of endogenous thiol protease inhibitors. Biochemistry 31,11305-11309. 

The reactions between K3[MoCl6] and various thiols yield dimeric or polymeric complexes of uncertain stoichiometry, thought to be [Mo2C14(SR)2(H20)3] or [Mo4Cl7(SR)5(H20)7], with magnetic moments which indicate considerable metal-metal interaction.42 Crystal structures... 

Figure 16-29 Drawing of the active site of galactose oxidase showing both the Cu(II) atom and the neighboring free radical on tyrosine 272, which has been modified by addition of the thiol of cysteine 228 and oxidation. See Halfen et al.557 Based on a crystal structure of Ito et al.558...

The crystal structure of the dithioacetylacetone (sacsacH) complex of cobalt(n), Co(sacsac)2, shows it to be monomeric square planar,164 in marked contrast to the acacH analogue. Pyridine 2-thiol (LH), which can exist as the thione tautomer (31) forms Co(LH)2X2 (X = Cl, Br, or I) complexes these contain the ligand bonded through the sulphur, as evidenced by the presence of a v(N—H) vibration in the i.r. spectra.165 Morpholine 4-thiocarbonic acid (32) also appears to be S-bonded in the CoL2X2 complexes (X = Cl, Br, or I), since the v(C=S) frequency is lowered upon co-ordination.166 The electronic spectra of the CoL2C12 complexes (L = thiourea, A-phenylthiourea, and TViV -diphenylthiourea) have been recorded.167... 

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