Luminescent coordination polymers with extended Au(I)–Ag(I) interactions supported by a pyridyl-substituted NHC ligand

A Dinuclear Gold(I)–Silver(I) Derivative of 2‐Cyclopentylidene‐2‐sulfanylacetic Acid and Related Complexes: Synthesis, Crystal Structures, Properties and Antitumor Activity

“…To the best of our knowledge, isolated dinuclear units containing an S-supported Ag-Au interaction have not previously been reported in the literature. [21] Shorter distances were also found in the trinuclear complex [AuAg 2 {(pyCH 2 ) 2 im} 2 (NCCH 3 ) 2 ](BF 4 ) 3 [(pyCH 2 ) 2 im = 1,3-bis(2-pyridylmethyl)imidazole], [22] in the tetranuclear cation [{(Ph 3 P)Au(μ-mes)Ag(thz)} 2 ] 2+ , [23] in the clusters [Au 6 Ag{μ-C 6 H 2 (CHMe 2 ) 3 } 6 ] + , [24] [Au 3 Ag(μ 3 -O)-(PPh 2 py) 3 ] 2+ , [25] [Au 5 Ag 8 (μ-dppm) 4 {1,2,3-C 6 (C 6 H 5 ) 3 }-(CϵCC 6 H 5 ) 7 ] 3+ [26] and (Bu 4 N) 2 [Au(3,5-C 6 F 3 Cl 2 ) 2 Ag 4 -(CF 3 COO) 5 ], [27,28] and in polymers such as [{Au(μ-mes)-AsPh 3 } 2 Ag](ClO 4 ), [29] [AgAu(mtp) 2 ] (mtp = diphenylmethylenethiophosphinato), [30] {[AuAg(Meimpy) 2 (L)](BF 4 ) 2 } n , {[AuAg(Meimpy) 2 (NO 3 )]NO 3 } n (Meimpy = methylimidazolepyridine; L = CH 3 CN, C 6 H 5 CN, C 6 H 5 CH 2 CN), [31] [Au 2 Ag 2 (C 6 F 5 ) 4 (OCMe 2 ) 2 ] n , [32] [Au 2 Ag 2 (C 6 F 5 ) 4 (NC-CH 3 ) 2 ] n , [33] or Ag([Au(μ-C 2 ,N 3 -bzim)] 3 ) 2 ·BF 4 ·CH 2 Cl 2 , [34,35] [AuAg 4 (mes)(CF 3 CO 2 ) 4 (tht)] n , [AuAg 4 (mes)(CF 3 CF 2 -CO 2 ) 4 (tht)] n , [AuAg 4 (mes)(CF 3 CF 2 CO 2 ) 4 (tht) 3 ] n , {[AuAg 4 -(mes)(CF 3 CO 2 ) 4 (tht)(H 2 O)]·H 2 O·CH 2 Cl 2 } n , [17] [AuAg 3 -(C 6 F 5 )(CF 3 CO 2 ) 3 (CH 2 PPh 3 )] n , [36] [AgAu(C 6 F 5 )(CF 3 CO 2 )-(tht)] n , [Ag 2 Au(C 6 Cl 2 F 3 )(CF 3 CO 2 ) 2 (tht)] n , and [AgAu-(C 6 Cl 5 )(CF 3 CO 2 )(tht)] n . [21] Shorter distances were also found in the trinuclear complex [AuAg 2 {(pyCH 2 ) 2 im} 2 (NCCH 3 ) 2 ](BF 4 ) 3 [(pyCH 2 ) 2 im = 1,3-bis(2-pyridylmethyl)imidazole], [22] in the tetranuclear cation [{(Ph 3 P)Au(μ-mes)Ag(thz)} 2 ] 2+ , [23] in the clusters [Au 6 Ag{μ-C 6 H 2 (CHMe 2 ) 3 } 6 ] + , [24] [Au 3 Ag(μ 3 -O)-(PPh 2 py) 3 ] 2+ , [25] [Au 5 Ag 8 (μ-dppm) 4 {1,2,3-C 6 (C 6 H 5 ) 3 }-(CϵCC 6 H 5 ) 7 ] 3+ [26] and (Bu 4 N) 2 [Au(3,5-C 6 F 3 Cl 2 ) 2 Ag 4 -(CF 3 COO) 5 ], [27,28] and in polymers such as [{Au(μ-mes)-AsPh 3 } 2 Ag](ClO 4 ), [29] [AgAu(mtp) 2 ] (mtp = diphenylmethy...…”

Luminescence of Supramolecular Gold‐Containing Materials

“…Starting from the complex [Au(Mepyim) 2 ]PF 6 , the reactions with equimolecular amounts of silver salts such as AgBF 4 or AgNO 3 in acetonitrile, benzonitrile or benzylnitrile gave rise to the synthesis of the polymeric species {[AuAg(Mepyim) 2 L] X} n (X ¼ PF 6 , L ¼ CH 3 CN, C 6 H 5 CN, C 6 H 5 CH 2 CN; X ¼ NO 3 , L ¼ NO 3 (CH 3 CN solvate)) [58]. All exhibited alternate sequences of gold and silver atoms that had Au-Ag interactions in a range between 2.8125(2) and 2.9428(2) Å.…”

Synthesis and Crystal Structure of 1-Methyl-3-(2-pyridyl)imidazolium Hexafluorophosphate

“…1-Methyl-3-(2-pyridyl)imidazolium hexafluorophosphate (MeIMPy)(PF 6 ) has been synthesized by slight modification from reported procedure [13]. The 2-chloropyridine and 1-methylimidazole were heated for 20 hours with neat condition.…”