1
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Tofoni A, Busato M, Colella A, Melchior A, D'Angelo P. In-Depth XANES and EXAFS Characterization of the Ag + Ion Coordination in Dimethyl Sulfoxide Solution. J Phys Chem B 2024; 128:8065-8073. [PMID: 39134514 DOI: 10.1021/acs.jpcb.4c04001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
X-ray absorption near-edge structure (XANES) spectroscopy has been used, in conjunction with extended X-ray absorption fine structure (EXAFS), to determine the coordination structure of the Ag+ ion in a dimethyl sulfoxide (DMSO) solution. From the EXAFS data analysis, the Ag-O first shell distance in DMSO was found to be 2.31(3) Å, with 4.1(5) oxygen atoms surrounding the Ag+ ion, in fair agreement with previous results. This technique did not allow us to determine the geometry of the 4-fold coordination complex and a quantitative analysis of the XANES region was carried out to shed light on this issue. The XANES data analysis confirmed the presence of a four-coordinated complex, unambiguously showing that a regular tetrahedral [Ag(DMSO)4]+ complex is formed when silver triflate is dissolved in DMSO solution.
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Affiliation(s)
- Alessandro Tofoni
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, I-00185 Rome, Italy
| | - Matteo Busato
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, I-00185 Rome, Italy
| | - Andrea Colella
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, I-00185 Rome, Italy
| | - Andrea Melchior
- Dipartimento Politecnico di Ingegneria e Architettura, Università di Udine, via delle Scienze 206, 33100 Udine, Italy
| | - Paola D'Angelo
- Dipartimento di Chimica, Università degli Studi di Roma "La Sapienza", P.le A. Moro 5, I-00185 Rome, Italy
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2
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Vadakkedathu Palakkeezhillam VN, Haribabu J, Kumar VS, Manakkadan V, Rasin P, Muena JP, Dharmasivam M, Sreekanth A. Biomolecular Interactions and Anticancer Mechanisms of Ru(II)-Arene Complexes of Cinnamaldehyde-Derived Thiosemicarbazone Ligands: Analysis Combining In Silico and In Vitro Approaches. ACS APPLIED BIO MATERIALS 2024; 7:5622-5639. [PMID: 39087675 DOI: 10.1021/acsabm.4c00689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2024]
Abstract
Our study focuses on synthesizing and exploring the potential of three N-(4) substituted thiosemicarbazones derived from cinnamic aldehyde, alongside their Ru(II)-(η6 -p-cymene)/(η6-benzene) complexes. The synthesized compounds were comprehensively characterized using a range of analytical techniques, including FT-IR, UV-visible spectroscopy, NMR (1H, 13C), and HRMS. We investigated their electronic and physicochemical properties via density functional theory (DFT). X-ray crystal structures validated structural differences identified by DFT. Molecular docking predicted promising bioactivities, supported by experimental observations. Notably, docking with EGFR suggested an inhibitory potential against this cancer-related protein. Spectroscopic titrations revealed significant DNA/BSA binding affinities, particularly with DNA intercalation and BSA hydrophobic interactions. RuPCAM displayed the strongest binding affinity with DNA (Kb = 6.23 × 107 M-1) and BSA (Kb = 9.75 × 105 M-1). Assessed the cytotoxicity of the complexes on cervical cancer cells (HeLa), and breast cancer cells (MCF-7 and MDA-MB 231), revealing remarkable potency. Additionally, selectivity was assessed by examining MCF-10a normal cell lines. The active complexes were found to trigger apoptosis, a vital cellular process crucial for evaluating their potential as anticancer agents utilizing staining assays and flow cytometry analysis. Intriguingly, complexation with Ru(II)-arene precursors significantly amplified the bioactivity of thiosemicarbazones, unveiling promising avenues toward the creation of powerful anticancer agents.
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Affiliation(s)
| | - Jebiti Haribabu
- Facultad de Medicina, Universidad de Atacama, Los Carreras 1579, Copiapo 1532502, Chile
| | - Vaishnu Suresh Kumar
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India-620015
| | - Vipin Manakkadan
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India-620015
| | - Puthiyavalappil Rasin
- Centre for Nonlinear Systems, Chennai Institute of Technology (CIT), Chennai 600069, India
| | - Juan Pablo Muena
- Departmento de Quimica y Biologia, Facultad de Ciencias Naturales, Universidad de Atacama, Av. Copiapo 485, Copiapo 1530000, Chile
| | - Mahendiran Dharmasivam
- Department of Chemistry, Griffith Institute for Drug Discovery, Griffith University, Brisbane, Queensland 4222, Australia
| | - Anandaram Sreekanth
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tamil Nadu, India-620015
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3
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Nguyen LH, Tran DP, Truong TN. Computational Study on the Nature of Bonding between Silver Ions and Nitrogen Ligands. ACS OMEGA 2022; 7:45231-45238. [PMID: 36530335 PMCID: PMC9753169 DOI: 10.1021/acsomega.2c05707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 10/20/2022] [Indexed: 06/17/2023]
Abstract
In this paper, the nature of silver ion-nitrogen atom bonding in the complexation with ammonia, azomethine, pyridine, and hydrogen cyanide from one to four coordinations is studied at the B97-1 level of density functional theory. The results indicate that the two-coordinated complex of the silver ion with different nitrogen ligands representing sp, sp2, and sp3 orbital hybridizations is the most stable form having the shortest Ag+-N bond distance, highest vibrational frequencies, largest bond order, and favorable Gibbs free energy of formation. Natural bond orbital analyses further show that σ-donation from the nitrogen lone pair to the silver empty 5s orbital is dominant in the dative metal-ligand bonding character with N-sp3 having the largest contribution among the different N atomic orbital hybridizations. Natural energy decomposition analyses further show that the two-coordinated complexes have enhanced electrostatic interaction and charge transfer energies over other coordination types leading them to be more stable. For this reason, the two-coordinated complexes would be a better representation for studying bonding and interaction in silver ion complexes.
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Affiliation(s)
- Lam H. Nguyen
- Institute
for Computational Science and Technology, Ho Chi Minh City700000, Vietnam
- Faculty
of Chemistry, University of Science, Ho Chi Minh City700000, Vietnam
- Vietnam
National University, Ho Chi Minh
City 7000000, Vietnam
| | - Dung P. Tran
- Faculty
of Chemistry, Ho Chi Minh City University
of Education, 280 An Duong Vuong Street, District 5, Ho
Chi Minh City7000000, Vietnam
| | - Thanh N. Truong
- Department
of Chemistry, University of Utah, Salt Lake City, Utah84112, United States
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4
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Guo M, Huang B, Yi Q, Luo Z. Gas-phase synthesis and deposition of metal-bipyridine complex [M-bpy 1-2] + (M = Ag, Cu). Phys Chem Chem Phys 2021; 23:16334-16340. [PMID: 34313273 DOI: 10.1039/d1cp02399c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Controllable synthesis of organometallic clusters in the gas phase is a topic of reasonable interest with precisely tunable properties depending on sizes, compositions, and intra-cluster charge-transfer interactions. Here, we have prepared small Agn+ and Cun+ clusters by using a customized magnetron sputtering (MagS) source and observed the gas-phase reactions with 2,2'-bipyridine. It is found that the small silver and copper clusters readily react with bipyridine and form products of [M-bpy1-2]+ (M = Ag, Cu). Quantum chemistry calculations reveal that the bipyridine in both [Ag-bpy1-2]+ and [Cu-bpy1-2]+ takes on cis-conformation with altered N-C-C-N dihedral angles, which is in contrast to the trans-conformation of a free 2,2'-bipyridine molecule itself. In order to unveil the principle of conformational transition, we have fully studied the interactions between the nitrogen atoms of bipyridine and the cationic Ag+ and Cu+, calculated the donor-acceptor orbital overlaps, and analyzed the correlation of their frontier molecular orbital energy levels. Furthermore, by using a soft-landing strategy, we have managed to deposit the [Cu-bpy2]+ complex onto the glass substrates coated with Ag nanoparticles, and recorded the surface-enhanced Raman scattering spectra.
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Affiliation(s)
- Mengdi Guo
- Beijing National Laboratory for Molecular Sciences (BNLMS), State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
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5
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Fulong CRP, Kim S, Friedman AE, Cook TR. Coordination-Driven Self-Assembly of Silver(I) and Gold(I) Rings: Synthesis, Characterization, and Photophysical Studies. Front Chem 2019; 7:567. [PMID: 31475134 PMCID: PMC6705220 DOI: 10.3389/fchem.2019.00567] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 07/26/2019] [Indexed: 11/13/2022] Open
Abstract
In this work, we investigate the self-assembly between Ag(I) and Au(I) centers and pyridyl donors to form hexagonal metallacycles and related linear complexes. The precipitation of hexagonal metallacycles upon assembly in chloroform/methanol mixtures results in high solid-state photo-stability. Whereas, the Ag(I) species have fast kinetics and high formation constants in acetone, this solvent interferes in the formation of the analogous Au(I) complexes. The photophysical properties of this suite of metallacycles was investigated including steady-state absorption, emission, and time-resolved lifetime measurements. All ligands and hexagons exhibited ligand-centered singlet emissions with ground-state absorption and emission perturbed upon coordination. The ligand-based fluorescent photoluminescence was affected by the heavy-atom effect when halide or metals are present, attenuating quantum yields as evidenced by increases in the experimentally measured non-radiative rate constants. The formation of group 11 metallacycles is motivated by their potential applications in mixed-matrix materials wherein metal ions can interact with substrate to facilitate separations chemistry with reduced energy requirements, in particular the isolation of ethylene and light olefins. Existing processes involve cryogenic distillation, an energy intensive and inefficient method.
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Affiliation(s)
- Cressa Ria P Fulong
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, United States
| | - Sewon Kim
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, United States
| | - Alan E Friedman
- Department of Materials Design and Innovation, University at Buffalo, The State University of New York, Buffalo, NY, United States
| | - Timothy R Cook
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, United States
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6
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Thermodynamics of complex formation in dimethylsulfoxide: The case of Co(II) complexes with nitrogen donor ligands and their O2 adducts. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2019.04.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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7
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Kershaw Cook LJ, Ramsay ML. Ditopic bis-heteroazolylpyridines for construction of fluorescent silver(I) bridged metalloligands. INORG CHEM COMMUN 2019. [DOI: 10.1016/j.inoche.2019.04.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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8
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Torrejos REC, Nisola GM, Min SH, Han JW, Koo S, Parohinog KJ, Lee S, Kim H, Chung WJ. Aqueous Synthesis of 14-15-Membered Crown Ethers with Mixed O, N and S Heteroatoms: Experimental and Theoretical Binding Studies with Platinum-Group Metals. Chempluschem 2019; 84:210-221. [DOI: 10.1002/cplu.201800541] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2018] [Revised: 01/22/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Rey Eliseo C. Torrejos
- Energy and Environment Fusion Technology Center (E FTC) Department of Energy Science and Technology (DEST); Myongji University Yongin Science Campus; 17058 South Korea
| | - Grace M. Nisola
- Energy and Environment Fusion Technology Center (E FTC) Department of Energy Science and Technology (DEST); Myongji University Yongin Science Campus; 17058 South Korea
| | - Sang Hoon Min
- Department of Chemical Engineering; University of Seoul; Seoul 02504 South Korea
| | - Jeong Woo Han
- Department of Chemical Engineering; Pohang University of Science and Technology (POSTECH); Pohang 37673 South Korea
| | - Sangho Koo
- Energy and Environment Fusion Technology Center (E FTC) Department of Energy Science and Technology (DEST); Myongji University Yongin Science Campus; 17058 South Korea
- Department of Chemistry; Myongji University; Yongin Science Campus 17058 South Korea
| | - Khino J. Parohinog
- Energy and Environment Fusion Technology Center (E FTC) Department of Energy Science and Technology (DEST); Myongji University Yongin Science Campus; 17058 South Korea
| | - Seongpoong Lee
- Energy and Environment Fusion Technology Center (E FTC) Department of Energy Science and Technology (DEST); Myongji University Yongin Science Campus; 17058 South Korea
| | - Hern Kim
- Energy and Environment Fusion Technology Center (E FTC) Department of Energy Science and Technology (DEST); Myongji University Yongin Science Campus; 17058 South Korea
| | - Wook-Jin Chung
- Energy and Environment Fusion Technology Center (E FTC) Department of Energy Science and Technology (DEST); Myongji University Yongin Science Campus; 17058 South Korea
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9
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Busato M, D’Angelo P, Melchior A. Solvation of Zn2+ ion in 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquids: a molecular dynamics and X-ray absorption study. Phys Chem Chem Phys 2019; 21:6958-6969. [PMID: 30869085 DOI: 10.1039/c8cp07773h] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular dynamics simulations and X-ray absorption spectroscopy were employed to study Zn2+ ions in [Cnmim][Tf2N] (n = 2, 4).
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Affiliation(s)
- Matteo Busato
- DPIA
- Laboratorio di Scienze e Tecnologie Chimiche
- Università di Udine
- 33100 Udine
- Italy
| | - Paola D’Angelo
- Dipartimento di Chimica
- Università di Roma “La Sapienza”
- 00185 Roma
- Italy
| | - Andrea Melchior
- DPIA
- Laboratorio di Scienze e Tecnologie Chimiche
- Università di Udine
- 33100 Udine
- Italy
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10
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Wang HY, Kong L, Zhu SJ, Zhou HP, Yang JX. Understanding the molecular orientation growth on a nanometer scale and adjustable electron transition performance of a terpyridyl derivative under different external environments. CrystEngComm 2019. [DOI: 10.1039/c8ce01940a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
TD-DFT calculation is used to forecast the aggregation style of PYTPY under different external conditions and predict the related morphology and electron transition performance.
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Affiliation(s)
- Hai-Yan Wang
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P. R. China
| | - Lin Kong
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P. R. China
| | - Shu-Juan Zhu
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P. R. China
| | - Hong-Ping Zhou
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P. R. China
| | - Jia-Xiang Yang
- Department of Chemistry
- Key Laboratory of Functional Inorganic Materials of Anhui Province
- Anhui University
- Hefei 230039
- P. R. China
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11
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Liang HW, Yang Z, Jiang K, Ye Y, Wei Y. Atom-Economic Silver-Catalyzed Difunctionalization of the Isocyano Group with Cyclic Oximes: Towards Pyrimidinediones. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801363] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Hong-Wen Liang
- College of Pharmacy; Third Military Medical University; Chongqing 400038 China
| | - Zhen Yang
- College of Pharmacy; Third Military Medical University; Chongqing 400038 China
| | - Kun Jiang
- College of Pharmacy; Third Military Medical University; Chongqing 400038 China
| | - Ying Ye
- College of Pharmacy; Third Military Medical University; Chongqing 400038 China
| | - Ye Wei
- College of Pharmacy; Third Military Medical University; Chongqing 400038 China
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12
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Liang HW, Yang Z, Jiang K, Ye Y, Wei Y. Atom-Economic Silver-Catalyzed Difunctionalization of the Isocyano Group with Cyclic Oximes: Towards Pyrimidinediones. Angew Chem Int Ed Engl 2018; 57:5720-5724. [PMID: 29601660 DOI: 10.1002/anie.201801363] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/12/2018] [Indexed: 11/06/2022]
Abstract
An unprecedented silver-catalyzed difunctionalization of the isocyano group with cyclic oximes is described. This method allows efficient and atom-economic assembly of a vast array of structurally novel and interesting pyrimidinediones, and tolerates a range of functionalities. The resulting products can be easily converted into some useful compounds. Furthermore, the method can also be applied for the late-stage modification of a few biologically active molecules.
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Affiliation(s)
- Hong-Wen Liang
- College of Pharmacy, Third Military Medical University, Chongqing, 400038, China
| | - Zhen Yang
- College of Pharmacy, Third Military Medical University, Chongqing, 400038, China
| | - Kun Jiang
- College of Pharmacy, Third Military Medical University, Chongqing, 400038, China
| | - Ying Ye
- College of Pharmacy, Third Military Medical University, Chongqing, 400038, China
| | - Ye Wei
- College of Pharmacy, Third Military Medical University, Chongqing, 400038, China
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13
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Endrizzi F, Di Bernardo P, Zanonato PL, Tisato F, Porchia M, Ahmed Isse A, Melchior A, Tolazzi M. Cu(i) and Ag(i) complex formation with the hydrophilic phosphine 1,3,5-triaza-7-phosphadamantane in different ionic media. How to estimate the effect of a complexing medium. Dalton Trans 2018; 46:1455-1466. [PMID: 28074209 DOI: 10.1039/c6dt04221j] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The complexes of Cu(i) and Ag(i) with 1,3,5-triaza-7-phosphadamantane (PTA) are currently studied for their potential clinical use as anticancer agents, given the cytotoxicity they exhibited in vitro towards a panel of several human tumor cell lines. These metallodrugs are prepared in the form of [M(PTA)4]+ (M = Cu+, Ag+) compounds and dissolved in physiological solution for their administration. However, the nature of the species involved in the cytotoxic activity of the compounds is often unknown. In the present work, the thermodynamics of formation of the complexes of Cu(i) and Ag(i) with PTA in aqueous solution is investigated by means of potentiometric, spectrophotometric and microcalorimetric methods. The results show that both metal(i) ions form up to four successive complexes with PTA. The formation of Ag(i) complexes is studied at 298.15 K in 0.1 M NaNO3 whereas the formation of the Cu(i) one is studied in 1 M NaCl, where Cu(i) is stabilized by the formation of three successive chloro-complexes. Therefore, for this latter system, conditional stability constants and thermodynamic data are obtained. To estimate the affinity of Cu(i) for PTA in the absence of chloride, Density Functional Theory (DFT) calculations have been done to obtain the stoichiometry and the relative stability of the possible Cu/PTA/Cl species. Results indicate that one chloride ion is involved in the formation of the first two complexes of Cu(i) ([CuCl(PTA)] and [CuCl(PTA)2]) whereas it is absent in the successive ones ([Cu(PTA)3]+ and [Cu(PTA)4]+). The combination of DFT results and thermodynamic experimental data has been used to estimate the stability constants of the four [Cu(PTA)n]+ (n = 1-4) complexes in an ideal non-complexing medium. The calculated stability constants are higher than the corresponding conditional values and show that PTA prefers Cu(i) to the Ag(i) ion. The approach used here to estimate the hidden role of chloride on the conditional stability constants of Cu(i) complexes may be applied to any Cu(i)/ligand system, provided that the stoichiometry of the species in NaCl solution is known. The speciation for the two systems shows that the [M(PTA)4]+ (M = Cu+, Ag+) complexes present in the metallodrugs are dissociated into lower stoichiometry species when diluted to the micromolar concentration range, typical of the in vitro biological testing. Accordingly, [Cu(PTA)2]+, [Cu(PTA)3]+ and [Ag(PTA)2]+ are predicted to be the species actually involved in the cytotoxic activity of these compounds.
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Affiliation(s)
- Francesco Endrizzi
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy. and Institute for Nuclear Waste Disposal, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Plinio Di Bernardo
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy.
| | - Pier Luigi Zanonato
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy.
| | | | | | - Abdirisak Ahmed Isse
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, Italy.
| | - Andrea Melchior
- Dipartimento Politecnico di Ingegneria e Architettura, Università di Udine, Laboratori di Scienze e Tecnologie Chimiche, via Cotonificio 108, 33100 Udine, Italy
| | - Marilena Tolazzi
- Dipartimento Politecnico di Ingegneria e Architettura, Università di Udine, Laboratori di Scienze e Tecnologie Chimiche, via Cotonificio 108, 33100 Udine, Italy
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14
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Dau PV, Zhang Z, Gao Y, Parker BF, Dau PD, Gibson JK, Arnold J, Tolazzi M, Melchior A, Rao L. Thermodynamic, Structural, and Computational Investigation on the Complexation between UO22+ and Amine-Functionalized Diacetamide Ligands in Aqueous Solution. Inorg Chem 2018; 57:2122-2131. [DOI: 10.1021/acs.inorgchem.7b02971] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Phuong V. Dau
- Chemical Science
Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - Zhicheng Zhang
- Chemical Science
Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - Yang Gao
- Chemical Science
Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
- College
of Nuclear Science and Technology, Harbin Engineering University, Harbin 150001, China
| | - Bernard F. Parker
- Chemical Science
Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
- Department
of Chemistry, University of California—Berkeley, Berkeley, California 94720, United States
| | - Phuong D. Dau
- Chemical Science
Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - John K. Gibson
- Chemical Science
Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
| | - John Arnold
- Chemical Science
Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
- Department
of Chemistry, University of California—Berkeley, Berkeley, California 94720, United States
| | - Marilena Tolazzi
- Laboratori di Chimica, Università di Udine, via delle Scienze
99, 33100 Udine, Italy
| | - Andrea Melchior
- Laboratori di Chimica, Università di Udine, via delle Scienze
99, 33100 Udine, Italy
| | - Linfeng Rao
- Chemical Science
Division, Lawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, California 94720, United States
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15
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Marchal W, Vandevenne G, D'Haen J, Calmont de Andrade Almeida A, Durand Sola MA, van den Ham EJ, Drijkoningen J, Elen K, Deferme W, Van Bael MK, Hardy A. Ultrasonically spray coated silver layers from designed precursor inks for flexible electronics. NANOTECHNOLOGY 2017; 28:215202. [PMID: 28471754 DOI: 10.1088/1361-6528/aa6d3a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Integration of electronic circuit components onto flexible materials such as plastic foils, paper and textiles is a key challenge for the development of future smart applications. Therefore, conductive metal features need to be deposited on temperature sensitive substrates in a fast and straightforward way. The feasibility of these emerging (nano-) electronic technologies depends on the availability of well-designed deposition techniques and on novel functional metal inks. As ultrasonic spray coating (USSC) is one of the most promising techniques to meet the above requirements, innovative metal organic decomposition (MOD) inks are designed to deposit silver features on plastic foils. Various amine ligands were screened and their influence on the ink stability and the characteristics of the resulting metal depositions were evaluated to determine the optimal formulation. Eventually, silver layers with excellent performance in terms of conductivity (15% bulk silver conductivity), stability, morphology and adhesion could be obtained, while operating in a very low temperature window of 70 °C-120 °C. Moreover, the optimal deposition conditions were determined via an in-depth analysis of the ultrasonically sprayed silver layers. Applying these tailored MOD inks, the USSC technique enabled smooth, semi-transparent silver layers with a tunable thickness on large areas without time-consuming additional sintering steps after deposition. Therefore, this novel combination of nanoparticle-free Ag-inks and the USSC process holds promise for high throughput deposition of highly conductive silver features on heat sensitive substrates and even 3D objects.
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Affiliation(s)
- W Marchal
- UHasselt, Hasselt University, Institute for Materials Research(IMO-IMOMEC), Inorganic and Physical Chemistry, Agoralaan, B-3590 Diepenbeek, Belgium. IMEC vzw, division IMOMEC, Agoralaan, B-3590 Diepenbeek, Belgium
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16
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Yuan R, Wei B, Fu G. How the Coordinated Structures of Ag(I) Catalysts Affect the Outcomes of Carbon Dioxide Incorporation into Propargylic Amine: A DFT Study. J Org Chem 2017; 82:3639-3647. [PMID: 28225622 DOI: 10.1021/acs.joc.7b00167] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Density functional theory calculations have been carried out to explore the detailed mechanisms for carbon dioxide incorporation of N-unsubstituted propargylic amine catalyzed by Ag(I) catalysts. We show that the reaction undergoes substrate adsorption or displacement, isomerization from amine-coordinated species to the alkyne-coordinated species, CO2 attack, and proton transfer, giving the carbamate intermediate. Subsequently, the reaction would bifurcate at the intermolecular ring-closing step, which produces five-membered ring (5MR) and six-membered ring (6MR) products at the same time, thus raising a regioselectivity issue. Our calculations reveal that the outcomes of the reaction critically depend on the coordination number and the basicity of the ligands. Higher coordinate number and stronger basicity of the ligands would stabilize the 5MR transition state over the 6MR counterpart. Such a preference can be rationalized by using transition state energy decomposition. All of these results could promote the rational design of noble metal/organic base combined catalysts with higher selectivity.
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Affiliation(s)
- Ruming Yuan
- College of Chemistry and Chemical Engineering, Department of Chemistry, Xiamen University , Xiamen 361005, People's Republic of China
| | - Baohuan Wei
- College of Chemistry and Chemical Engineering, Department of Chemistry, Xiamen University , Xiamen 361005, People's Republic of China
| | - Gang Fu
- College of Chemistry and Chemical Engineering, Department of Chemistry, Xiamen University , Xiamen 361005, People's Republic of China
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17
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Dell'Anna MM, Censi V, Carrozzini B, Caliandro R, Denora N, Franco M, Veclani D, Melchior A, Tolazzi M, Mastrorilli P. Triphenylphosphane Pt(II) complexes containing biologically active natural polyphenols: Synthesis, crystal structure, molecular modeling and cytotoxic studies. J Inorg Biochem 2016; 163:346-361. [DOI: 10.1016/j.jinorgbio.2016.08.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 07/25/2016] [Accepted: 08/09/2016] [Indexed: 10/21/2022]
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18
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Yeh CW, Tsou CH, Lee HT, Tsai HA, Suen MC. Silver(I) coordination polymers generated from asymmetrical Schiff-base ligands containing triazolyl and pyridyl rings. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.11.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Structural diversity in the self-assembly of silver(I) complexes containing 2,6-dimethyl-3,5-dicyano-4-(4-quinolinyl)-1,4-dihydropyridine. Inorganica Chim Acta 2015. [DOI: 10.1016/j.ica.2014.10.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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20
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Endrizzi F, Melchior A, Tolazzi M, Rao L. Complexation of uranium(vi) with glutarimidoxioxime: thermodynamic and computational studies. Dalton Trans 2015; 44:13835-44. [DOI: 10.1039/c5dt00261c] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Glutarimidoxioxime forms a bidentate complex with UO22+via the oxime and imino groups. Hydrogen bonding between water and the carbonyl group helps to stabilize the complex. The complex is much weaker than that of glutarimidedioxime previously studied.
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Affiliation(s)
- Francesco Endrizzi
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
| | - Andrea Melchior
- Dipartimento Chimica Fisica e Ambiente
- Università di Udine
- 33100 Udine
- Italy
| | - Marilena Tolazzi
- Dipartimento Chimica Fisica e Ambiente
- Università di Udine
- 33100 Udine
- Italy
| | - Linfeng Rao
- Chemical Sciences Division
- Lawrence Berkeley National Laboratory
- Berkeley
- USA
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21
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Yeh CW, Tsou CH, Huang FC, Jong A, Suen MC. Structural diversity in the self-assembly of Ag(I) complexes containing dicyano and quinolinyl ligands. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.06.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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22
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Melchior A, Peralta E, Valiente M, Tolazzi M. Solvent effect on heavy metal coordination with thioether ligands: A thermodynamic and theoretical study. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.03.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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23
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Wang PN, Yeh CW, Tsou CH, Ho YW, Lin SC, Suen MC. Structural diversity in the self-assembly of Ag(i) complexes containing 2,6-dimethyl-3,5-dicyano-4-(3-pyridyl)-1,4-dihydropyridine. NEW J CHEM 2014. [DOI: 10.1039/c3nj01322g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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24
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Zhang ZY, Deng ZP, Huo LH, Zhao H, Gao S. Anion-assisted silver(I) coordination complexes from flexible unsymmetrical bis(pyridyl) ligands: Syntheses, structures and luminescent properties. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.04.041] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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25
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Zhang ZY, Deng ZP, Huo LH, Zhao H, Gao S. Well-designed strategy to construct helical silver(I) coordination polymers from flexible unsymmetrical bis(pyridyl) ligands: syntheses, structures, and properties. Inorg Chem 2013; 52:5914-23. [PMID: 23634904 DOI: 10.1021/ic400055t] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
In this Article, self-assembly of AgX (X = NO3(-) and ClO4(-)) salts and four flexible unsymmetrical bis(pyridyl) ligands, namely, N-(pyridin-2-ylmethyl)pyridin-3-amine (L1), N-(pyridin-3-ylmethyl)pyridin-2-amine (L2), N-(pyridin-4-ylmethyl)pyridin-2-amine (L3), and N-(pyridin-4-ylmethyl)pyridin-3-amine (L4), results in the formation of eight helical silver(I) coordination polymers, [Ag(L)(NO3)]n [L = L1 (1), L2 (2), L3 (3), L4 (4)] and [Ag(L)(ClO4)]n [L = L1 (5), L2 (6), L3 (7), L4 (8)], which have been characterized by elemental analysis, IR, TG, PL, and powder and single-crystal X-ray diffraction. The alternating one-dimensional (1-D) left- and right-handed helical chains are included in achiral complexes 1-3 and 5-8. By contrast, the ligand L4 only alternately bridges Ag(I) cation to form the 1-D right-handed helical chain in complex 4. The pitches of these helical chains locate in the range 5.694(5)-17.016(6) Å. Meanwhile, the present four unsymmetrical bis(pyridyl) ligands in the eight complexes present diverse cis-trans and trans-trans conformation and facilitate the construction of helical structures. Moreover, the solid-state luminescent emission intensities of the perchlorate-containing complexes are stronger than those of nitrate-containing complexes at room temperature.
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Affiliation(s)
- Zhu-Yan Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, Harbin 150080, People's Republic of China
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26
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Melchior A, Peralta E, Valiente M, Tavagnacco C, Endrizzi F, Tolazzi M. Interaction of d10 metal ions with thioether ligands: a thermodynamic and theoretical study. Dalton Trans 2013; 42:6074-82. [DOI: 10.1039/c3dt32332c] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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27
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Yeh CW, Chang WJ, Suen MC, Jou CH, Wang JC. Silver(i) supramolecular complexes generated from polydentate ligands containing cyano and pyridyl groups. NEW J CHEM 2012. [DOI: 10.1039/c2nj40399d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Tsai HA, Suen MC, Wang PN, Hsu YF, Wang JC. Synthesis and crystal structure of 2-D silver coordination polymers containing aminopyrazine. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.605123] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Hui-An Tsai
- a Department of Material and Fiber , Graduate School of Materials Applied Technology, Nanya Institute of Technology , Jhongli, Taiwan, ROC
- d R&D Center for Membrane Technology, Chung-Yuan Christian University , Jhongli, Taiwan, ROC
| | - Maw-Cherng Suen
- a Department of Material and Fiber , Graduate School of Materials Applied Technology, Nanya Institute of Technology , Jhongli, Taiwan, ROC
| | - Pin-Ning Wang
- a Department of Material and Fiber , Graduate School of Materials Applied Technology, Nanya Institute of Technology , Jhongli, Taiwan, ROC
| | - Yi-Fen Hsu
- b Department of Chemistry , Chung-Yuan University , Jhongli, Taiwan, ROC
| | - Ju-Chun Wang
- c Department of Chemistry , Soochow University , Taipei, Taiwan, ROC
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29
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Chakraborty S, Dopfer O. Infrared spectrum of the Ag(+)-(pyridine)2 ionic complex: probing interactions in artificial metal-mediated base pairing. Chemphyschem 2011; 12:1999-2008. [PMID: 21442717 DOI: 10.1002/cphc.201001052] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Indexed: 11/11/2022]
Abstract
The isolated pyridine-Ag(+)-pyridine unit (Py-Ag(+)-Py) is employed as a model system to characterize the recently observed Ag(+)-mediated base pairing in DNA oligonucleotides at the molecular level. The structure and infrared (IR) spectrum of the Ag(+)-Py(2) cationic complex are investigated in the gas phase by IR multiple-photon dissociation (IRMPD) spectroscopy and quantum chemical calculations to determine the preferred metal-ion binding site and other salient properties of the potential-energy surface. The IRMPD spectrum has been obtained in the 840-1720 cm(-1) fingerprint region by coupling the IR free electron laser at the Centre Laser Infrarouge d'Orsay (CLIO) with a Fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometer equipped with an electrospray ionization source. The spectroscopic results are interpreted with quantum chemical calculations conducted at the B3LYP/aug-cc-pVDZ level. The analysis of the IRMPD spectrum is consistent with a σ complex, in which the Ag(+) ion binds to the nitrogen lone pairs of the two Py ligands in a linear configuration. The binding motif of Py-Ag(+)-Py in the gas phase is the same as that observed in Ag(+)-mediated base pairing in solution. Ag(+) bonding to the π-electron system of the aromatic ring is predicted to be a substantially less-favorable binding motif.
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Affiliation(s)
- Shamik Chakraborty
- Institut für Optik und Atomare Physik, Technische Universität Berlin, Hardenbergstr. 36, 10623 Berlin, Germany
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30
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Parker E, Leconte N, Godet T, Belmont P. Silver-catalyzed furoquinolines synthesis: from nitrogen effects to the use of silver imidazolatepolymer as a new and robust silver catalyst. Chem Commun (Camb) 2011; 47:343-5. [DOI: 10.1039/c0cc02623a] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Complexation of silver(I) cation by a series of heterosubstituted dipyridyl ligands. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.07.078] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Davidson G, Sharma S, Loeb S. A [2]Rotaxane Flip Switch Driven by Coordination Geometry. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001486] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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33
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Davidson G, Sharma S, Loeb S. A [2]Rotaxane Flip Switch Driven by Coordination Geometry. Angew Chem Int Ed Engl 2010; 49:4938-42. [DOI: 10.1002/anie.201001486] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Different coordination modes of the thiosaccharinate anion in dinuclear and one dimensional polymeric silver–azine complexes. Polyhedron 2010. [DOI: 10.1016/j.poly.2009.12.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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35
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Understanding the enthalpic and entropic contributions to solvent effects on osmium tetroxide complexation with pyridine. Polyhedron 2010. [DOI: 10.1016/j.poly.2009.05.069] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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36
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Gardlik M, Yan Z, Xia S, Rieth S, Gallucci J, Hadad CM, Badjić JD. A close inspection of Ag(I) coordination to molecular baskets. A study of solvation and guest encapsulation in solution and the solid state. Tetrahedron 2009. [DOI: 10.1016/j.tet.2008.11.098] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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37
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Suen MC, Yeh CW, Ho YW, Wang JC. Self-assembly of two-dimensional coordination polymers from AgX (X = BF4−, ClO4−, NO3− and PF6−) and 2,6-dimethyl-3,5-dicyano-4-(6-methyl-2-pyridyl)-1,4-dihydropyridine. NEW J CHEM 2009. [DOI: 10.1039/b902977j] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Di Bernardo P, Melchior A, Portanova R, Tolazzi M, Zanonato P. Complex formation of N-donor ligands with group 11 monovalent ions. Coord Chem Rev 2008. [DOI: 10.1016/j.ccr.2007.12.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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39
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Di Bernardo P, Zanonato PL, Melchior A, Portanova R, Tolazzi M, Choppin GR, Wang Z. Thermodynamic and Spectroscopic Studies of Lanthanides(III) Complexation with Polyamines in Dimethyl Sulfoxide. Inorg Chem 2008; 47:1155-64. [DOI: 10.1021/ic701337u] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- P. Di Bernardo
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, ITALY, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via del Cotonificio 108, 33100 Udine, ITALY, Department of Chemistry, The Florida State University, Tallahassee, Florida 32306-3006, and Pacific Northwest National Laboratory, Richland, Washington 99352
| | - P. L. Zanonato
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, ITALY, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via del Cotonificio 108, 33100 Udine, ITALY, Department of Chemistry, The Florida State University, Tallahassee, Florida 32306-3006, and Pacific Northwest National Laboratory, Richland, Washington 99352
| | - A. Melchior
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, ITALY, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via del Cotonificio 108, 33100 Udine, ITALY, Department of Chemistry, The Florida State University, Tallahassee, Florida 32306-3006, and Pacific Northwest National Laboratory, Richland, Washington 99352
| | - R. Portanova
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, ITALY, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via del Cotonificio 108, 33100 Udine, ITALY, Department of Chemistry, The Florida State University, Tallahassee, Florida 32306-3006, and Pacific Northwest National Laboratory, Richland, Washington 99352
| | - M. Tolazzi
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, ITALY, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via del Cotonificio 108, 33100 Udine, ITALY, Department of Chemistry, The Florida State University, Tallahassee, Florida 32306-3006, and Pacific Northwest National Laboratory, Richland, Washington 99352
| | - G. R. Choppin
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, ITALY, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via del Cotonificio 108, 33100 Udine, ITALY, Department of Chemistry, The Florida State University, Tallahassee, Florida 32306-3006, and Pacific Northwest National Laboratory, Richland, Washington 99352
| | - Z. Wang
- Dipartimento di Scienze Chimiche, Università di Padova, Via Marzolo 1, 35131 Padova, ITALY, Dipartimento di Scienze e Tecnologie Chimiche, Università di Udine, Via del Cotonificio 108, 33100 Udine, ITALY, Department of Chemistry, The Florida State University, Tallahassee, Florida 32306-3006, and Pacific Northwest National Laboratory, Richland, Washington 99352
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