A Study of the Interactions in an Extended Unsupported Gold-Silver Chain

Abstract

The complex [Ag(Py)3][Au(C6F5)2]·Py (1) (Py = pyridine) has been prepared by the reaction of NBu4[Au(C6F5)2] with AgClO4 in the presence of pyridine. The crystallographic measurements indicate the presence of an extended unsupported one‐dimensional chain of alternating gold and silver atoms. This arrangement is due to the formation of molecular Au−Ag ion pairs, to the π‐stacking of C6F5 and pyridine arene ligands and to the packing effects that lead to molecular ion pairs at short distance. Theoretical calculations based on approximate experimental distances and angles reveal the presence of both metallophilic AuI−AgI and aromatic C6F5‐pyridine interactions. From a theoretical point of view the nature of the intermetallic attraction arises from both an ionic contribution and from dispersion‐type correlation effects; the aromatic interaction is mainly due to dispersion‐type correlation effects.

Preparation of Au(I), Ag(I), and Pd(II) N-Heterocyclic Carbene Complexes Utilizing a Methylpyridyl-Substituted NHC Ligand. Formation of a Luminescent Coordination Polymer

“…The heterometallic interactions have often been shorter than homometallic interactions, and recent reports have attributed this to the attractive dipolar interactions between dissimilar metals. [12][13][14] Additionally, the Au(I)-Ag(I) separations observed in 4 compare well with those observed by Ferna ´ndez, Laguna, and co-workers 15 in the decanuclear, carboxylate-bridged polymer that contains short, mixed-metal separations of 2.8226(4) and 2.8993(4) Å. A shorter Au(I)-Ag(I) separation of 2.8245(6) Å is found in the mesityl, tetrahydrothiophene-bridging dinuclear polymer, [{(PPh 3 )Au(µ-mes)(µ-tht)Ag] 2+ } n 16 while longer Au-(I)-Ag(I) distances (2.9010(6)-3.0134(6) Å) are found in the carboxylate-bridged, square pyramidal Au 4 Ag cluster, [Au(3,5-C 6 Cl 2 F 3 ) 2 Ag 4 (CF 3 CO 2 ) 5 ] 2-.…”

Preparation of Au(I), Ag(I), and Pd(II) N-Heterocyclic Carbene Complexes Utilizing a Methylpyridyl-Substituted NHC Ligand. Formation of a Luminescent Coordination Polymer

“…The heterometallic interactions have often been shorter than homometallic interactions, and recent reports have attributed this to the attractive dipolar interactions between dissimilar metals. [12][13][14] Additionally, the Au(I)-Ag(I) separations observed in 4 compare well with those observed by Ferna ´ndez, Laguna, and co-workers 15 in the decanuclear, carboxylate-bridged polymer that contains short, mixed-metal separations of 2.8226(4) and 2.8993(4) Å. A shorter Au(I)-Ag(I) separation of 2.8245(6) Å is found in the mesityl, tetrahydrothiophene-bridging dinuclear polymer, [{(PPh 3 )Au(µ-mes)(µ-tht)Ag] 2+ } n 16 while longer Au-(I)-Ag(I) distances (2.9010(6)-3.0134(6) Å) are found in the carboxylate-bridged, square pyramidal Au 4 Ag cluster, [Au(3,5-C 6 Cl 2 F 3 ) 2 Ag 4 (CF 3 CO 2 ) 5 ] 2-.…”

Silver Compounds in Synthetic Chemistry. 1 A Facile Preparative Route for Pentafluorophenylsilver, AgC 6 F 5 and its Use as an Oxidative Pentafluorophenyl Group Transfer Reagent in Reactions with Group 12 to 16 Elements — the Single Crystal Structure of AgC 6 F 5 · EtCN, the First Arylsilver Derivative Crystallising in Infinite Chains

“…Hence, AgC 6 F 5 · EtCN is the first example exhibiting an infinite chain. On the other hand a similar arrangement was found for the mixed silver gold compound [Ag(C 5 H 5 N) 3 ][Au(C 6 F 5 ) 2 ] · C 5 H 5 N [23].…”

Pentafluorophenyl Silver: Structure and Bonding of Arene Solvates

“…A similar structural motif was found for the mixed silver−gold compound [Ag(C 5 H 5 N) 3 ][Au(C 6 F 5 ) 2 ]•C 5 H 5 N 19. Herein we report the synthesis and full characterization of a series of [AgC 6F 5 ]•arene complexes (arene = RC 6 H 5 with R = Me, Et; R 2 C 6 H 4 , R 3 C 6 H 3 , R 4 C 6 H 2 , and R 5 C 6 H with R = Me).…”

Preparation of Au(I), Ag(I), and Pd(II) N-Heterocyclic Carbene Complexes Utilizing a Methylpyridyl-Substituted NHC Ligand. Formation of a Luminescent Coordination Polymer

“…The heterometallic interactions have often been shorter than homometallic interactions, and recent reports have attributed this to the attractive dipolar interactions between dissimilar metals. [12][13][14] Additionally, the Au(I)-Ag(I) separations observed in 4 compare well with those observed by Ferna ´ndez, Laguna, and co-workers 15 in the decanuclear, carboxylate-bridged polymer that contains short, mixed-metal separations of 2.8226(4) and 2.8993(4) Å. A shorter Au(I)-Ag(I) separation of 2.8245(6) Å is found in the mesityl, tetrahydrothiophene-bridging dinuclear polymer, [{(PPh 3 )Au(µ-mes)(µ-tht)Ag] 2+ } n 16 while longer Au-(I)-Ag(I) distances (2.9010(6)-3.0134(6) Å) are found in the carboxylate-bridged, square pyramidal Au 4 Ag cluster, [Au(3,5-C 6 Cl 2 F 3 ) 2 Ag 4 (CF 3 CO 2 ) 5 ] 2-.…”

Silver Compounds in Synthetic Chemistry. 1 A Facile Preparative Route for Pentafluorophenylsilver, AgC 6 F 5 and its Use as an Oxidative Pentafluorophenyl Group Transfer Reagent in Reactions with Group 12 to 16 Elements — the Single Crystal Structure of AgC 6 F 5 · EtCN, the First Arylsilver Derivative Crystallising in Infinite Chains

“…Hence, AgC 6 F 5 · EtCN is the first example exhibiting an infinite chain. On the other hand a similar arrangement was found for the mixed silver gold compound [Ag(C 5 H 5 N) 3 ][Au(C 6 F 5 ) 2 ] · C 5 H 5 N [23].…”

Pentafluorophenyl Silver: Structure and Bonding of Arene Solvates

“…A similar structural motif was found for the mixed silver−gold compound [Ag(C 5 H 5 N) 3 ][Au(C 6 F 5 ) 2 ]•C 5 H 5 N 19. Herein we report the synthesis and full characterization of a series of [AgC 6F 5 ]•arene complexes (arene = RC 6 H 5 with R = Me, Et; R 2 C 6 H 4 , R 3 C 6 H 3 , R 4 C 6 H 2 , and R 5 C 6 H with R = Me).…”

Preparation of Au(I), Ag(I), and Pd(II) N-Heterocyclic Carbene Complexes Utilizing a Methylpyridyl-Substituted NHC Ligand. Formation of a Luminescent Coordination Polymer

“…The heterometallic interactions have often been shorter than homometallic interactions, and recent reports have attributed this to the attractive dipolar interactions between dissimilar metals. [12][13][14] Additionally, the Au(I)-Ag(I) separations observed in 4 compare well with those observed by Ferna ´ndez, Laguna, and co-workers 15 in the decanuclear, carboxylate-bridged polymer that contains short, mixed-metal separations of 2.8226(4) and 2.8993(4) Å. A shorter Au(I)-Ag(I) separation of 2.8245(6) Å is found in the mesityl, tetrahydrothiophene-bridging dinuclear polymer, [{(PPh 3 )Au(µ-mes)(µ-tht)Ag] 2+ } n 16 while longer Au-(I)-Ag(I) distances (2.9010(6)-3.0134(6) Å) are found in the carboxylate-bridged, square pyramidal Au 4 Ag cluster, [Au(3,5-C 6 Cl 2 F 3 ) 2 Ag 4 (CF 3 CO 2 ) 5 ] 2-.…”

Silver Compounds in Synthetic Chemistry. 1 A Facile Preparative Route for Pentafluorophenylsilver, AgC 6 F 5 and its Use as an Oxidative Pentafluorophenyl Group Transfer Reagent in Reactions with Group 12 to 16 Elements — the Single Crystal Structure of AgC 6 F 5 · EtCN, the First Arylsilver Derivative Crystallising in Infinite Chains

“…Hence, AgC 6 F 5 · EtCN is the first example exhibiting an infinite chain. On the other hand a similar arrangement was found for the mixed silver gold compound [Ag(C 5 H 5 N) 3 ][Au(C 6 F 5 ) 2 ] · C 5 H 5 N [23].…”

Pentafluorophenyl Silver: Structure and Bonding of Arene Solvates

“…A similar structural motif was found for the mixed silver−gold compound [Ag(C 5 H 5 N) 3 ][Au(C 6 F 5 ) 2 ]•C 5 H 5 N 19. Herein we report the synthesis and full characterization of a series of [AgC 6F 5 ]•arene complexes (arene = RC 6 H 5 with R = Me, Et; R 2 C 6 H 4 , R 3 C 6 H 3 , R 4 C 6 H 2 , and R 5 C 6 H with R = Me).…”