Metal complexes of mercaptoamines—III. Different behaviour of β- and γ-(N,N-dimethyl)-mercaptoamines

Barrera, H.; Bayón, J. Carles; Suades, Joan; Germain, C.; Declerq, J. P.

doi:10.1016/s0277-5387(00)84654-9

Cited by 47 publications

(22 citation statements)

References 12 publications

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“…solubility). Third, the regular distribution of variously sized Pd clusters (for instance, the even-odd law) implies that they probably adopt similar structures as ones reported previously (see Table S1)11121314151617181920222324252627282930313233343536373839404142434445. Single crystal X-ray crystallography of [Pd(SC 2 H 4 Ph) 2 ] 6 demonstrate that six palladium atoms arranged in an approximately hexagonal ring, with six bridging sulfur atoms above and six below the plane (see Fig.…”

Section: Resultssupporting

confidence: 69%

“…Although tiara-like nickel complexes based on diverse thiolate ligands ([Ni(SR) 2 ] n with n = 4 ~ 6, 8 ~ 12111213141516171819222324252627282930313233343536373839) have been prepared (Table S1), only two sizes of Pd clusters ([Pd(SR) 2 ] 6 18204041424344 and [Pd(SR) 2 ] 8 2045) and one Pt cluster ([Pt(SCH 2 COOMe) 2 ] 8 45) have been reported. Additional questions that naturally arise include: Are there any other sized Pd (Pt) clusters beside the reported [Pd(SR) 2 ] 6 18204041424344 and [Pd(SR) 2 ] 8 2045 ([Pt(SCH 2 COOMe) 2 ] 8 45)?…”

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confidence: 99%

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Synthesis and Properties Evolution of a Family of Tiara-like Phenylethanethiolated Palladium Nanoclusters

Liu

Weng

Lin

et al. 2015

Sci Rep

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Tiara-like thiolated group 10 transition metal (Ni, Pd, Pt) nanoclusters have attracted extensive interest due to their fundamental scientific significance and potential application in a number of fields. However, the properties (e.g. the absorption) evolution with the ring size’s increase was not investigated so far to our best knowledge, due to the challenge of obtaining a series of nanocluster analogues. Herein, we successfully synthesized, isolated and identified a family of [Pd(SC2H4Ph)2]n nanoclusters (totally 17 novel clusters, n = 4–20). Their structures were determined to be tiara-like by single crystal X-ray crystallography together with theoretical calculation; their formation mechanism was proposed to be a substitution—polycondensation—ring-closure process based on experimental observations. All of these clusters are rather robust (anti-reductive and anti-oxidative) owing to their tiara-like structures with large HOMO-LUMO gaps. Finally, the optical and electrochemical evolution with the increase of ring size was investigated, and it is found that both optical and electrochemical gaps have a “turning point” at a size corresponding to n = 8 for [Pd(SR)2]n nanoclusters.

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Section: Resultssupporting

confidence: 69%

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confidence: 99%

Synthesis and Properties Evolution of a Family of Tiara-like Phenylethanethiolated Palladium Nanoclusters

Liu

Weng

Lin

et al. 2015

Sci Rep

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“…15,[18][19][20][21] Tiara-like nickel complexes have received considerable attention resulting in the preparation of complexes with a variety of ring sizes [Ni(-SR) 2 ] n (n = [4][5][6][8][9][10][11][12]. 15,[17][18][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] In contrast, although several tiara-like hexanuclear palladium complexes have been reported, 9,14,19,[36][37][38][39][40][41][42][43] only one octanuclear complex, i.e., [Pd(-S n Pr) 2 ] 8 , is known, and was obtained as a mixture with hexanuclear [Pd(-S n Pr) 2 ] 6 . 19 For platinum, infinite thiolates and selenolates [Pt(-ER) 2 ] ∞ (E = S, Se) have been synthesized using a solvothermal method; …”

Section: Introductionmentioning

confidence: 99%

Tiara-like Octanuclear Palladium(II) and Platinum(II) Thiolates and Their Inclusion Complexes with Dihalo- or Iodoalkanes

2014

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A tiara-like octanuclear palladium thiolate complex, [Pd(-SCH 2 CO 2 Me) 2 ] 8 that has a toroidal structure, was synthesized via reactions of either PdCl 2 with methyl thioglycolate/N,N-diisopropylethylamine (DIEA) (conventional method) or [PdCl 2 (MeCN) 2 ] with m-C 6 H 4 (CMe 2 SCH 2 CO 2 Me) 2 (alternative method). In the latter method, the tiara-like complex formed via the corresponding SCS-pincer complex and/or 1:1 PdCl 2 and ligand complexes. With respect to the platinum analogs, the alternative method efficiently produced the tiara-like octanuclear complex, [Pt(-SCH 2 CO 2 Me) 2 ] 8 , in high purity. Small molecules, such as CH 2 Cl 2 , ClCH 2 CH 2 Cl, CH 2 Br 2 , and CH 3 I, were accommodated in the inner voids of the tiara rings to form 1:1 inclusion complexes. These complexes are stabilized by weak CH···X hydrogen bonds (X = Cl or Br) between the methylene protons of four or eight axially positioned methoxycarbonylmethyl groups on the tiara rings and the halogen atoms of the guest molecules, as well as weak coordination of the halogen atoms to the transition-metal atoms.2

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“…Nickel (II) and palladium (II) frequently yield torusshaped complexes of molecular formula [M(SR) 2 ] n (n=4, 5, 6, or 8) when combined with thiols (Woodward et al, 1965;Kunchur, 1968;Gould & Harding, 1970;Alemany & Hoffmann, 1983;Barrera et al, 1984;Gaete et al, 1984;Dance et al, 1985;Yamamura, 1988;Koo, et al, 1988;Capdevila et al, 1989;Kruger et al, 1989). Most of the known toroid palladium complexes have the structure [M(SR) 2 ] 6 (Higgins & Suggs, 1988).…”

Section: Introductionmentioning

confidence: 99%

Polysulfonates Derived from Metal Thiolate Complexes as Inhibitors of HIV-1 and Various other Enveloped Viruses In Vitro

Bergstrom

Chen

Wood

et al. 2002

Antivir Chem Chemother

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Sodium 2-mercaptoethanesulfonate reacts with the metal ions Pd(II), Pt(II), Ag(I), Cd(II) and Zn(II) to yield complexes containing multiple anionic sulfonate sites. On the basis of spectroscopic and other analytical data the complexes were assigned the tentative molecular formulas: Pd6(SCH2CH2SO3Na)12, Ptn(SCH2CH2SO3Na)2n+2, Agn(SCH2CH2SO3Na)n, Na2Zn4(SCH2CH2SO3Na)10, and Na2Cd4(SCH2CH2SO3Na)10. The complexes displayed a variety of differences in activity towards DNA and RNA viruses. The platinum complex showed no measurable cytotoxicity and exhibited a spectrum of antiviral activity resembling that of dextran sulfate. It was active against HIV-1 and HIV-2, herpes simplex virus type 1 (HSV-1) and type 2 (HSV-2), thymidine kinase-deficient HSV-1, human cytomegalovirus, vesicular stomatitis virus (VSV), influenza A virus, respiratory syncytial virus (RSV), Sindbis virus, Junin virus and Tacaribe virus. The palladium complex also showed no measurable cytotoxicity, but was completely inactive against most viruses, with one notable exception: both HIV-1 and HIV-2 were substantially inhibited by the palladium complex. The silver complex showed significantly less antiviral activity and greater cytotoxicity than the platinum complex but did show some selectivity against RSV. The zinc complex showed only modest activity against VSV, RSV, Junin virus, and Tacaribe virus, and like the silver compound was more cytotoxic than either the platinum or palladium complex. The cadmium complex was toxic to all of the cell lines used for in vitro evaluation of antiviral activity. Based on these results, the platinum and palladium compounds appear to be promising candidates for further studies, that is, as vaginal microbicides in the prevention of genital HIV and/or HSV transmission.

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Metal complexes of mercaptoamines—III. Different behaviour of β- and γ-(N,N-dimethyl)-mercaptoamines

Cited by 47 publications

References 12 publications

Synthesis and Properties Evolution of a Family of Tiara-like Phenylethanethiolated Palladium Nanoclusters

Synthesis and Properties Evolution of a Family of Tiara-like Phenylethanethiolated Palladium Nanoclusters

Tiara-like Octanuclear Palladium(II) and Platinum(II) Thiolates and Their Inclusion Complexes with Dihalo- or Iodoalkanes

Polysulfonates Derived from Metal Thiolate Complexes as Inhibitors of HIV-1 and Various other Enveloped Viruses In Vitro

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