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Journal articles on the topic 'Gold metal complexes'

Author: Grafiati

Published: 10 March 2023

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1

Zhou, Meng, Chenjie Zeng, Qi Li, Tatsuya Higaki, and Rongchao Jin. "Gold Nanoclusters: Bridging Gold Complexes and Plasmonic Nanoparticles in Photophysical Properties." Nanomaterials 9, no. 7 (2019): 933. http://dx.doi.org/10.3390/nano9070933.

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Recent advances in the determination of crystal structures and studies of optical properties of gold nanoclusters in the size range from tens to hundreds of gold atoms have started to reveal the grand evolution from gold complexes to nanoclusters and further to plasmonic nanoparticles. However, a detailed comparison of their photophysical properties is still lacking. Here, we compared the excited state behaviors of gold complexes, nanolcusters, and plasmonic nanoparticles, as well as small organic molecules by choosing four typical examples including the Au10 complex, Au25 nanocluster (1 nm me

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2

Kaub, Christoph, Sergei Lebedkin, Sebastian Bestgen, Ralf Köppe, Manfred M. Kappes, and Peter W. Roesky. "Defined tetranuclear coinage metal chains." Chemical Communications 53, no. 69 (2017): 9578–81. http://dx.doi.org/10.1039/c7cc04705c.

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Heterodimetallic gold/copper and gold/silver complexes were synthesized, and feature an unprecedented V-shape or linear MAu<sub>2</sub>M (M = Cu, Ag) setup in the solid state. Photoluminescence properties of the complexes strongly depend on the metal.

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3

Michalak and Kośnik. "Chiral N-heterocyclic Carbene Gold Complexes: Synthesis and Applications in Catalysis." Catalysts 9, no. 11 (2019): 890. http://dx.doi.org/10.3390/catal9110890.

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N-Heterocyclic carbenes have found many applications in modern metal catalysis, due to the formation of stable metal complexes, and organocatalysis. Among a myriad of N-heterocyclic carbene metal complexes, gold complexes have gained a lot of attention due to their unique propensity for the activation of carbon-carbon multiple bonds, allowing many useful transformations of alkynes, allenes, and alkenes, inaccessible by other metal complexes. The present review summarizes synthetic efforts towards the preparation of chiral N-heterocyclic gold(I) complexes exhibiting C2 and C1 symmetry, as well

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Dias, H. V. Rasika. "Polyfluorinated ligand-supported organometallic complexes of copper, silver, and gold." Pure and Applied Chemistry 82, no. 3 (2010): 649–56. http://dx.doi.org/10.1351/pac-con-09-10-19.

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The tris(pyrazolyl)borate [HB(3,5-(CF3)2Pz)3]− prepared using highly fluorinated 3,5-bis(trifluoromethyl)pyrazole and BH4− is an excellent supporting ligand for the stabilization of a number of rare organometallic complexes of coinage metals. For example, it has enabled the isolation of Cu(I), Ag(I), and Au(I) complexes of CO and ethylene as crystalline solids. Syntheses, spectroscopic and structural features, and properties of [HB(3,5-(CF3)2Pz)3]ML (M = Cu, Ag, Au; L = CO, C2H4) are the main focus of this discussion. Several metal adducts based on the tris(triazolyl)borate [HB(3,5-(CF3)2Tz)3]

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Aguado, Javier E., M. Concepción Gimeno, Peter G. Jones, and Antonio Laguna. "Unusual coordination behaviour of the ferrocenyl-terpyridine ligand with group 11 complexes." Canadian Journal of Chemistry 87, no. 1 (2009): 341–47. http://dx.doi.org/10.1139/v08-148.

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Complexes of the ligand Fcterpy (Fcterpy = 4′-ferrocenyl-2,2′:6′,2′-terpyridine) with group 11 metals display different coordination modes. The reaction with complexes [Cu(NO3)(PPh3)2] or [M(OTf)(PR3)] (OTf = trifluoromethyl sulphonate) gives the species [M(Fcterpy)(PR3)]X (M = Cu, X = PF6, PR3 = PPh3 (1); M = Ag, X = OTf, PR3 = PPh3 (2), PPh2Me (3); M = Au, X = OTf, PR3 = PPh3 (4)) in which the ligand is coordinated as a tridentate chelate to the metal. Treatment with [Cu(NCMe)4]PF6 or Ag(OTf) in 1:1 molar ratio gives the dinuclear complexes [M2(Fcterpy)2]X2 (M = Cu (5), Ag (6)), in which the

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6

Braunstein, Pierre, Michael Knorr, Antonio Tiripicchio, and Marisa Tiripicchio Camellini. "Competing metal-metal bonding in heterometallic complexes of gold and mercury. Synthesis of contrasting iron-gold-gold-iron and iron-mercury-iron complexes." Inorganic Chemistry 31, no. 18 (1992): 3685–87. http://dx.doi.org/10.1021/ic00044a002.

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7

Andrejević, Tina P., Biljana Đ. Glišić, and Miloš I. Djuran. "Amino Acids and Peptides as Versatile Ligands in the Synthesis of Antiproliferative Gold Complexes." Chemistry 2, no. 2 (2020): 203–18. http://dx.doi.org/10.3390/chemistry2020013.

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Gold complexes have been traditionally employed in medicine, and currently, some gold(I) complexes, such as auranofin, are clinically used in the treatment of rheumatoid arthritis. In the last decades, both gold(I) and gold(III) complexes with different types of ligands have gained considerable attention as potential antitumor agents, showing superior activity both in vitro and in vivo to some of the clinically used agents. The present review article summarizes the results achieved in the field of synthesis and evaluation of gold complexes with amino acids and peptides moieties for their cytot

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8

Bojan, Vilma R., José M. López-de-Luzuriaga, Elena Manso, Miguel Monge, and M. Elena Olmos. "Metal-Induced Phosphorescence in (Pentafluorophenyl)gold(III) Complexes." Organometallics 30, no. 17 (2011): 4486–89. http://dx.doi.org/10.1021/om200537w.

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9

Dahlen, Milena, Tim P. Seifert, Sergei Lebedkin, Michael T. Gamer, Manfred M. Kappes, and Peter W. Roesky. "Tetra- and hexanuclear string complexes of the coinage metals." Chemical Communications 57, no. 97 (2021): 13146–49. http://dx.doi.org/10.1039/d1cc06034a.

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10

Johnson, Alice, Isabel Marzo та M. Concepción Gimeno. "Heterobimetallic propargyl gold complexes with π-bound copper or silver with enhanced anticancer activity". Dalton Transactions 49, № 33 (2020): 11736–42. http://dx.doi.org/10.1039/d0dt02113j.

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Heterometallic propargyl gold species in which copper or silver is bound to the triple bond were prepared. The bimetallic complexes had improved activities compared to the mononuclear gold complexes, suggesting a possible synergy between the two metal centres within the cell.

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11

Prasad, Sahdeo, Dan DuBourdieu, Ajay Srivastava, Prafulla Kumar, and Rajiv Lall. "Metal–Curcumin Complexes in Therapeutics: An Approach to Enhance Pharmacological Effects of Curcumin." International Journal of Molecular Sciences 22, no. 13 (2021): 7094. http://dx.doi.org/10.3390/ijms22137094.

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Curcumin, an active component of the rhizome turmeric, has gained much attention as a plant-based compound with pleiotropic pharmacological properties. It possesses anti-inflammatory, antioxidant, hypoglycemic, antimicrobial, neuroprotective, and immunomodulatory activities. However, the health-promoting utility of curcumin is constrained due to its hydrophobic nature, water insolubility, poor bioavailability, rapid metabolism, and systemic elimination. Therefore, an innovative stride was taken, and complexes of metals with curcumin have been synthesized. Curcumin usually reacts with metals th

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12

Houbrechts, Stephan, Carlo Boutton, Koen Clays, et al. "Novel Organometallic Compounds for Nonlinear Optics." Journal of Nonlinear Optical Physics & Materials 07, no. 01 (1998): 113–20. http://dx.doi.org/10.1142/s0218863598000090.

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Hyper-Rayleigh scattering is used to investigate the nonlinear optical properties of novel metal (ruthenium, nickel and gold) σ-arylacetylide complexes. The influence of the organometallic donor group and conjugating bridge on the quadratic hyperpolarizability is studied. For all organic ligands, the addition of the metal (donor) group is shown to increase the static hyperpolarizability by a factor of 2, 4 and 7 for gold, nickel and ruthenium complexes, respectively. Moreover, replacement of phenyl with a heterocyclic ring is demonstrated to enlarge the hyperpolarizability in the case of gold

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13

Lima, João, and Laura Rodríguez. "Highlights on Gold TADF Complexes." Inorganics 7, no. 10 (2019): 124. http://dx.doi.org/10.3390/inorganics7100124.

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Thermally activated delayed fluorescence (TADF) and TADF-organic light-emitting diodes (OLEDs) systems are being given increasing attention in research nowadays. Much more work has been done for organic-based materials in this field, but the use of TADF organometallic systems has also emerged in recent years. In particular, TADF-based gold compounds have not been particularly well-explored, with a higher number of examples of Au(I)-molecules and fewer for the higher oxidation state Au(III) derivatives. Nevertheless, the novelty and observed results deserve attention. A careful analysis has bee

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14

Jahnke, Mareike C., and F. Ekkehardt Hahn. "Synthesis and coordination chemistry of silver(I), gold(I) and gold(III) complexes with picoline-functionalized benzimidazolin-2-ylidene ligands." Zeitschrift für Naturforschung B 76, no. 8 (2021): 463–73. http://dx.doi.org/10.1515/znb-2021-0087.

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Abstract The reactions of N-alkyl-N′-picolyl-benzimidazolium bromides or N,N′-dipicolyl-benzimidazolium bromide with silver oxide yielded the silver dicarbene complexes of the type [Ag(NHC)2][AgBr2] 1–4 (NHC = picoline-functionalized benzimidazolin-2-ylidene). The silver complexes 1–4 have been used in carbene transfer reactions to yield the gold(I) complexes of the type [AuCl(NHC)] 5–8 in good yields. A halide exchange at the metal center of complexes 5–8 with lithium bromide yielded the gold bromide complexes 9–12. Finally, the oxidation of the gold(I) centers in complexes 9–12 with elementa

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15

Foley, Janet B., Stanley E. Gay, Christopher Turmel, et al. "Electronic Structure of Dinuclear Gold(I) Complexes." Metal-Based Drugs 6, no. 4-5 (1999): 255–60. http://dx.doi.org/10.1155/mbd.1999.255.

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Cyclic voltammetry (CV) experiments on LL(AuSR∗)2 complexes [LL = diphenylphosphinomethane (dppm), diphenylphosphinopentane (dpppn); R* = p-SC6H4CH3] show anodic sweeps that broaden by about 25 mV on going from the longer (dpppn) to the shorter (dppm) bidentate phosphine ligand. Changing concentrations had no effect on the shape of the waveform. The result suggests a weak intramolecular metal-metal interaction in dppm(AuSR∗)2 that correlates well with rate acceleration occurring in the reaction of dppm(AuSR∗)2 with organic disulfides. Quantum yields for cis-dppee(AuX)2 [dppee = 1,2-bis(dipheny

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16

Hirschbiegel, Cristina-Maria, Stefano Fedeli, Xianzhi Zhang, et al. "Enhanced Design of Gold Catalysts for Bioorthogonal Polyzymes." Materials 15, no. 18 (2022): 6487. http://dx.doi.org/10.3390/ma15186487.

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Bioorthogonal chemistry introduces nonbiogenic reactions that can be performed in biological systems, allowing for the localized release of therapeutic agents. Bioorthogonal catalysts can amplify uncaging reactions for the in situ generation of therapeutics. Embedding these catalysts into a polymeric nanoscaffold can protect and modulate the catalytic activity, improving the performance of the resulting bioorthogonal “polyzymes”. Catalysts based on nontoxic metals such as gold(I) are particularly attractive for therapeutic applications. Herein, we optimized the structural components of a metal

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17

Mohamed, Ahmed A., Alfredo Burini, and John P. Fackler. "Mixed-Metal Triangular Trinuclear Complexes: Dimers of Gold−Silver Mixed-Metal Complexes from Gold(I) Carbeniates and Silver(I) 3,5-Diphenylpyrazolates." Journal of the American Chemical Society 127, no. 14 (2005): 5012–13. http://dx.doi.org/10.1021/ja0429869.

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18

Fackler, John P., Zerihun Assefa, Jennifer M. Forward, and Richard J. Staples. "Excited States of Gold(I) Compounds, Luminescence and Gold-Gold Bonding." Metal-Based Drugs 1, no. 5-6 (1994): 459–66. http://dx.doi.org/10.1155/mbd.1994.459.

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It has long been established by Khan that the superoxide anion, O2-, generates singlet oxygen, O21Δg, during dismutation. Auranofin, gold-phosphine thiols, β-Carotene, and metal-sulfur compounds can rapidly quench singlet O2. The quenching of the O21Δg, which exists at 7752 cm-1 above the ground state triplet, may be due to the direct interaction of the singlet O2 with gold(I) or may require special ligands such as those containing sulfur coordinated to the metal. Thus we have been examining the excited state behavior of gold(I) species and the mechanisms for luminescence. Luminescence is obse

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19

Machado, João Franco, João D. G. Correia, and Tânia S. Morais. "Emerging Molecular Receptors for the Specific-Target Delivery of Ruthenium and Gold Complexes into Cancer Cells." Molecules 26, no. 11 (2021): 3153. http://dx.doi.org/10.3390/molecules26113153.

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Cisplatin and derivatives are highly effective in the treatment of a wide range of cancer types; however, these metallodrugs display low selectivity, leading to severe side effects. Additionally, their administration often results in the development of chemoresistance, which ultimately results in therapeutic failure. This scenario triggered the study of other transition metals with innovative pharmacological profiles as alternatives to platinum, ruthenium- (e.g., KP1339 and NAMI-A) and gold-based (e.g., Auranofin) complexes being among the most advanced in terms of clinical evaluation. Concern

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20

Benazic, Sasa, Zana Besser Silconi, Jelena Milovanovic, et al. "Zinc and Gold Complexes in the Treatment of Breast Cancer / Kompleksi Cinka I Zlata U Lecenju Karcinoma Dojke." Serbian Journal of Experimental and Clinical Research 17, no. 1 (2016): 55–60. http://dx.doi.org/10.1515/sjecr-2015-0044.

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AbstractMetals are essential components in indispensable biochemical processes for living organisms. This review article highlights the metals zinc and gold in the development and treatment of breast cancer. Metal compounds off er many advantages as therapeutics due to their ability to coordinate ligands in a three-dimensional configuration. In aqueous solution, they form positively charged ions that can bind to negatively charged biological molecules. Metal complexes that contain metal ions such as zinc(II) and gold have received considerable attention as potential anticancer agents. Zinc is

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21

Zhang, Ming, Camille Saint-Germain, Guiling He, and Raymond Wai-Yin Sun. "Drug Delivery Systems For Anti-Cancer Active Complexes of Some Coinage Metals." Current Medicinal Chemistry 25, no. 4 (2018): 493–505. http://dx.doi.org/10.2174/0929867324666170511152441.

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Background: Although cisplatin and a number of platinum complexes have widely been used for the treatment of neoplasia, patients receiving these treatments have frequently suffered from their severe toxic side effects, the development of resistance with consequent relapse. In the recent decades, numerous complexes of coinage metals including that of gold, copper and silver have been reported to display promising in vitro and/or in vivo anti-cancer activities as well as potent activities towards cisplatin-resistant tumors. Nevertheless, the medical development of these metal complexes has been

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22

Canudo-Barreras, Guillermo, Lourdes Ortego, Anabel Izaga, Isabel Marzo, Raquel P. Herrera, and M. Concepción Gimeno. "Synthesis of New Thiourea-Metal Complexes with Promising Anticancer Properties." Molecules 26, no. 22 (2021): 6891. http://dx.doi.org/10.3390/molecules26226891.

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In this work, two thiourea ligands bearing a phosphine group in one arm and in the other a phenyl group (T2) or 3,5-di-CF3 substituted phenyl ring (T1) have been prepared and their coordination to Au and Ag has been studied. A different behavior is observed for gold complexes, a linear geometry with coordination only to the phosphorus atom or an equilibrium between the linear and three-coordinated species is present, whereas for silver complexes the coordination of the ligand as P^S chelate is found. The thiourea ligands and their complexes were explored against different cancer cell lines (He

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23

Yang, Yi, Visalakshi Ramamoorthy, and Paul R. Sharp. "Late transition metal oxo and imido complexes. 11. Gold(I) oxo complexes." Inorganic Chemistry 32, no. 10 (1993): 1946–50. http://dx.doi.org/10.1021/ic00062a012.

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24

Kiefer, Claude, Sebastian Bestgen, Michael T. Gamer, Sergei Lebedkin, Manfred M. Kappes, and Peter W. Roesky. "Correction: Alkynyl-functionalized gold NHC complexes and their coinage metal clusters." Dalton Transactions 45, no. 7 (2016): 3182. http://dx.doi.org/10.1039/c6dt90020h.

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25

Wilton-Ely, James D. E. T. "The surface functionalisation of gold nanoparticles with metal complexes." Dalton Trans., no. 1 (2008): 25–29. http://dx.doi.org/10.1039/b714144k.

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26

Pettibone, John M., and Jeffrey W. Hudgens. "Predictive Gold Nanocluster Formation Controlled by Metal-Ligand Complexes." Small 8, no. 5 (2012): 715–25. http://dx.doi.org/10.1002/smll.201101777.

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27

Chan, Kaai Tung, Glenna So Ming Tong, Wai-Pong To, et al. "The interplay between fluorescence and phosphorescence with luminescent gold(i) and gold(iii) complexes bearing heterocyclic arylacetylide ligands." Chemical Science 8, no. 3 (2017): 2352–64. http://dx.doi.org/10.1039/c6sc03775e.

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28

Eilrich, Volker Jens, Toni Grell, Peter Lönnecke, Chen Song, Jörg Matysik, and Evamarie Hey-Hawkins. "Gold(i) complexes of tetra-tert-butylcyclotetraphosphane." Dalton Transactions 51, no. 12 (2022): 4627–33. http://dx.doi.org/10.1039/d2dt00202g.

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1,2,3,4-Tetra-tert-butylcyclotetraphosphane can coordinate up to four {AuCl} fragments. The complexes with 1 to 3 {AuCl} fragments exhibit dynamic behaviour with redistribution of the metal complex fragments.

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Beillard, Audrey, Xavier Bantreil, Thomas-Xavier Métro, Jean Martinez, and Frédéric Lamaty. "Mechanochemistry for facilitated access to N,N-diaryl NHC metal complexes." New Journal of Chemistry 41, no. 3 (2017): 1057–63. http://dx.doi.org/10.1039/c6nj02895k.

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30

Armstrong, David, Fioralba Taullaj, Kamalpreet Singh, Bijan Mirabi, Alan J. Lough, and Ulrich Fekl. "Adamantyl metal complexes: new routes to adamantyl anions and new transmetallations." Dalton Transactions 46, no. 19 (2017): 6212–17. http://dx.doi.org/10.1039/c7dt00428a.

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31

PIANA, H., H. WAGNER, and U. SCHUBERT. "ChemInform Abstract: Transition-Metal Silyl Complexes. Part 36. Gold-Gold Interactions in Ph2P(CH2)1(2)PPh2-Bridged Dinuclear Gold Silyl Complexes." ChemInform 22, no. 14 (2010): no. http://dx.doi.org/10.1002/chin.199114243.

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32

Fernández, Eduardo J., Antonio Laguna, José M. López-de-Luzuriaga, Manuel Montiel, M. Elena Olmos, and Javier Pérez. "Dimethylsulfoxide gold–thallium complexes. Effects of the metal–metal interactions in the luminescence." Inorganica Chimica Acta 358, no. 14 (2005): 4293–300. http://dx.doi.org/10.1016/j.ica.2005.03.024.

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Teets, Thomas S., Daniel A. Lutterman, and Daniel G. Nocera. "Halogen Photoreductive Elimination from Metal−Metal Bonded Iridium(II)−Gold(II) Heterobimetallic Complexes." Inorganic Chemistry 49, no. 6 (2010): 3035–43. http://dx.doi.org/10.1021/ic902590u.

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Siemeling, Ulrich, Frauke Bretthauer, Clemens Bruhn, Tim-Patrick Fellinger, Wah-Leung Tong та Michael C. W. Chan. "Gold Nanoparticles Bearing an α-Lipoic Acid-based Ligand Shell: Synthesis, Model Complexes and Studies Concerning Phosphorescent Platinum(II)-Functionalisation". Zeitschrift für Naturforschung B 65, № 9 (2010): 1089–96. http://dx.doi.org/10.1515/znb-2010-0906.

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The surface functionalisation of gold nanoparticles (GNPs) with luminescent platinum complexes has been investigated, utilising α-lipoic acid derivatives for GNP stabilisation. Model complexes have been studied to mimic the chemisorption chemistry required to afford GNPs protected by an α-lipoic acid-based ligand shell with terminal functionalisation suitable for metal coordination, and the unambiguous binding of the cyclic disulfide moiety at a zero-valent precious metal core through oxidative addition has been confirmed by X-ray crystallography. Subsequently, gold nanoparticles bearing the α

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Nahra, Fady, Kristof Van Hecke, Alan R. Kennedy, and David J. Nelson. "Coinage metal complexes of selenoureas derived from N-heterocyclic carbenes." Dalton Transactions 47, no. 31 (2018): 10671–84. http://dx.doi.org/10.1039/c8dt01506f.

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Usui, Yoko, Masafumi Hirano, Atsushi Fukuoka, and Sanshiro Komiya. "Hydrogen Abstraction from Transition Metal Hydrides by Gold Alkoxides Giving Gold-Containing Heterodinuclear Complexes." Chemistry Letters 26, no. 10 (1997): 981–82. http://dx.doi.org/10.1246/cl.1997.981.

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Scrimin, Paolo, and Yanchao Lyu. "Phosphate Triesters Cleavage by Gold Nanozymes." Materials Proceedings 4, no. 1 (2020): 62. http://dx.doi.org/10.3390/iocn2020-07885.

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Phosphate triesters are cleaved by gold nanoparticles functionalized with metal complexes (Zn(II), Cu(II), Co(II), Co(III), Eu(III), Yt(III), Zr(IV)) of triazacyclonononane and cyclen ligands with a mononuclear mechanism with impressive rate accelerations with respect to the uncatalyzed processes, constituting a remarkable example of nerve agents hydrolyzing nanoazymes.

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Arefina, Irina A., Danil A. Kurshanov, Anna A. Vedernikova, et al. "Carbon Dot Emission Enhancement in Covalent Complexes with Plasmonic Metal Nanoparticles." Nanomaterials 13, no. 2 (2023): 223. http://dx.doi.org/10.3390/nano13020223.

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Carbon dots can be used for the fabrication of colloidal multi-purpose complexes for sensing and bio-visualization due to their easy and scalable synthesis, control of their spectral responses over a wide spectral range, and possibility of surface functionalization to meet the application task. Here, we developed a chemical protocol of colloidal complex formation via covalent bonding between carbon dots and plasmonic metal nanoparticles in order to influence and improve their fluorescence. We demonstrate how interactions between carbon dots and metal nanoparticles in the formed complexes, and

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Iacopetta, Domenico, Jessica Ceramella, Camillo Rosano, et al. "N-Heterocyclic Carbene-Gold(I) Complexes Targeting Actin Polymerization." Applied Sciences 11, no. 12 (2021): 5626. http://dx.doi.org/10.3390/app11125626.

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Transition metal complexes are attracting attention because of their various chemical and biological properties. In particular, the NHC-gold complexes represent a productive field of research in medicinal chemistry, mostly as anticancer tools, displaying a broad range of targets. In addition to the already known biological targets, recently, an important activity in the organization of the cell cytoskeleton was discovered. In this paper, we demonstrated that two NHC-gold complexes (namely AuL4 and AuL7) possessing good anticancer activity and multi-target properties, as stated in our previous

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40

Kiefer, Claude, Sebastian Bestgen, Michael T. Gamer, Sergei Lebedkin, Manfred M. Kappes, and Peter W. Roesky. "Alkynyl-functionalized gold NHC complexes and their coinage metal clusters." Dalton Transactions 44, no. 30 (2015): 13662–70. http://dx.doi.org/10.1039/c5dt02228b.

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Phenylpropynyl-functionalized N-heterocyclic carbenes as ligands for the synthesis of heterometallic hexanuclear coinagemetal clusters which exhibit mixed metallophillic interactions and intense white photoluminescence at low temperature.

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Kim, Sunghwan, Youngjin Jang, Ki Youl Yoon, and Jongnam Park. "Surface engineered gold nanoparticles through highly stable metal–surfactant complexes." Journal of Colloid and Interface Science 464 (February 2016): 110–16. http://dx.doi.org/10.1016/j.jcis.2015.10.034.

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Shu, Jiangnan, Wei Wang, and Hua Cui. "Direct electrochemiluminescence of gold nanoparticles bifunctionalized by luminol analogue–metal complexes in neutral and alkaline media." Chemical Communications 51, no. 57 (2015): 11366–69. http://dx.doi.org/10.1039/c5cc03104d.

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43

Yam, Vivian Wing-Wah. "Photofunctional organometallics—from fundamentals to design, assembly and functions." Pure and Applied Chemistry 85, no. 7 (2013): 1321–29. http://dx.doi.org/10.1351/pac-con-12-11-19.

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A number of soluble platinum(II) and gold(I) complexes have been designed and synthesized. Their luminescence and photophysical behavior have been studied. Their assembly properties, which were governed by the noncovalent metal–metal interactions, have also been investigated with the introduction of various external stimuli. The UV–vis and emission spectral changes of these complexes, which arose from the modulation of their assembly and disassembly behavior, have demonstrated the establishment of a convenient and sensitive detection strategy for various types of analytes. These studies sugges

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44

Shang, Rong, Souta Saito, J. Oscar C. Jimenez-Halla, and Yohsuke Yamamoto. "Facile reactions of gold(i) complexes with tri(tert-butyl)azadiboriridine." Dalton Transactions 47, no. 15 (2018): 5181–88. http://dx.doi.org/10.1039/c8dt00697k.

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Maliszewska, Hanna K., David L. Hughes, and María Paz Muñoz. "Allene-derived gold and platinum complexes: synthesis and first applications in catalysis." Dalton Transactions 49, no. 13 (2020): 4034–38. http://dx.doi.org/10.1039/d0dt00665c.

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de Mendoza, Paula, and Antonio M. Echavarren. "Synthesis of arenes and heteroarenes by hydroarylation reactions catalyzed by electrophilic metal complexes." Pure and Applied Chemistry 82, no. 4 (2010): 801–20. http://dx.doi.org/10.1351/pac-con-09-10-06.

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The hydroarylation of alkynes (also known as arylation of alkynes or alkenylation of arenes) catalyzed by gold or other electrophilic metal salts or complexes is reviewed from synthetic and mechanistic perspectives.

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Melot, Romain, and Véronique Michelet. "Coinage Metal-Catalyzed Asymmetric Reactions of ortho-Alkynylaryl and Heteroaryl Aldehydes and Ketones." Molecules 27, no. 20 (2022): 6970. http://dx.doi.org/10.3390/molecules27206970.

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Coinage metals have become the metal of choice due to their excellent catalytic activity in organic transformation processes. Combining various chiral ligands and coinage metals became a productive area of research and access to heterocyclic derivatives according to an efficient and sustainable manner. This review was devoted to the various recently developed coinage metal-catalyzed domino processes of ortho-alkynylaryl and heteroaryl aldehydes and ketones leading to functionalized heterocycles. Various gold chiral complexes were presented, and methods of preparations of chromenes along with i

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Bennett, Martin A., Nedaossadat Mirzadeh, Steven H. Privér, Jörg Wagler, and Suresh K. Bhargava. "Trinuclear Mixed-valent Gold Complexes Derived from 2-C6F4PPh2: Phosphine Oxide Complexes of Gold(III) and an ortho-Metallated Complex of Gold(I)." Zeitschrift für Naturforschung B 64, no. 11-12 (2009): 1463–68. http://dx.doi.org/10.1515/znb-2009-11-1229.

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Crystals of two mixed-valent gold complexes [(O2NO)AuI(μ-2-C6F4PPh2)AuIII{κ2-2-C6- F4P(O)Ph2}(μ-2-C6F4PPh2)AuI(ONO2)] (14) and [(O2NO)AuI(μ-2-C6F4PPh2)AuIII{κ3-2-C6F4- P(O)Ph(C6H4)}(μ-2-C6F4PPh2)AuI] (15) have been obtained from the reaction of the digold(I,III) complex [ClAuI(μ-2-C6F4PPh2)(κ2-2-C6F4PPh2)AuIIICl] (5) with, respectively, a small and a large excess of silver nitrate. Both complexes contain three, approximately collinear metal atoms, the central gold(III) atom being planar-coordinated by a chelate (O,C)-phosphine oxide formed by oxidation of 2-C6F4PPh2 and the carbon atoms of two

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Crochet, Pascale, and Victorio Cadierno. "Gold Complexes with Hydrophilic N-Heterocyclic Carbene Ligands and Their Contribution to Aqueous-Phase Catalysis." Catalysts 13, no. 2 (2023): 436. http://dx.doi.org/10.3390/catal13020436.

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N-Heterocyclic carbenes (NHCs) are nowadays one of the most widely employed ligands in organometallic chemistry and homogeneous catalysis due to the inherent stability of the metal-carbene bond and the ease of modification of the backbone as well as the N-wingtips substituents of these ligands. The functionalization of NHCs with hydrophilic groups offers the possibility of using NHC-metal complexes in aqueous catalysis, a hot topic within the Green Chemistry context due to the positive implications associated with the use of water as a reaction medium. In line with the enormous interest arouse

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Liang, Chang Jin, Jing Ying Li, and Chuan Jing Ma. "Review on Cyanogenic Bacteria for Gold Recovery from E-Waste." Advanced Materials Research 878 (January 2014): 355–67. http://dx.doi.org/10.4028/www.scientific.net/amr.878.355.

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Electronic waste (E-waste) is recognized as a new emerging and fast-growing waste stream, and may be considered as a secondary ore for the recovery of some precious metals (such as gold). A number of control technologies have been conducted for gold recovery, and in which, cyanidation is widely used. In recent years, an alternate approach to the gold cyanidation process is being considered, in which the aim is to replace with the microorganism, specifically cyanogenic bacteria such asChromobacterium violaceum,Pseudomonas fluorescens,Pseudomonas aeruginosaandEscherichia coli.All these species c

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