TY - JOUR
T1 - Supramolecular chemistry of gold(I) thiocyanate complexes with thiophene, phosphine and isocyanide ligands, and the structure of 2,6-dimethylphenyl isocyanide
AU - Mathieson, T.
AU - Schier, A.
AU - Schmidbaur, H.
PY - 2001
Y1 - 2001
N2 - The reaction of equivalent quantities of (L)AuCl (L = tetrahydrothiophene, trimethylphosphine, 2,6-xylyl isocyanide or mesityl isocyanide) and KSCN in CH2Cl2-water gave (L)Au(SCN) in excellent yield. The products were formed through Cl ↔ (SCN) anion exchange in the two-phase systems. Crystals of (THT)Au(SCN) contain short inter-ion Au···Au contacts (3.006 Å) within chain polymers of alternating cations [Au(THT)2]+ and anions [(NCS)2Au]-. The crystal structure of (Me3P)Au(SCN) exhibits dimers based on short Au···Au contacts of 3.099 Å. The dimers appear to aggregate further by long Au···S contacts giving a tetrameric motif. Molecules of (2,6-Me2C6H3NC)Au(SCN) crystallise as flat, centrosymmetric dimers with long intermolecular Au···Au and Au···S contacts. Although the general aurophilic motif of (2,4,6-Me3C6H2NC)Au(SCN) is similar to (2,6-Me3C6H3NC)Au(SCN), its structure has two different dimers formed from similar monomers. The crystal structure of 2,6-Me2C6H3NC was also characterised and (consistent with bonding theory of metal isocyanides) exhibited a C≡N bond which is slightly longer than in the gold(I) complex.
AB - The reaction of equivalent quantities of (L)AuCl (L = tetrahydrothiophene, trimethylphosphine, 2,6-xylyl isocyanide or mesityl isocyanide) and KSCN in CH2Cl2-water gave (L)Au(SCN) in excellent yield. The products were formed through Cl ↔ (SCN) anion exchange in the two-phase systems. Crystals of (THT)Au(SCN) contain short inter-ion Au···Au contacts (3.006 Å) within chain polymers of alternating cations [Au(THT)2]+ and anions [(NCS)2Au]-. The crystal structure of (Me3P)Au(SCN) exhibits dimers based on short Au···Au contacts of 3.099 Å. The dimers appear to aggregate further by long Au···S contacts giving a tetrameric motif. Molecules of (2,6-Me2C6H3NC)Au(SCN) crystallise as flat, centrosymmetric dimers with long intermolecular Au···Au and Au···S contacts. Although the general aurophilic motif of (2,4,6-Me3C6H2NC)Au(SCN) is similar to (2,6-Me3C6H3NC)Au(SCN), its structure has two different dimers formed from similar monomers. The crystal structure of 2,6-Me2C6H3NC was also characterised and (consistent with bonding theory of metal isocyanides) exhibited a C≡N bond which is slightly longer than in the gold(I) complex.
UR - http://www.scopus.com/inward/record.url?scp=0034743849&partnerID=8YFLogxK
U2 - 10.1039/b100117p
DO - 10.1039/b100117p
M3 - Article
AN - SCOPUS:0034743849
SN - 1470-479X
SP - 1196
EP - 1200
JO - Journal of the Chemical Society. Dalton Transactions
JF - Journal of the Chemical Society. Dalton Transactions
IS - 8
ER -