1
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Alguacil A, Scalambra F, Romerosa A, Bento-Oliveira A, Marques F, Maximiano I, de Almeida RFM, Tomaz AI, Valente A. Evaluation of the Antiproliferative Properties of CpRu Complexes Containing N-Methylated Triazaphosphaadamantane Derivatives. Bioinorg Chem Appl 2023; 2023:6669394. [PMID: 37808953 PMCID: PMC10555500 DOI: 10.1155/2023/6669394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/06/2023] [Accepted: 08/11/2023] [Indexed: 10/10/2023] Open
Abstract
Piano-stool-{CpRu} complexes containing 1,3,5-triaza-7-phosphaadamantane (PTA), N-methyl-1,3,5-triaza-7-phosphaadamantane (mPTA), and 3,7-dimethyl-1,3,7-triaza-5-phosphabyciclo[3.3.1]nonane (dmoPTA) were evaluated as drugs against breast cancer. The evaluated compounds include two new examples of this family, the complexes [RuCp(DMSO-κS)(HdmoPTA)(PPh3)](CF3SO3)2 (8) and [RuCp(PPh3)2-µ-dmoPTA-1κP-2κ2N,N'-PdCl2](CF3SO3) (11), which have been synthesized and characterized by NMR, IR, and single-crystal X-ray diffraction. The cytotoxic activity of compounds was evaluated against MDA-MB-231 breast cancer cells, and the three most active complexes were further tested against the hormone-dependent MCF-7 breast cancer cell line. Their cell death mechanism and ruthenium uptake were also evaluated, as well as their binding ability to human serum albumin.
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Affiliation(s)
- Andres Alguacil
- Área de Química Inorgánica–CIESOL, Universidad de Almería, Almería 04120, Spain
| | - Franco Scalambra
- Área de Química Inorgánica–CIESOL, Universidad de Almería, Almería 04120, Spain
| | - Antonio Romerosa
- Área de Química Inorgánica–CIESOL, Universidad de Almería, Almería 04120, Spain
| | - Andreia Bento-Oliveira
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
| | - Fernanda Marques
- Centro de Ciências e Tecnologias Nucleares e Departamento de Engenharia e Ciências Nculeares, Instituto Superior Técnico (C2TN/IST), Universidade de Lisboa, Estrada Nacional 10, Bobadela LRS 2695-066, Portugal
| | - Ines Maximiano
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
| | - Rodrigo F. M. de Almeida
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
| | - Ana Isabel Tomaz
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
| | - Andreia Valente
- Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande 1749-016, Lisboa, Portugal
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2
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Alguacil A, Scalambra F, Lorenzo-Luis P, Puerta A, González-Bakker A, Mendoza Z, Padrón JM, Romerosa A. Tetranuclear Ru 2Cu 2 and Ru 2Ni 2 complexes with nanomolar anticancer activity. Dalton Trans 2023. [PMID: 37404078 DOI: 10.1039/d3dt01284k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/06/2023]
Abstract
Complexes [{RuCp(PPh3)2-μ-dmoPTA-1κP:2κ2-N,N'-CuCl}2-μ-Cl-μ-OCH3](CF3SO3)2·(CH3OH)4 (1) and [{RuCp(PPh3)2-μ-dmoPTA-1κP:2κ2-N,N'-NiCl}2-μ-Cl-μ-OH](CF3SO3)2 (2) have been synthesized and characterized. Their antiproliferative activities were assessed against six human solid tumours showing nanomolar GI50 values. The effects of 1 and 2 on SW1573 cells colony formation, HeLa cells action mechanism and their interaction with the pBR322 DNA plasmid were evaluated.
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Affiliation(s)
- Andrés Alguacil
- Área de Química Inorgánica-CIESOL, Universidad de Almería, 04120, Almería, Spain.
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL, Universidad de Almería, 04120, Almería, Spain.
| | - Pablo Lorenzo-Luis
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio Gónzalez", Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38071 La Laguna, Spain
- Área de Química Inorgánica, Departamento de Química, Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 3, 38071 La Laguna, Spain
| | - Adrián Puerta
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio Gónzalez", Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38071 La Laguna, Spain
| | - Aday González-Bakker
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio Gónzalez", Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38071 La Laguna, Spain
| | - Zenaida Mendoza
- Área de Química Inorgánica-CIESOL, Universidad de Almería, 04120, Almería, Spain.
- Área de Química Inorgánica, Departamento de Química, Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 3, 38071 La Laguna, Spain
| | - José M Padrón
- BioLab, Instituto Universitario de Bio-Orgánica "Antonio Gónzalez", Universidad de La Laguna, C/ Astrofísico Francisco Sánchez 2, 38071 La Laguna, Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL, Universidad de Almería, 04120, Almería, Spain.
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3
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Del Pino JMV, Scalambra F, Bermejo-Casadesús C, Massaguer A, García-Maroto F, Romerosa A. Study of the biological activity of photoactive bipyridyl-Ru(II) complexes containing 1,3,5-triaza-7-phosphaadamantane (PTA). J Inorg Biochem 2023; 246:112291. [PMID: 37352655 DOI: 10.1016/j.jinorgbio.2023.112291] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/09/2023] [Accepted: 06/10/2023] [Indexed: 06/25/2023]
Abstract
The water-soluble ruthenium complex cis-[Ru(dcbpyH)2(PTAH)2]Cl2·3H2O (1) (dcbpy = 4,4'-dicarboxy-2,2'-bipyridine; PTA = 1,3,5-triaza-7-phosphaadamantane) has been synthesized and characterised by NMR, IR spectroscopy, elemental analysis, and single-crystal X-ray diffraction. The optical properties of 1 were studied, including photoactivation under visible light, as well as its biological properties, together with those of the previously published Ru complexes cis-[Ru(bpy)2(PTA)2]Cl2 (2), trans-[Ru(bpy)2(PTA)2](CF3SO3)2 (3) and cis-[Ru(bpy)2(H2O)(PTA)](CF3SO3)2 (4) (bpy = 2,2'-bipyridine). Anticancer activities of the complexes against human lung (A549), cervical (HeLa) and prostate (PC3) carcinoma cells were evaluated under dark conditions and upon photoactivation with visible light. None of the complexes exhibited cytotoxic activity in the absence of light irradiation (IC50 > 100 μM). However, after photoactivation, the cytotoxicity of complexes 1, 2 and 3 against the three cell lines markedly increased, resulting in IC50 values between 25.3 μM and 9.3 μM. Notably, these complexes did not show toxicity against red blood cells. These findings show the potential of complexes 1, 2 and, particularly, 3 for selective and controlled cancer photochemotherapy. The reactivity of the Ru complexes against DNA under UV-Vis irradiation was studied by analysing plasmid mobility. Experimental data shows that 4 unfolds supercoiled DNA (SC DNA) both in the dark and under visible irradiation, while 1 and 3 are only active under light, being 2 inactive in either case. The unfolding activities of complexes 3 and 4 were dependent on the air present in the reaction. The measured intracellular levels of reactive oxygen species (ROS) upon irradiation with complexes 1, 2 and 3 suggest that their mechanism of action is related to oxidative stress.
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Affiliation(s)
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL, Universidad de Almería, Almería, Spain
| | | | - Anna Massaguer
- Departament de Biologia, Universitat de Girona, Girona, Spain
| | | | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL, Universidad de Almería, Almería, Spain.
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4
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López‐Sánchez B, Bohome‐Espinosa AB, Scalambra F, Romerosa A. Ru complexes containing N‐methyl‐1,3,5‐triaza‐7‐phosphaadamantane (mPTA) as catalysts for the isomerization of 2‐cyclohexen‐1‐ol. Appl Organomet Chem 2022. [DOI: 10.1002/aoc.6971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Affiliation(s)
| | | | - Franco Scalambra
- Área de Química Inorgánica‐CIESOL, Universidad de Almería Almería Spain
| | - Antonio Romerosa
- Área de Química Inorgánica‐CIESOL, Universidad de Almería Almería Spain
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5
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Alguacil A, Scalambra F, Romerosa A. Insights into the κ-P,N Coordination of 1,3,5-Triaza-7-phosphaadamantane and Derivatives: κ-P,N-Heterometallic Complexes and a 15N Nuclear Magnetic Resonance Survey. Inorg Chem 2022; 61:5779-5791. [PMID: 35378037 PMCID: PMC9019812 DOI: 10.1021/acs.inorgchem.1c03831] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
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Complexes {[(PTA)2CpRu-μ-CN-1κC:2κ2N-RuCp(PTA)2-ZnCl3]}·2DMSO (13) {[ZnCl2(H2O)]-(PTA-1κP:2κ2N)(PTA)CpRu-μ-CN-1κC:2κ2N-RuCp(PTA)(PTA-1κP:2κ2N)-[ZnCl2(H2O)]}Cl (14), [RuCp(HdmoPTA)(PPh3)(PTA)](CF3SO3)2 (20), [RuCp(HdmoPTA)(HPTA)(PPh3)](CF3SO3)3 (21), and [RuCp(dmoPTA)(PPh3)(PTA)](CF3SO3) (22) were obtained
and characterized, and their crystal structure together with that
of the previously published complex 18 is reported. The
behavior of the 1,3,5-triaza-7-phosphatricyclo[3.3.1.13,7]decane (PTA)
and 3,7-dimethyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane (dmoPTA)
ligands against protonation and κN-coordination
is discussed, on the basis of 15N nuclear magnetic resonance
data collected on 22 different compounds, including PTA (1), HdmoPTA (7H), and some common derivatives as free
ligands (2–6 and 8), along with mono-
and polymetallic complexes containing PTA and/or HdmoPTA (9–22). 15N detection via 1H–15N heteronuclear multiple bond correlation allowed the construction
of a small library of 15N chemical shifts that shed light
on important features regarding κN-coordination
in PTA and its derivatives. To shed light
on the behavior of the triazaphosphines 1,3,5-triaza-7-phosphatricyclo[3.3.1.13,7]decane
(PTA) and 3,7-dimethyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane
(dmoPTA) upon κN coordination and N protonation, the 15N chemical shifts of 22 compounds, including PTA and a representative
variety of its derivatives, piano-stool complexes, were collected
by 1H−15N heteronuclear multiple bond
correlation nuclear magnetic resonance. New heterometallic complexes
containing PTA were also synthesized and fully characterized.
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Affiliation(s)
- Andrés Alguacil
- Área de Química Inorgánica-CIESOL, Universidad de Almería, 04120 Almería, Spain
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL, Universidad de Almería, 04120 Almería, Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL, Universidad de Almería, 04120 Almería, Spain
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6
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Scalambra F, Díaz-Ortega IF, Romerosa-Nievas AM. Photo-generation of H2 by Heterometallic Complexes. Dalton Trans 2022; 51:14022-14031. [DOI: 10.1039/d2dt01870e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multiple and different metals in a complex can accomplish single and sequential multi-step reactions, providing valuable procedures to obtain chemicals in one-pot synthetic routes. Biology has shown how cooperative catalysis...
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7
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Kordestani N, Abas E, Grasa L, Alguacil A, Scalambra F, Romerosa A. The Significant Influence of a Second Metal on the Antiproliferative Properties of the Complex [Ru(η 6 -C 10 H 14 )(Cl 2 )(dmoPTA)]. Chemistry 2021; 28:e202103048. [PMID: 34806242 PMCID: PMC9299940 DOI: 10.1002/chem.202103048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Indexed: 12/16/2022]
Abstract
Complexes [Ru(η6−C10H14)(Cl2)(HdmoPTA)](OSO2CF3) (1), [Ru(η6−C10H14)(Cl2)(dmoPTA)] (2) and [Ru(η6−C10H14)(Cl2)‐μ‐dmoPTA‐1κP:2κ2N,N’‐MCl2] (M=Zn (3), Co (4), Ni (5), dmoPTA=3,7‐dimethyl‐1,3,7‐triaza‐5‐phosphabicyclo[3.3.1]nonane) have been synthesized and characterized by elemental analysis and spectroscopic techniques. The crystal structures of 1, 3 and 5 were obtained by single‐crystal X‐ray diffraction. The antiproliferative activity of the complexes was evaluated against colon cancer cell line Caco‐2/TC7 by using the MTT protocol. The monometallic ruthenium complexes 1 and 2 were found to be inactive, but the bimetallic complexes 3, 4 and 5 display an increased activity (IC503: 9.07±0.27, 4: 5.40±0.19, 5: 7.15±0.30 μM) compared to cisplatin (IC50=45.6±8.08 μM). Importantly, no reduction in normal cell viability was observed in the presence of the complexes. Experiments targeted to obtain information on the possible action mechanism of the complexes, such as cell cycle, ROS and gene expression studies, were performed. The results showed that the complexes display different properties and action mechanism depending on the nature of metal, M, bonded to the CH3NdmoPTA atoms.
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Affiliation(s)
- Nazanin Kordestani
- Área de Química Inorgánica-CIESOL Facultad de CienciasUniversidad de AlmeríaCarr. Sacramento, s/n04120La Cañada, AlmeríaSpain
| | - Elisa Abas
- Departamento de Farmacología, Fisiología y Medicina Legal y Forense Facultad de VeterinariaUniversidad de ZaragozaMiguel Servet, 17750013ZaragozaSpain
| | - Laura Grasa
- Departamento de Farmacología, Fisiología y Medicina Legal y Forense Facultad de VeterinariaUniversidad de ZaragozaMiguel Servet, 17750013ZaragozaSpain
- Instituto de Investigación Sanitaria de Aragón (IIS Aragón)San Juan Bosco, 1350009ZaragozaSpain
- Instituto Agroalimentario de Aragón -IA2-Universidad de Zaragoza–CITA)Miguel Servet, 17750013ZaragozaSpain
| | - Andres Alguacil
- Área de Química Inorgánica-CIESOL Facultad de CienciasUniversidad de AlmeríaCarr. Sacramento, s/n04120La Cañada, AlmeríaSpain
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL Facultad de CienciasUniversidad de AlmeríaCarr. Sacramento, s/n04120La Cañada, AlmeríaSpain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL Facultad de CienciasUniversidad de AlmeríaCarr. Sacramento, s/n04120La Cañada, AlmeríaSpain
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8
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Hajji L, Saraiba-Bello C, Scalambra F, Segovia-Torrente G, Romerosa A. Ru complexes containing Cp, mPTA and natural purine bases (mPTA = methyl-N-1,3,5-triaza-7-phosphaadamantane): Evaluation of their antiproliferative activity, solubility and redox properties. J Inorg Biochem 2021; 218:111404. [PMID: 33684683 DOI: 10.1016/j.jinorgbio.2021.111404] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/16/2021] [Accepted: 02/16/2021] [Indexed: 11/30/2022]
Abstract
Complexes [RuCp(Adeninate-κN9)(mPTA)2](Cl0.5)(CF3SO3)2.5·H2O (1·H2O), [RuCp(Guaninate-κN7)(mPTA)2](CF3SO3)2·H2O (2·H2O), [RuCp(Theophyllinate-κN7)(mPTA)2](CF3SO3)2·1.5H2O (3·1.5H2O) and [RuCp(Pur-κN)(mPTA)(PPh3)](CF3SO3) (4-6) (Pur = Adeninate, Guaninate, Teophyllinate; mPTA = N-methyl -1,3,5-triaza-7-phosphaadamantane) have been synthesized and characterized. Structure of complexes 1·H2O and 3·1.5H2O were determined by single-crystal X-ray diffraction. Solubility in water, Log P, electrochemical properties and antiproliferative activities of the complexes (against cisplatin-sensitive T2 and cisplatin-resistant SKOV3 cell lines) have been assessed and discussed.
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Affiliation(s)
- Lazhar Hajji
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias Experimentales, Universidad de Almería, 04071 Almería, Spain
| | - Cristobal Saraiba-Bello
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias Experimentales, Universidad de Almería, 04071 Almería, Spain
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias Experimentales, Universidad de Almería, 04071 Almería, Spain
| | - Gaspar Segovia-Torrente
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias Experimentales, Universidad de Almería, 04071 Almería, Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias Experimentales, Universidad de Almería, 04071 Almería, Spain.
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9
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Scalambra F, Imberti S, Holzmann N, Bernasconi L, Romerosa A. Neutron Scattering Techniques for Studying Metal Complexes in Aqueous Solution. ACS Omega 2021; 6:1751-1757. [PMID: 33521416 PMCID: PMC7841769 DOI: 10.1021/acsomega.0c05030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/21/2020] [Indexed: 06/12/2023]
Abstract
Neutron scattering combined with ab initio calculations provides a powerful tool for studying metal complexes in different solvents and, particularly, in water. The majority of traditional characterization techniques in catalysis provide only limited information on homogeneous catalytic processes. Neutron scattering, on the other hand, thanks to its sensitivity to hydrogen atoms, and therefore water molecules, can be used to build detailed models of reaction paths and to observe, at a molecular level, the influence of solvent molecules on a catalytic process. In this Mini-Review we describe several examples on how neutron scattering combined with ab initio calculations can be used to examine the nature of the interaction of water molecules with catalytically active metal complexes in solution.
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Affiliation(s)
- Franco Scalambra
- Área
de Química Inorgánica-CIESOL, Universidad de Almería, 04120 Almería, Spain
| | - Silvia Imberti
- Global
Journals Development, ACS International
Ltd., Oxford OX2 0QS, United Kingdom
| | - Nicole Holzmann
- Scientific
Computing Department, STFC Rutherford Appleton
Laboratory, Harwell Oxford, Didcot OX11 0QX U.K.
| | - Leonardo Bernasconi
- Center
for Research Computing, University of Pittsburgh, 4420 Bayard Street, Pittsburgh, Pennsylvania 15260, United States
| | - Antonio Romerosa
- Área
de Química Inorgánica-CIESOL, Universidad de Almería, 04120 Almería, Spain
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10
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Scalambra F, Romerosa A. Metal Free Phosphorus Butterfly Compounds. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Franco Scalambra
- Área de Química Inorgánica-CIESOL Universidad de Almería Carretera Sacramento s/n 04120 Almería Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL Universidad de Almería Carretera Sacramento s/n 04120 Almería Spain
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11
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Scalambra F, Lopez-Sanchez B, Holzmann N, Bernasconi L, Romerosa A. Steps Ahead in Understanding the Catalytic Isomerization Mechanism of Linear Allylic Alcohols in Water: Dynamics, Bonding Analysis, and Crystal Structure of an η2-Allyl-Intermediate. Organometallics 2020. [DOI: 10.1021/acs.organomet.0c00585] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Franco Scalambra
- Área de Química Inorgánica-CIESOL, Universidad de Almería, Almería 04120, Spain
| | - Belen Lopez-Sanchez
- Área de Química Inorgánica-CIESOL, Universidad de Almería, Almería 04120, Spain
| | - Nicole Holzmann
- Research Center for Computer-Aided Drug Discovery, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
- Scientific Computing Department, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, United Kingdom
| | - Leonardo Bernasconi
- Center for Research Computing, University of Pittsburgh, 4420 Bayard Street, Pittsburgh, Pennsylvania 15260, United States
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL, Universidad de Almería, Almería 04120, Spain
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12
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Scalambra F, Sierra-Martin B, Serrano-Ruiz M, Fernandez-Barbero A, Romerosa A. First exfoliated Ru-Ru-Au organometallic polymer with layered structure. Chem Commun (Camb) 2020; 56:9441-9444. [PMID: 32662805 DOI: 10.1039/d0cc04325g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A new water soluble heterometallic polymeric complex [{(PTA)2CpRu-μ-CN-1κC:2κ2N-RuCp(PTA)2}-μ-{Au(CN)4}4]n·2H2O (1) is synthesized and characterized by single crystal X-ray diffraction. This complex self-assembles forming 3D polymeric structures with large scale hexagonal conformation. They also organize as 3D stacks of polymer sandwiches that can be exfoliated providing mono heterometallic-3D layers, as shown by electron microscopy. Regarding the polymer dynamics, quasi-elastic neutron scattering shows a transition from vibrational Debye-Waller behaviour to a more dynamically active state as a result of the loss of structural water molecules.
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Affiliation(s)
- Franco Scalambra
- Department of Chemistry and Physics, University of Almeria, 04120 Almeria, Spain. and Inorganic Chemistry Lab-CIESOL, University of Almeria, 04120 Almeria, Spain
| | | | - Manuel Serrano-Ruiz
- Department of Chemistry and Physics, University of Almeria, 04120 Almeria, Spain.
| | - Antonio Fernandez-Barbero
- Department of Chemistry and Physics, University of Almeria, 04120 Almeria, Spain. and Institute of Applied Chemical Sciences, Universidad Autonoma de Chile, 8320000 Santiago, Chile
| | - Antonio Romerosa
- Department of Chemistry and Physics, University of Almeria, 04120 Almeria, Spain. and Inorganic Chemistry Lab-CIESOL, University of Almeria, 04120 Almeria, Spain
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13
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Hajji L, Saraiba-Bello C, Segovia-Torrente G, Scalambra F, Romerosa A. CpRu Complexes Containing Water Soluble Phosphane PTA and Natural Purines Adenine, Guanine and Theophylline: Synthesis, Characterization, and Antiproliferative Properties. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900677] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lazhar Hajji
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 40120 Almería Spain
| | - Cristobal Saraiba-Bello
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 40120 Almería Spain
| | - Gaspar Segovia-Torrente
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 40120 Almería Spain
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 40120 Almería Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 40120 Almería Spain
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14
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Sierra-Martin B, Serrano-Ruiz M, Scalambra F, Fernandez-Barbero A, Romerosa A. Novel Ruthenium-Silver PTA-Based Polymers and Their Behavior in Water. Polymers (Basel) 2019; 11:polym11081249. [PMID: 31357722 PMCID: PMC6724013 DOI: 10.3390/polym11081249] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 07/25/2019] [Indexed: 12/18/2022] Open
Abstract
New coordination polymers based on two metal-containing moieties Ru–Ag are synthesized: Na[RuCpX(PTA)-μ-(PTA)-1κP:2κ2N-AgX2]∞ (X = Cl (1), Br (2), I (3)). Characterization is performed by NMR, UV-visible and FT-IR spectroscopy, optical-electron microscopy, and elemental analyses (C, H, N, S). Light scattering is employed to characterize the colloidal particles growth by polymer self-assembling. These structures are stable over a broad range of pH and exhibit thermally-driven swelling, thus resembling a typical thermosensitive hydrogel.
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Affiliation(s)
| | - Manuel Serrano-Ruiz
- Inorganic Chemistry Lab-CIESOL, Department of Chemistry and Physics, University of Almeria, 04120 Almeria, Spain
| | - Franco Scalambra
- Inorganic Chemistry Lab-CIESOL, Department of Chemistry and Physics, University of Almeria, 04120 Almeria, Spain
| | - Antonio Fernandez-Barbero
- Department of Chemistry and Physics, University of Almeria, 04120 Almeria, Spain
- Institute of Applied Chemical Sciences, Universidad Autonoma de Chile, 8320000 Santiago, Chile
| | - Antonio Romerosa
- Inorganic Chemistry Lab-CIESOL, Department of Chemistry and Physics, University of Almeria, 04120 Almeria, Spain.
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15
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Scalambra F, Lorenzo‐Luis P, de los Ríos I, Romerosa A. New Findings in Metal Complexes with Antiproliferative Activity Containing 1,3,5‐Triaza‐7‐phosphaadamantane (PTA) and Derivative Ligands. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801426] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Franco Scalambra
- Área de Química Inorgánica‐CIESOL. Universidad de Almería Carretera Sacramento s/n Almería Spain
| | - Pablo Lorenzo‐Luis
- Sección Química Inorgánica, Departamento de Química Universidad de La Laguna. C/Astrofísico Francisco Sánchez 2 38206 La Laguna (ULL) Spain
| | - Isaac de los Ríos
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica Facultad de Ciencias Universidad de Cádiz 11510 Puerto Real (Cádiz) Spain
| | - Antonio Romerosa
- Área de Química Inorgánica‐CIESOL. Universidad de Almería Carretera Sacramento s/n Almería Spain
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16
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Scalambra F, Holzmann N, Bernasconi L, Imberti S, Romerosa A. The Interaction of Water with cis
and trans
{Ru(bpy)2
(PTA)2
}2+
(PTA = 1,3,5-Triaza-7-phosphaadamantane) Studied by Neutron Scattering and Ab Initio Calculations. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801499] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Franco Scalambra
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n Almería Spain
| | - Nicole Holzmann
- Scientific Computing Department; STFC Rutherford Appleton Laboratory; Harwell Oxford Didcot OX11 0QX UK
| | - Leonardo Bernasconi
- Center for Research Computing; University of Pittsburgh; 312 Schenley Place, 4420 Bayard Street Pittsburgh PA 15260 USA
| | - Silvia Imberti
- ISIS Neutron and Muon Source; STFC Rutherford Appleton Laboratory; Harwell Oxford Didcot OX11 0QX UK
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n Almería Spain
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17
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Scalambra F, Rudić S, Romerosa A. Molecular Insights into Bulk and Porous κ2
P,N
-PTA Metal-Organic Polymers by Simultaneous Raman Spectroscopy and Inelastic Neutron Scattering. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801283] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Franco Scalambra
- Áea de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 04120 La Canada de San Urbano Spain
| | - Svemir Rudić
- ISIS Facility; STFC, Rutherford Appleton Laboratory; Chilton OX11 0QX Didcot UK
| | - Antonio Romerosa
- Áea de Química Inorgánica-CIESOL; Universidad de Almería; Carretera Sacramento s/n 04120 La Canada de San Urbano Spain
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18
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Scalambra F, López-Sanchez B, Romerosa A. Good isomerization of 2-cyclohexenol by two Ru(ii) complexes, synthesis and characterization of a reaction intermediate. Dalton Trans 2018; 47:16398-16402. [PMID: 30168829 DOI: 10.1039/c8dt02560f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic activities of [RuClCp(PTA)2] (1) and [RuCp(PTA)2(H2O-κO)]OTf (2) were assessed for the redox isomerization of the cyclic allylic alcohol 2-cyclohexenol into cyclohexanone in water and biphasic media. Complex 2 showed unprecedented good TONs for the studied conversion both in water (TON = 647) and in the biphase of cyclohexene/H2O (TON = 3420) while 1 showed a lower but also good activity (water TON = 95, biphasic TON = 100). The catalytic reaction intermediate [RuCp(PTA)2(η2-C6H9OH)]CF3SO3 (3) was synthesized and characterized using NMR.
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Affiliation(s)
- Franco Scalambra
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias, Universidad de Almería, Almería, Spain.
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19
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Mendoza Z, Lorenzo-Luis P, Scalambra F, Padrón JM, Romerosa A. Cover Feature: One Step Up in Antiproliferative Activity: The Ru-Zn Complex [RuCp(PPh3
)2
-µ-dmoPTA-1κP
:2κ2
N
,N′
-ZnCl2
](CF3
SO3
) (Eur. J. Inorg. Chem. 43/2018). Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201801353] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zenaida Mendoza
- Departamento de Química-Sección Química Inorgánica; Universidad de La Laguna (LL); 38206 La Laguna Spain
| | - Pablo Lorenzo-Luis
- Departamento de Química-Sección Química Inorgánica; Universidad de La Laguna (LL); 38206 La Laguna Spain
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL.; Universidad de Almería; Carretera Sacramento s/n Almería Spain
| | - José M. Padrón
- BioLab; Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG); Universidad de La Laguna; C/Astrofísico Francisco Sánchez 2 38206 La Laguna Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL.; Universidad de Almería; Carretera Sacramento s/n Almería Spain
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20
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Mendoza Z, Lorenzo-Luis P, Scalambra F, Padrón JM, Romerosa A. One Step Up in Antiproliferative Activity: The Ru-Zn Complex [RuCp(PPh3
)2
-µ-dmoPTA-1κP
:2κ2
N
,N′
-ZnCl2
](CF3
SO3
). Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800857] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Zenaida Mendoza
- Departamento de Química-Sección Química Inorgánica; Universidad de La Laguna (LL); 38206 La Laguna Spain
| | - Pablo Lorenzo-Luis
- Departamento de Química-Sección Química Inorgánica; Universidad de La Laguna (LL); 38206 La Laguna Spain
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL.; Universidad de Almería; Carretera Sacramento s/n Almería Spain
| | - José M. Padrón
- BioLab; Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG); Universidad de La Laguna; C/Astrofísico Francisco Sánchez 2 38206 La Laguna Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL.; Universidad de Almería; Carretera Sacramento s/n Almería Spain
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21
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Scalambra F, Holzmann N, Bernasconi L, Imberti S, Romerosa A. Water Participation in Catalysis: An Atomistic Approach to Solvent Effects in the Catalytic Isomerization of Allylic Alcohols. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00199] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Franco Scalambra
- Área de Química Inorgánica-CIESOL, Universidad de Almería, Almería 04120, Spain
| | - Nicole Holzmann
- Scientific Computing Department, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, OX11 0QX, U.K
| | - Leonardo Bernasconi
- Scientific Computing Department, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, OX11 0QX, U.K
| | - Silvia Imberti
- ISIS Neutron and Muon Source, STFC Rutherford Appleton Laboratory, Harwell Oxford, Didcot, OX11 0QX, U.K
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL, Universidad de Almería, Almería 04120, Spain
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22
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Scalambra F, Serrano-Ruiz M, Romerosa A. Water driven formation of channels: unusual solid-state structural transformation of a heterometallic polymer. Dalton Trans 2018; 47:3588-3595. [DOI: 10.1039/c7dt04515h] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
We describe the synthesis of trans-{[(PTA)2CpRu-μ-CN-RuCp(PTA)2-μ-CoCl3]}n·(DMSO)n, and its crystal-to-crystal transformation to its cis isomer, with channels where water is nanoconfined, upon addition of water to the crystallization medium.
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Affiliation(s)
- Franco Scalambra
- Área de Química Inorgánica-CIESOL
- Universidad de Almería
- 04120, Almería
- Spain
| | | | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL
- Universidad de Almería
- 04120, Almería
- Spain
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23
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Hajii L, Saraiba Bello C, Scalambra F, Segovia-Torrente G, Romerosa A, Canella A. Ruthenium complexes containing mPTA and thiopurines bis(8-thiotheophylline)-(CH2)n (n = 1 – 3; mPTA = N-methyl-1,3,5-triaza-7-phosphaadamantane). J COORD CHEM 2017. [DOI: 10.1080/00958972.2017.1311411] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Lazhar Hajii
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias Experimentales, Universidad de Almería, Almería, Spain
| | - Cristobal Saraiba Bello
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias Experimentales, Universidad de Almería, Almería, Spain
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias Experimentales, Universidad de Almería, Almería, Spain
| | - Gaspar Segovia-Torrente
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias Experimentales, Universidad de Almería, Almería, Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL, Facultad de Ciencias Experimentales, Universidad de Almería, Almería, Spain
| | - A. Canella
- Dipartimento di Biochimica e Biologia Moleculare dell’, Università d Ferrara, Ferrara, Italy
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24
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Scalambra F, Serrano-Ruiz M, Romerosa A. Water and catalytic isomerization of linear allylic alcohols by [RuCp(H2O-κO)(PTA)2]+(PTA = 1,3,5-triaza-7-phosphaadamantane). Dalton Trans 2017; 46:5864-5871. [DOI: 10.1039/c6dt04262g] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The water soluble complex [RuCp(H2O-κO)(PTA)2]+showed to be an excellent catalyst for the isomerization of allylic alcohols from 3-buten-2-ol to 1-octen-3-ol in water, which was mandatory for obtaining the best conversion.
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Affiliation(s)
- Franco Scalambra
- Área de Química Inorgánica-CIESOL
- Facultad de Ciencias
- Universidad de Almería
- Almería
- Spain
| | - Manuel Serrano-Ruiz
- Área de Química Inorgánica-CIESOL
- Facultad de Ciencias
- Universidad de Almería
- Almería
- Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL
- Facultad de Ciencias
- Universidad de Almería
- Almería
- Spain
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25
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Mendoza Z, Lorenzo-Luis P, Scalambra F, Padrón JM, Romerosa A. Enhancement of the antiproliferative activity of [RuCp(PPh3)2(dmoPTA-1κP)]+via its coordination to one {CoCl2} unit: synthesis, crystal structure and properties of [RuCp(PPh3)2-μ-dmoPTA-1κP:2κ2N,N′-CoCl2](OTf)·0.25H2O. Dalton Trans 2017; 46:8009-8012. [DOI: 10.1039/c7dt01741c] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Antiproliferative activity up to 354-fold for WiDr-colon cells than cisplatin.
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Affiliation(s)
- Zenaida Mendoza
- Inorganic Chemistry Section
- Chemistry Department
- Faculty of Science
- University of La Laguna
- 38071 La Laguna
| | - Pablo Lorenzo-Luis
- Inorganic Chemistry Section
- Chemistry Department
- Faculty of Science
- University of La Laguna
- 38071 La Laguna
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL
- Facultad de Ciencias
- Universidad de Almería
- Almería
- Spain
| | - José M. Padrón
- BioLab
- Instituto Universitario de Bio-Orgánica “Antonio González” (IUBO-AG)
- Universidad de La Laguna
- 38206 La Laguna
- Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL
- Facultad de Ciencias
- Universidad de Almería
- Almería
- Spain
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26
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Mendoza Z, Lorenzo-Luis P, Serrano-Ruiz M, Martín-Batista E, Padrón JM, Scalambra F, Romerosa A. Synthesis and Antiproliferative Activity of [RuCp(PPh3)2(HdmoPTA)](OSO2CF3)2 (HdmoPTA = 3,7-H-3,7-Dimethyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane). Inorg Chem 2016; 55:7820-2. [DOI: 10.1021/acs.inorgchem.6b01207] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zenaida Mendoza
- Sección
de Química Inorgánica, Departamento de Química,
Facultad de Ciencias, Universidad de La Laguna, C/Astrofísico
Francisco Sánchez 3, La Laguna 38200, Tenerife, Spain
| | - Pablo Lorenzo-Luis
- Sección
de Química Inorgánica, Departamento de Química,
Facultad de Ciencias, Universidad de La Laguna, C/Astrofísico
Francisco Sánchez 3, La Laguna 38200, Tenerife, Spain
| | - Manuel Serrano-Ruiz
- Área
de Química Inorgánica-CIESOL, Facultad de Ciencias, Universidad de Almería, Almería 04120, Spain
| | - Elva Martín-Batista
- BioLab,
Instituto Universitario de Bio-Orgánica “Antonio González”,
Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, La Laguna 38200, Tenerife, Spain
| | - José M. Padrón
- BioLab,
Instituto Universitario de Bio-Orgánica “Antonio González”,
Centro de Investigaciones Biomédicas de Canarias, Universidad de La Laguna, C/Astrofísico Francisco Sánchez 2, La Laguna 38200, Tenerife, Spain
| | - Franco Scalambra
- Área
de Química Inorgánica-CIESOL, Facultad de Ciencias, Universidad de Almería, Almería 04120, Spain
| | - Antonio Romerosa
- Área
de Química Inorgánica-CIESOL, Facultad de Ciencias, Universidad de Almería, Almería 04120, Spain
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27
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Affiliation(s)
- Franco Scalambra
- Departamento de Quimica y Fisica-CIESOL; Universidad de Almeria; 04120 Almeria Spain
| | - Manuel Serrano-Ruiz
- Departamento de Quimica y Fisica-CIESOL; Universidad de Almeria; 04120 Almeria Spain
| | - Dietrich Gudat
- Institut für Anorganische Chemie; Universität Stuttgart; Pfaffenwaldring 55 Stuttgart Germany
| | - Antonio Romerosa
- Departamento de Quimica y Fisica-CIESOL; Universidad de Almeria; 04120 Almeria Spain
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28
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Scalambra F, Serrano-Ruiz M, Nahim-Granados S, Romerosa A. Ruthenium Complexes Containing 2,2′-Bipyridine and 1,3,5-Triaza-7-phosphaadamantane. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501357] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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29
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Scalambra F, Serrano-Ruiz M, Romerosa A. First Water-Soluble Backbone Ru-Ru-Ni Heterometallic Organometallic Polymer. Macromol Rapid Commun 2015; 36:689-93. [DOI: 10.1002/marc.201400657] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 02/02/2015] [Indexed: 11/12/2022]
Affiliation(s)
- Franco Scalambra
- Área de Química Inorgánica-CIESOL; Universidad de Almería; 04120 Almería Spain
| | - Manuel Serrano-Ruiz
- Área de Química Inorgánica-CIESOL; Universidad de Almería; 04120 Almería Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL; Universidad de Almería; 04120 Almería Spain
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30
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Serrano-Ruiz M, Imberti S, Bernasconi L, Jadagayeva N, Scalambra F, Romerosa A. Study of the interaction of water with the aqua-soluble dimeric complex [RuCp(PTA)2–μ-CN–1κC:2κ2N-RuCp(PTA)2](CF3SO3) (PTA = 1,3,5-triaza-7-phosphaadamantane) by neutron and X-ray diffraction in solution. Chem Commun (Camb) 2014; 50:11587-90. [PMID: 25141125 DOI: 10.1039/c4cc05225k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A bis-ruthenium complex was studied by neutron and X-ray diffraction in water showing how water interacts with the organometallic compound.
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Affiliation(s)
| | | | - Leonardo Bernasconi
- Scientific Computing Department
- STFC Rutherford Appleton Laboratory
- Didcot, UK
| | - Nazira Jadagayeva
- Área de Química Inorgánica-CIESOL
- Universidad de Almería
- 04071 Almería, Spain
| | - Franco Scalambra
- Área de Química Inorgánica-CIESOL
- Universidad de Almería
- 04071 Almería, Spain
| | - Antonio Romerosa
- Área de Química Inorgánica-CIESOL
- Universidad de Almería
- 04071 Almería, Spain
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31
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Baldisserotto A, Franceschini C, Scalambra F, Trapella C, Marastoni M, Sforza F, Gavioli R, Tomatis R. Synthesis and proteasome inhibition of N-allyl vinyl ester-based peptides. J Pept Sci 2010; 16:659-63. [DOI: 10.1002/psc.1280] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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32
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Marcelli E, Scalambra F, Cercenelli L, Plicchi G. A new hermetic antenna for wireless transmission systems of implantable medical devices. Med Eng Phys 2007; 29:140-7. [PMID: 16504564 DOI: 10.1016/j.medengphy.2005.12.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2004] [Revised: 11/03/2005] [Accepted: 12/13/2005] [Indexed: 10/25/2022]
Abstract
In implantable medical devices (IMDs), the need of telemetry systems able to provide wireless bidirectional communication to interrogate and remotely program the device, as well as to monitor the physiological status of the patient, is growing. The object of the present study was to evaluate a new hermetic antenna for wireless short-range transmission system for IMDs which would assure reliable long-term functioning due to the high level of hermeticity of antenna's housing that limits the influence of body tissue environment on transmitted signals. Experimental tests were conducted on three different prototypes to evaluate the most efficient antenna configuration for transmission both in the air and through a mixture simulating the human thorax. Further tests were performed to assess the influence of electro-catheters connected to IMDs on transmitted signals. Results showed that the hermetic antenna guarantees a good wireless transmission both in the air and through the human thorax simulator. The results also show that the presence of an electro-catheter can influence the effective radiated power (ERP) transmitted depending on its position in relation to the telemetric circuitry. Both a controlled increase of the ERP without exceeding the limits imposed by rules and the optimization of the tuning between the antenna and the transmitter can assure a reliable short-range transmission (several meters) using the new hermetic antenna proposed.
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Affiliation(s)
- E Marcelli
- Università di Bologna, Dipartimento di Discipline Chirurgiche, Rianimatorie e dei Trapianti, Italy.
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