Monomeric T-shaped planar silver(I) carboxylate and silver(I) halide complexes

Lang, Heinrich; Leschke, M.; Rheinwald, Gerd; Melter, Michael

doi:10.1016/s1387-7003(98)00071-9

Cited by 22 publications

(19 citation statements)

References 25 publications

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“…59 Moreover, the OÀAg bond distances, ranging from 2.513(3) to 2.607(4) Å in our complexes, are much longer than the normal covalent silver(I)Àoxygen bond length of about 2.3 Å indicating that the sulfonate arms in 2 and 5 are only weakly bonded to the metal.…”

Section: Articlementioning

confidence: 63%

Synthesis, Antimicrobial and Antiproliferative Activity of Novel Silver(I) Tris(pyrazolyl)methanesulfonate and 1,3,5-Triaza-7-phosphadamantane Complexes

Pettinari

Marchetti²,

Lupidi³

et al. 2011

Inorg. Chem.

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4), and [Ag(Tpms)(PTA)] (5) {Tpms = tris(pyrazol-1-yl)methanesulfonate, PPh3 = triphenylphosphane, PCy3 = tricyclohexylphosphane, PTA = 1,3,5-triaza-7-phosphaadamantane) have been synthesized and fully characterized by elemental analyses, H-1, C-13, and P-31 NMR, electrospray ionization mass spectrometry (ESI-MS), and IR spectroscopic techniques. The single crystal X-ray diffraction study of 3 shows the Tpms ligand acting in the N-3-facially coordinating mode, while in 2 and 5 a N2O-coordination is found, with the SO3 group bonded to silver and a pendant free pyrazolyl ring. Features of the tilting in the coordinated pyrazolyl rings in these cases suggest that this inequivalence is related with the cone angles of the phosphanes. A detailed study of antimycobacterial and antiproliferative properties of all compounds has been carried out. They were screened for their in vitro antimicrobial activities against the standard strains Enterococcus faecalis (ATCC 29922), Staphylococcus aureus (ATCC 25923), Streptococcus pneumoniae (ATCC 49619), Streptococcus pyogenes (SF37), Streptococcus sanguinis (SK36), Streptococcus mutans (UA1S9), Escherichia coli (ATCC 25922), and the fungus Candida albicans (ATCC 24443). Complexes 1-5 have been found to display effective antimicrobial activity against the series of bacteria and fungi, and some of them are potential candidates for antiseptic or disinfectant drugs. Interaction of Ag complexes with deoxyribonucleic acid (DNA) has been studied by fluorescence spectroscopic techniques, using ethidium bromide (EB) as a fluorescence probe of DNA. The decrease in the fluorescence of DNA EB system on addition of Ag complexes shows that the fluorescence quenching of DNA EB complex occurs and compound 3 is particularly active. Complexes 1-5 exhibit pronounced antiproliferative activity against human malignant melanoma (A375) with an activity often higher than that of AgNO3, which has been used as a control, following the same order of activity inhibition on DNA, i.e., 3 > 2 > 1 > 5 > AgNO3 >> 4.

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Section: Articlementioning

confidence: 63%

Synthesis, Antimicrobial and Antiproliferative Activity of Novel Silver(I) Tris(pyrazolyl)methanesulfonate and 1,3,5-Triaza-7-phosphadamantane Complexes

Pettinari

Marchetti²,

Lupidi³

et al. 2011

Inorg. Chem.

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“…[3,4] Im Vergleich dazu ist über P(C 6 H 4 CH 2 NMe 2 -2) 3 -stabilisierte Gruppe-11 Metallkomplexe mit der Koordinationszahl 4 nur wenig bekannt [5]. Während Kupfer(I)-Komplexe mit dem Phosphanliganden P(C 6 H 4 CH 2 NMe 2 -2) 3 in der Regel eine trigonal-planare Anordnung aufweisen, findet man für Silber(I)-Komplexe gleicher Zusammensetzung als am meisten bevorzugte Koordinationsform die T-Form.…”

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“…1 H-NMR in CDCl 3 /δ: 1.84 (s, 18 H, NMe 2 ),3.76 (bs, 6 H, CH 2 ), 7.11 (pt, J HH ϭ 6.9 Hz, 3 H, C 6 H 4 ), 7.3Ϫ7.5 (m, 9 H, C 6 H 4 ),8.0 (dd,3 J HH ϭ 8.2 Hz, 4 J HH ϭ 4.6 Hz, 2 H, phen), 8.1 (s, 2 H, phen), 8.6 (d, 3 J HH ϭ 8.2 Hz, 2 H, phen), 8.7 (d, 3 J HH ϭ 4.1 Hz, 2 H, phen). Fp.…”

mentioning

confidence: 99%

Bipy, Phen und P(C6H4CH2NMe2-2)3 in der Synthese kationischer Silber(I)-Komplexe; die Festkörperstrukturen von [P(C6H4CH2NMe2-2)3]AgOTf und [Ag(phen)2]OTf

Leschke

Rheinwald

Lang

2002

Z. anorg. allg. Chem.

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Professor Dieter Fenske zum 60. Geburtstag gewidmetInhaltsübersicht. Die Reaktion von [P(C 6 H 4 CH 2 NMe 2 -2) 3 ]AgX (1a, X ϭ OTf; 1b, X ϭ OClO 3 ) mit äquimolaren Mengen an L ʝ L (2a, L ʝ L ϭ 2,2Ј-Bipyridin, bipy; 2b, L ʝ L ϭ 4,4Ј-Dimethyl-2,2Јbipyridin, bipyЈ; 2c, L ʝ L ϭ 1,10-Phenanthrolin, phen) führt zu den kationischen Komplexen {[P(C 6 H 4 CH 2 NMe 2 -2) 3 ]Ag(L ʝ L)} ϩ X Ϫ (L ʝ L ϭ bipy: 3a, X ϭ OTf; 3b, X ϭ ClO 4 ; L ʝ L ϭ bipyЈ: 3c, X ϭ OTf; 3d, X ϭ ClO 4 ; L ʝ L ϭ phen: 3e, X ϭ OTf; 3f, X ϭ ClO 4 ), in denen die Bausteine L ʝ L und P(C 6 H 4 CH 2 NMe 2 -2) 3 als zweizähnige Chelatliganden an das Silberatom koordinativ gebunden sind. Laut spektroskopischen Befunden zeigt die Phosphangruppe P(C 6 H 4 CH 2 NMe 2 -2) 3 in Lösung dynamisches Verhalten, wobei auf der NMR-Zeitskala ein schneller Austausch der Me 2 NCH 2 -Seitenarme stattfindet. Während 3e im Festkörper beständig ist, beobachtet man für Lösungen von 3e, dass diese sich beim Erwärmen oder unter Einwirkung von Licht zersetzen. Unter Abscheidung von kolloidalem Silber läßt sich nach entsprechender Aufarbeitung neben dem Phosphan P(C 6 H 4 CH 2 NMe 2 -2) 3 (5) der Komplex [Ag(phen) 2 ]OTf (4) isolieren.Abstract. The reaction of [P(C 6 H 4 CH 2 NMe 2 -2) 3 ]AgX (1a, X ϭ OTf; 1b, X ϭ OClO 3 ) with equimolar amounts of L ʝ L (2a, L ʝ L ϭ 2,2Ј-bipyridine, bipy; 2b, L ʝ L ϭ 4,4Ј-dimethyl-2,2Ј-bipyridine, bipyЈ; 2c, L ʝ L ϭ 1,10-phenanthroline, phen) leads to the formation of the cationic complexes {[P(C 6 H 4 CH 2 NMe 2 -2) 3 ]Ag(L ʝ L)} ϩ X Ϫ (L ʝ L ϭ bipy: 3a, X ϭ OTf; 3b, X ϭ ClO 4 ; L ʝ L ϭ bipyЈ: 3c, X ϭ OTf; 3d, X ϭ ClO 4 ; L ʝ L ϭ phen: 3e, X ϭ OTf; 3f, X ϭ ClO 4 ) in which the building blocks L ʝ L and P(C 6 H 4 CH 2 NMe 2 -2) 3 act as bidentate chelating ligands and are datively-bound to the silver atom. Spectroscopic studies reveal that on the NMR time-scale the phosphane group is dynamic with exchanging the respective Me 2 NCH 2 built-in arms.While complex 3e is stable in the solid-state, it appeared that solutions of 3e start to decompose upon precipitation of colloidal silver when they are heated or irradiated with light, respectively. Appropriate work-up of the reaction mixture allows the isolation of the phosphane P(C 6 H 4 CH 2 NMe 2 -2) 3 (5) along with [Ag(phen) 2 ]OTf (4). 2470

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“…Silver(I) is particularly useful in the self-assembly of complex structures since it is a labile metal center with versatile coordination properties [4][5][6]. Silver(I) complexes with carboxylates and organic amines are a group of metal complexes that because of their versatile structures and wide usage in many fields have attracted much attention in recent years [7][8][9]. Studying the variety of products in the self-assembly processes between labile metal ions and multidentate ligands is an interesting topic in supramolecular chemistry.…”

Section: Introductionmentioning

confidence: 99%

Crystal structures of two new dinuclear Ag(I) complexes constructed from 4,4′-biphenyldicarboxylic acid and N-containing ligands

Lou¹,

Zheng

Chen

et al. 2011

J Struct Chem

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The reaction of silver 4,4′-biphenyldicarboxylate with 1,3-diaminopropane (DAP) and 2-amino-5-methylpyridine (AMP) respectively results in the formation of two dinuclear silver(I) complexes:The complexes are characterized by elemental analysis and X-ray crystallography. Complex 1 crystallizes in the triclinic system, P-1 space group, a = 8.585 (2) Å, b = 8.849(2) Å, c = 9.890(3) Å, α = 107.893(3)°, β = 94.139(3)°, γ = 113.202(3)°, V = 640.9(3) Å 3 , Z = 1. Complex 2 crystallizes in the triclinic system, P-1 space group, a = 11.818(3) Å, b = 13.132(4) Å, c = 13.281(4) Å, α = 92.571(4)°, β = 96.425(3)°, γ = 102.142(4)°, V = 1997.5(10) Å 3 , Z = 2. Complex 1 consists of a macrocyclic dinuclear silver(I) dication, a 4,4′-biphenyldicarboxylate anion, and two water molecules of crystallization. Each Ag atom is in a linear coordination. Complex 2 consists of a dinuclear silver(I) complex molecule and two water molecules of crystallization. Each Ag atom is in a T-shaped coordination. The Ag⋯Ag separations are 5.127(2) Å in 1 and 3.172(2) Å in 2.

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Monomeric T-shaped planar silver(I) carboxylate and silver(I) halide complexes

Cited by 22 publications

References 25 publications

Synthesis, Antimicrobial and Antiproliferative Activity of Novel Silver(I) Tris(pyrazolyl)methanesulfonate and 1,3,5-Triaza-7-phosphadamantane Complexes

Synthesis, Antimicrobial and Antiproliferative Activity of Novel Silver(I) Tris(pyrazolyl)methanesulfonate and 1,3,5-Triaza-7-phosphadamantane Complexes

Bipy, Phen und P(C6H4CH2NMe2-2)3 in der Synthese kationischer Silber(I)-Komplexe; die Festkörperstrukturen von [P(C6H4CH2NMe2-2)3]AgOTf und [Ag(phen)2]OTf

Crystal structures of two new dinuclear Ag(I) complexes constructed from 4,4′-biphenyldicarboxylic acid and N-containing ligands

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