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Čechová L, Kind J, Dračínský M, Filo J, Janeba Z, Thiele CM, Cigáň M, Procházková E. Photoswitching Behavior of 5-Phenylazopyrimidines: In Situ Irradiation NMR and Optical Spectroscopy Combined with Theoretical Methods. J Org Chem 2018; 83:5986-5998. [DOI: 10.1021/acs.joc.8b00569] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Lucie Čechová
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, Prague 16610, Czech Republic
| | - Jonas Kind
- Clemens-Schöpf-Institut für Organische Chemie und Biochemie, Technische Universität Darmstadt, Alarich-Weiss-Strasse 16, Darmstadt 64287, Germany
| | - Martin Dračínský
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, Prague 16610, Czech Republic
| | - Juraj Filo
- Institute of Chemistry, Comenius University, Ilkovičova 6, Bratislava 84215, Slovakia
| | - Zlatko Janeba
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, Prague 16610, Czech Republic
| | - Christina M. Thiele
- Clemens-Schöpf-Institut für Organische Chemie und Biochemie, Technische Universität Darmstadt, Alarich-Weiss-Strasse 16, Darmstadt 64287, Germany
| | - Marek Cigáň
- Institute of Chemistry, Comenius University, Ilkovičova 6, Bratislava 84215, Slovakia
| | - Eliška Procházková
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, Flemingovo nám. 2, Prague 16610, Czech Republic
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2
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Sergienko VS, Churakov AV. Specific structural features of monomeric octahedral oxo complexes of d 2-rhenium(V): 2. Structure of monooxo compounds of d 2-re(V) with nitrogen atoms at the trans positions to the O(oxo) ligands. CRYSTALLOGR REP+ 2015. [DOI: 10.1134/s1063774515030153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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3
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Palion-Gazda J, Gryca I, Machura B, Lloret F, Julve M. Synthesis, crystal structure and magnetic properties of the complex [ReCl 3(tppz)]·MeCN. RSC Adv 2015. [DOI: 10.1039/c5ra21466a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The paper reports the synthesis, X-ray structure and a deep analysis of the variable-temperature magnetic data of the new complex [ReCl3(tppz)]·MeCN being a very scarce example of mononuclear Re(iii) complexes incorporating nitrogen donor ligands.
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Affiliation(s)
- J. Palion-Gazda
- Department of Crystallography
- Institute of Chemistry
- University of Silesia
- 40006 Katowice
- Poland
| | - I. Gryca
- Department of Crystallography
- Institute of Chemistry
- University of Silesia
- 40006 Katowice
- Poland
| | - B. Machura
- Department of Crystallography
- Institute of Chemistry
- University of Silesia
- 40006 Katowice
- Poland
| | - Francesc Lloret
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Facultat de Química de la Universitat de València
- 46980 Paterna
- Spain
| | - Miguel Julve
- Departament de Química Inorgànica/Instituto de Ciencia Molecular (ICMol)
- Facultat de Química de la Universitat de València
- 46980 Paterna
- Spain
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4
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Machura B, Gryca I. Synthesis, spectroscopic characterization, X-ray structure and DFT calculations of p-tolylimido rhenium(V) complexes of 2,2′-dipyridylamine. Polyhedron 2013. [DOI: 10.1016/j.poly.2013.01.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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5
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Skarżyńska A, Siczek M, Sobczak JM. Synthesis, Characterisation and Catalytic Application of Oxidorhenium Complexes Bearing H‐Spirophosphorane Ligands. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Anna Skarżyńska
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot‐Curie Str., 50‐383 Wrocław, Poland, Fax: +48‐713282348
| | - Miłosz Siczek
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot‐Curie Str., 50‐383 Wrocław, Poland, Fax: +48‐713282348
| | - Jarosław M. Sobczak
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot‐Curie Str., 50‐383 Wrocław, Poland, Fax: +48‐713282348
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Machura B, Wolff M, Palion J, Kruszynski R. Synthesis, spectroscopic characterization, X-ray structure and DFT calculations of novel mononuclear Re(V) complex with imidazole-derived ligand. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2011.05.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Das B, Chakraborty R, Sarkar S, Zangrando E, Chattopadhyay P. A selenium-bonded oxorhenium(V) complex: solvothermal synthesis, structural characterization, and electrochemical behavior. TRANSIT METAL CHEM 2011. [DOI: 10.1007/s11243-011-9516-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Novel oxorhenium complex of 2-(2-pyridyl)-4-methylthiazole-5-carboxylic acid – Synthesis, spectroscopic characterization, X-ray structure and DFT calculations. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2011.03.028] [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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9
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Rhenium(V) oxocomplexes incorporating 2-(2H-benzotriazol-2-yl)-4,6-di-tert-pentylphenolate ligand: X-ray studies, spectroscopic characterization and DFT calculations. Struct Chem 2011. [DOI: 10.1007/s11224-011-9753-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Two novel rhenium complexes derived from [ReO(OMe)Cl2(dpphen)] – Synthesis, crystal structure, spectroscopic and magnetic properties. Polyhedron 2011. [DOI: 10.1016/j.poly.2010.10.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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11
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Machura B, Wolff M, Świtlicka A. Novel oxorhenium complex of 4,5-diaza-fluoren-9-one-synthesis, spectroscopic characterization, X-Ray structure and DFT calculations. INORG CHEM COMMUN 2011. [DOI: 10.1016/j.inoche.2010.09.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Machura B, Wolff M, Świtlicka A, Kruszynski R, Mroziński J. Synthesis, X-ray studies, spectroscopic investigation, and DFT calculations of [ReBr3(dppt)(OPPh3)]. Struct Chem 2010. [DOI: 10.1007/s11224-010-9609-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Das B, Sarkar S, Patra A, Drew MGB, Chattopadhyay P. Trichloro-mono- β -diketonato oxorhenium(V) complexes: synthesis, characterization and crystal structure. J COORD CHEM 2008. [DOI: 10.1080/00958970701764678] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Biswajit Das
- a Department of Chemistry , The University of Burdwan , Golapbag, Burdwan - 713104, India
| | - Sandipan Sarkar
- a Department of Chemistry , The University of Burdwan , Golapbag, Burdwan - 713104, India
| | - Animesh Patra
- a Department of Chemistry , The University of Burdwan , Golapbag, Burdwan - 713104, India
| | - Michael G. B. Drew
- b Department of Chemistry , Reading University , Reading RG6 6AD, Berks, England
| | - Pabitra Chattopadhyay
- a Department of Chemistry , The University of Burdwan , Golapbag, Burdwan - 713104, India
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Das S. Synthesis and characterization of new imidorhenium(V) and imidorhenium(VI) complexes of pyridyltriazines and pyrazinyltriazine with halide coligands including rare iodide. Inorganica Chim Acta 2008. [DOI: 10.1016/j.ica.2008.02.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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16
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Gaber M, El-Baradie KY, El-Sayed YSY. Spectral and thermal studies of 4-(1H-pyrazolo (3,4-d) pyrimidin-4-ylazo) benzene-1,3-diol complexes of cobalt(II), nickel(II) and copper(II). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2008; 69:534-41. [PMID: 17587639 DOI: 10.1016/j.saa.2007.05.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2007] [Revised: 04/12/2007] [Accepted: 05/01/2007] [Indexed: 05/16/2023]
Abstract
4-(1H-Pyrazolo (3,4-d) pyrimidin-4-ylazo) benzene-1,3-diol was synthesized and characterized by various spectral and analytical techniques. Semiempirical quantum calculations using the AM1 method have been performed in order to evaluate the geometry and electronic structure of the title azodye in the ground state. The complex formation between Co(II), Ni(II) and Cu(II) ions and the title azodye was studied conductometrically and spectrophotometrically. The spectrophotometric determination of the title metal ions and titration using EDTA are reported. Co(II), Ni(II) and Cu(II) complexes of the title azodye have been synthesized and characterized by elemental analysis, conductivity, magnetic susceptibility, IR, UV-Vis and thermal analysis (TGA and DTA).The spectral and magnetic data suggested the octahedral geometry for Co(II) and Ni(II) complexes while Cu(II) complexes have square planar geometry. The thermal studies confirmed the chemical formulations of the title complexes. The thermal degradation takes place in two or three steps depending on the type of the metal and the geometry of the complexes. The kinetics of the decomposition was examined by using Coats-Redfern relation. The activation energies and other activation parameters (DeltaH, DeltaS and DeltaG) were computed and related to the bonding and stereochemistry of the complexes.
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Affiliation(s)
- M Gaber
- Chemistry Department, Faculty of Science, Tanta University, Tanta, Egypt.
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17
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Machura B, Kruszynski R, Kusz J, Kłak J, Mroziński J. Novel rhenium(III) complexes with 5,6-diphenyl-3-(2-pyridyl)-1,2,4-trazine: X-ray structures and DFT calculations for [ReCl3(OPPh3)(dppt)] and [ReCl3(PPh3)(dppt)] complexes. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.05.053] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Dhara PK, Chattopadhyay P, Drew MGB. Oxorhenium(V) complexes with tetradentate NSNO pyridylthioazophenolates: syntheses, spectral and electrochemical studies. TRANSIT METAL CHEM 2006. [DOI: 10.1007/s11243-006-0061-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Das S, Chakravorty A. Oxidorhenium(
V
) Complexes of a Family of Bipyridine‐Like Ligands Including Pyridyltriazines and Pyrazinyltriazine: Oxygen‐Atom Transfer, Metal Redox and Correlations. Eur J Inorg Chem 2006. [DOI: 10.1002/ejic.200501102] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Samir Das
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India, Fax: +91‐33‐2473‐2805
| | - Animesh Chakravorty
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India, Fax: +91‐33‐2473‐2805
- Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560 064, India
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Das S, Chakraborty I. Synthesis and Characterization of Variable-valent Imidorhenium Species. A Family of Imidorhenium(VI) Amide Complexes and their Imidorhenium(V) Imine Precursors Related by Oxygen Atom Transfer. TRANSIT METAL CHEM 2006. [DOI: 10.1007/s11243-005-6375-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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21
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Chakravorty A. Variable‐Valent Rhenium Chemistry of Conjugated Nitrogenous Ligands: Structure and Reactivity. Eur J Inorg Chem 2005. [DOI: 10.1002/ejic.200500615] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Animesh Chakravorty
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700032, India
- Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India
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Sengupta S, Panda BK. Synthesis and structure of the 2-(chlorophenylazo)pyridine chelated tricarbonylrhenium(I) complex and its anion radical derivatives via electrochemical reduction. TRANSIT METAL CHEM 2005. [DOI: 10.1007/s11243-005-0726-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Chakraborty I, Panda BK, Gangopadhyay J, Chakravorty A. Rhenium Chemistry of Azooximes: Oxygen Atom Transfer, Azoimine Chelation, and Imine−Oxime Contrast. Inorg Chem 2005; 44:1054-60. [PMID: 15859286 DOI: 10.1021/ic0486116] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The concerned azooximes (L1OH, 1) are of type p-X-C6H4C(N2Ph)(NOH) (X = H, Me, Cl). The reaction of [Re(MeCN)Cl3(PPh3)2] with [Ag(L1OH)(L1O)] in cold dichloromethane-acetonitrile solvent has furnished the green colored ionized azoimine complex [ReV(O)Cl(PPh3)2(L1)](PF6), 2. In effect L1O- has undergone oxidative addition, the oxygen atom being transferred to the metal site. Upon treatment of [ReV(NPh)Cl3(PPh3)2] with L1OH in solution, the neutral azoimine complex [ReV(NPh)Cl3(L1H)], 3, resulted due to the spontaneous transfer of the oxime oxygen atom to a PPh3 ligand, which is eliminated as OPPh3. In contrast, the oxime of 2-acetylpyridine (L2OH, 4) did not undergo oxygen atom transfer and simply afforded the imine-oxime complex [ReV(NC6H4Y)Cl2(PPh3)(L2O)], 5, upon reacting with [ReV(NC6H4Y)Cl3(PPh3)2] (Y = H, Me, Cl). The spectral and electrochemical properties of 2, 3, and 5 and the structures of three representative compounds are reported. In the cation of 2 (X = H) the two PPh3 ligands lie trans to each other and the equatorial plane is defined by the five-membered azoimine chelate ring and the oxo and chloro ligands. The oxo ligand which forms a model triple bond (Re-O length 1.616(6) A) lies cis to the imine-N atom. In 3 (X = Cl) the ReCl3 fragment has meridional geometry and the imido nitrogen lies trans to the imine nitrogen of the planar azoimine chelate ring. In 5 x H2O (Y = Me), the Cl, oximato-N, and P atoms define an equatorial plane and the pyridine-N lies trans to the imido-N. The water of crystallization is hydrogen bonded to the oximato oxygen atom (O...O, 2.829(5) A). Reaction models in which chelation of the azooxime precedes oxygen atom transfer are proposed on the basis of oxophilicity of trivalent rhenium, Lewis acid activity of pentavalent rhenium, electron withdrawal by the azo group, and observed relative disposition of ligands in products.
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Affiliation(s)
- Indranil Chakraborty
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
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Panda BK, Sengupta S, Chakravorty A. Chemistry of tricarbonylrhenium(I) chelates of azopyrimidines, azoimidazoles and anion radicals thereof. J Organomet Chem 2004. [DOI: 10.1016/j.jorganchem.2004.02.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Abstract
The chemistry of antimony trisulphide colloid (ATC) was examined to elucidate the radiolabelling mechanism with 99mTcO4(-). Ion exchange chromatography and atomic absorption spectrophotometry techniques determined ATC to be resistant to hydrolysis in 0.1M hydrochloric acid (HCl) at 25 degrees C or 100 degrees C (>97% recovery, Sb3+ absent). Hydrogen sulphide gas detected did not participate in the mechanism, where antimony trisulphide and 99mTcO4(-) in HCl/100 degrees C yielded 96% 99mTc-product from a K2S-free formulation (versus 98% when K2S was present). 99mTcO4(-) was reduced >90% by DMSA or dithiothreitol under the same conditions, identifying involvement of thiol groups. Infrared analysis of Re-ATC showed S=O bonds, indicating excess thiol groups at the colloid surface were oxidised at the expense of 99mTcO4(-) reduction.
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Affiliation(s)
- Chris Tsopelas
- RAH Radiopharmacy, Nuclear Medicine Department, Royal Adelaide Hospital, North Terrace, Adelaide 5000, Australia.
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Synthesis and characterization of cis-Mo(CO)4(L–L′) and cis-Mo(CO)2(L–L′)2 complexes of N(1)-methyl-2-(arylazo)imidazoles (L–L′). Correlations of spectroscopic data with substituent effects. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00793-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Das S, Chakraborty I, Chakravorty A. Rhenium Chemistry of Diazabutadienes and Derived Iminoacetamides Spanning the Valence Domain II−VI. Synthesis, Characterization, and Metal-Promoted Regiospecific Imine Oxidation. Inorg Chem 2003; 42:6545-55. [PMID: 14514332 DOI: 10.1021/ic034586c] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The reaction of diazabutadienes of type R'N=C(R)-C(R)=NR', L (R = H, Me; R' = cycloalkyl, aryl) with Re(V)OCl(3)(AsPh(3))(2) has furnished Re(V)OCl(3)(L), 1, from which Re(III)(OPPh(3))Cl(3)(L), 2, and Re(V)(NAr)Cl(3)(L), 3, have been synthesized. Chemical oxidation of 2(R = H) by aqueous H(2)O(2) and of 3(R = H) by dilute HNO(3) has yielded Re(IV)(OPPh(3))Cl(3)(L'), 5, and Re(VI)(NAr)Cl(3)(L'), 4, respectively, where L' is the monoionized iminoacetamide ligand R'N=C(H)-C(=O)-NR'(-). Finally, the reaction of Re(V)O(OEt)X(2)(PPh(3))(2) with L has furnished bivalent species of type Re(II)X(2)(L)(2), 6(X = Cl, Br). The X-ray structures of 1 (R = Me, R' = Ph), 3 (R = H, R' = Ph, Ar = Ph), and 4 (R = H, R' = cycloheptyl, Ar = C(6)H(4)Cl) are reported revealing meridional geometry for the ReCl(3) fragment and triple bonding in the ReO (in 1) and ReNAr (in 3 and 4 ) fragments. The cis geometry (two Re-X stretches) of ReX(2)(L)(2) is consistent with maximized Re(II)-L back-bonding. Both ReX(2)(L)(2) and Re(NAr)Cl(3)(L') are paramagnetic (S = (1)/(2)) and display sextet EPR spectra in solution. The g and A values of Re(NAr)Cl(3)(L') are, respectively, lower and higher than those of ReX(2)(L)(2). All the complexes are electroactive in acetonitrile solution. The Re(NAr)Cl(3)(L) species display the Re(VI)/Re(V) couple near 1.0 V versus SCE, and coulometric studies have revealed that, in the oxidative transformation of 3 to 4, the reactive intermediate is Re(VI)(NAr)Cl(3)(L)(+) which undergoes nucleophilic addition of water at an imine site followed by induced electron transfer finally affording 4. In the structure of 3 (R = H, R' = Ph, Ar = Ph), the Re-N bond lying trans to the chloride ligand is approximately 0.1 A shorter than that lying trans to NPh. It is thus logical that the imine function incorporating the former bond is more polarized and therefore subject to more facile nucleophilic attack by water. This is consistent with the regiospecificity of the imine oxidation as revealed by structure determination of 4 (R = H, R' = cycloheptyl, Ar = C(6)H(4)Cl).
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Affiliation(s)
- Samir Das
- Department of Inorganic Chemistry, Indian Association for the Cultivation of Science, Kolkata 700 032, India
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