Chloro(tetrahydrothiophene)gold(I)

Chloro(tetrahydrothiophene)gold(I)
Identifiers
CAS Number	39929-21-0;
3D model (JSmol)	Interactive image;
ChemSpider	9956880;
PubChem CID	11782199;
	InChI InChI=1S/C4H8S.Au.ClH/c1-2-4-5-3-1;;/h1-4H2;;1H/q;+1;/p-1 Key: UCGCVRKULHHWGA-UHFFFAOYSA-M;
	SMILES C1CCSC1.Cl[Au];
Properties
Chemical formula	C4H8AuClS
Molar mass	320.58 g·mol−1
Appearance	White to off-white powder
Related compounds
Related compounds	chloro(dimethyl sulfide)gold(I), bromo(tetrahydrothiophene)gold(I)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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	Infobox references

Chloro(tetrahydrothiophene)gold(I), abbreviated (tht)AuCl, is a coordination complex of gold. Like the dimethyl sulfide analog, this compound is used as a convenient entry point to gold chemistry. The tetrahydrothiophene ligand is labile and is readily substituted with other stronger ligands.

Preparation

This compound is not commonly available commercially. It may be prepared by the reaction of tetrachloroauric acid with tetrahydrothiophene:[1]

HAuCl₄ + 2 SC₄H₈ + H₂O → AuCl(SC₄H₈) + OSC₄H₈ + 3 HCl

The complex adopts a linear coordination geometry, which is typical of most gold(I) compounds. It crystallizes in the orthorhombic space group Pmc2₁ with a = 6.540(1) Å, b = 8.192(1) Å, c = 12.794(3) Å with Z = 4 formula units per unit cell. The bromide congener is isostructural.[2]

It is somewhat less thermally labile compared to (Me₂S)AuCl, but is still sensitive to temperature and light.

References

Uson, R.; Laguna, A.; Laguna, M.; Briggs, D. A.; Murray, H. H.; Fackler., J. P. (2007). "(Tetrahydrothiophene)Gold(I) or Gold(III) Complexes". Inorg. Synth. 26: 85–91. doi:10.1002/9780470132579.ch17.
Ahrland, Sten; Dreisch, Klaus; Norén, Bertil; Oskarsson, Ake (1993). "Metal-metal interactions in chain compounds of gold(I): syntheses and crystal structures of chlorotetrahydrothiophenegold(I), bromotetrahydrothiophenegold(I) and iodotetrahydroselenophenegold(I)". Materials Chemistry and Physics. 35 (3–4): 281–289. doi:10.1016/0254-0584(93)90144-B.

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[1] Uson, R.; Laguna, A.; Laguna, M.; Briggs, D. A.; Murray, H. H.; Fackler., J. P. (2007). "(Tetrahydrothiophene)Gold(I) or Gold(III) Complexes". Inorg. Synth. 26: 85–91. doi:10.1002/9780470132579.ch17.

[2] Ahrland, Sten; Dreisch, Klaus; Norén, Bertil; Oskarsson, Ake (1993). "Metal-metal interactions in chain compounds of gold(I): syntheses and crystal structures of chlorotetrahydrothiophenegold(I), bromotetrahydrothiophenegold(I) and iodotetrahydroselenophenegold(I)". Materials Chemistry and Physics. 35 (3–4): 281–289. doi:10.1016/0254-0584(93)90144-B.