Synthesis and crystal structure of a hexanuclear silver(I) cluster [Ag(Hmna)]6·4H2O (H2mna = 2-mercaptonicotinic acid) and a supramolecular gold(I) complex H[Au(Hmna)2] in the solid state, and their antimicrobial activities

Nomiya, Kenji; Takahashi, Satoshi; Noguchi, Ryusuke

doi:10.1039/b001664k

Cited by 125 publications

(68 citation statements)

References 32 publications

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“…Different activities were also previously found for equivalent Ag and Au complexes with P-donor [28], S-donor [13] or N-donor ligands [47]. As an interesting example in the latter case, it was shown [47] that [1-benzyl-3-tert-butylimidazol-2-ylidene]AuCl has significant activity against B. subtilis and that this activity is higher than that of the equivalent silver complex.…”

Section: Antimicrobial Activitymentioning

confidence: 83%

“…In contrast, only a very small increase in cell length was observed under equivalent incubation with the silver complex. A different mode of antimicrobial action for equivalent silver and gold complexes was also previously proposed by Nomiya et al [13,28]. and Na[Au(L)]·H 2 O show significant activity against the Gram(+) bacteria S. aureus and B. subtilis.…”

Section: Antimicrobial Activitymentioning

confidence: 95%

“…1 H, 13 C and DEPT NMR spectra in solution were recorded in dimethyl sulfoxide (DMSO)-d 6 at room temperature on a Bruker AMX 300 spectrometer operating at 300. H NMR spectra are defined as s0 singlet, d0doublet, t0triplet, m0multiplet, pst0pseudotriplet and br0broad.…”

Section: Methodsmentioning

confidence: 99%

“…In this last field, the compounds under investigation include a major collection of the type R 3 PAuL, in which the gold atom is coordinated to a phosphine ligand and L is an O- [26,27], N- [28,29], Cl- [30] or S- [29,[31][32][33][34][35] 2 ], Na 3 [Au(mna) 2 ] (H 2 mna 02-mercaptonicotinic acid) [13] and the cationic complexes [Au(L) 2 ](NO 3 ) 3 (L01-[2-(acridin-9-ylamino)ethyl]-1,3-dimethylthiourea) [34]. For the latter ligand, compounds of the type [Au(L)]Br, [Au(L)] SCN and [Au(L)]Cl were also prepared [34] and the coexistence of an S-donor ligand and a Cl ligand was also described for [LAuCl] (where L 02,3-diphenyl-1,3,4-thiadiazolium-5-thiolato-S exo ) [36].…”

Section: (L)] [Hq][ag(l)] (Hq0diisopropylammonium)mentioning

confidence: 99%

“…Silver compounds have mainly been studied for their widely known antibacterial effect; in fact, silver nitrate and certain silver complexes are still used against local infections [1][2][3]. From this perspective, compounds with Ag kernels have recently been prepared and studied, including examples containing Ag-N [4][5][6][7], Ag-O [8][9][10] and Ag-S [11][12][13][14][15] bonds and some with other additional bonds. In previous papers, we have contributed [14,15] to the study of Ag-S by preparing compounds of the type [Ag (HL)], [Ag 2 …”

Section: Introductionmentioning

confidence: 99%

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Synthesis and antimicrobial activities of gold(I) sulfanylcarboxylates

et al. 2012

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Reaction of NaAuCl 4 ·H 2 O and thiodiglycol (1:3 molar ratio) with 3-(aryl)-2-sulfanylpropenoic acids, C NMR spectroscopy. The antimicrobial activities of the complexes against Escherichia coli, Staphylococcus aureus, Bacillus subtilis, Candida albicans, Pseudomonas aeruginosa and carbapenem-resistant P. aeruginosa were evaluated and compared to those of the equivalent silver(I) complexes. The comparison shows that the gold compounds generally show better activity than the silver analogues against S. aureus and B. subtilis, but low sensitivity against E. coli, P. aeruginosa and C. albicans, suggesting a different mode of antimicrobial action for equivalent silver and gold compounds.

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Section: Antimicrobial Activitymentioning

confidence: 83%

Section: Antimicrobial Activitymentioning

confidence: 95%

Section: Methodsmentioning

confidence: 99%

Section: (L)] [Hq][ag(l)] (Hq0diisopropylammonium)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Synthesis and antimicrobial activities of gold(I) sulfanylcarboxylates

et al. 2012

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Argentophile Wechselwirkungen

2014

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Zwischen 1990 und 2000 wuchs in der Goldchemie das Interesse an aurophilen Wechselwirkungen, nachdem man festgestellt hatte, dass diese eine Vielzahl struktureller und anderer physikalischer Eigenschaften von Gold(I)‐Verbindungen nennenswert beeinflussen. Die Aufmerksamkeit, die man diesem kontraintuitiven inter‐ und intramolekularen Typ von Bindung zwischen Metallzentren mit scheinbar abgeschlossener Elektronenschale entgegenbrachte, hat sich schnell auch auf die Chemie des Silbers ausgeweitet. Hunderte von Untersuchungen widmeten sich seither dem Phänomen der Argentophilie. Dieser Aufsatz gibt einen Überblick über diese Entwicklung mit Hauptaugenmerk auf molekularen Systemen mit zwei oder mehr in engem Kontakt stehenden Silber(I)‐Zentren, was zu spezifischen strukturellen sowie zu einer Vielzahl neuartiger physikalischer Eigenschaften führt. Diese schließen vor allem stark veränderte Ligand→Metall‐Ladungstransferprozesse ein, aber auch eine überdimensionale thermische Kontraktion auf der einen und eine beispiellose negative lineare Kompressibilität von Kristallparametern auf der anderen Seite.

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Argentophilic Interactions

2014

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The decade 1990-2000 saw a growing interest in aurophilic interactions in gold chemistry. These interactions were found to influence significantly a variety of structural and other physical characteristics of gold(I) compounds. The attention paid to this unusual and counterintuitive type of intra- and intermolecular bonding between seemingly closed-shell metal centers has rapidly been extended to also include silver chemistry. Hundreds of experimental and computational studies have since been dedicated to the argentophilicity phenomenon. The results of this development are reviewed herein focusing on molecular systems where two or more silver(I) centers are in close contact leading to specific structural characteristics and a variety of novel physical properties. These include strongly modified ligand-to-metal charge-transfer processes observed in absorption and emission spectroscopy, but also colossal positive and negative thermal expansion on the one hand and unprecedented negative linear compressibility of crystal parameters on the other.

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Synthesis and crystal structure of a hexanuclear silver(I) cluster [Ag(Hmna)]6·4H2O (H2mna = 2-mercaptonicotinic acid) and a supramolecular gold(I) complex H[Au(Hmna)2] in the solid state, and their antimicrobial activities

Cited by 125 publications

References 32 publications

Synthesis and antimicrobial activities of gold(I) sulfanylcarboxylates

Synthesis and antimicrobial activities of gold(I) sulfanylcarboxylates

Argentophile Wechselwirkungen

Argentophilic Interactions

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