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Buravchenko GI, Shchekotikhin AE. Quinoxaline 1,4-Dioxides: Advances in Chemistry and Chemotherapeutic Drug Development. Pharmaceuticals (Basel) 2023; 16:1174. [PMID: 37631089 PMCID: PMC10459860 DOI: 10.3390/ph16081174] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/08/2023] [Accepted: 08/14/2023] [Indexed: 08/27/2023] Open
Abstract
N-Oxides of heterocyclic compounds are the focus of medical chemistry due to their diverse biological properties. The high reactivity and tendency to undergo various rearrangements have piqued the interest of synthetic chemists in heterocycles with N-oxide fragments. Quinoxaline 1,4-dioxides are an example of an important class of heterocyclic N-oxides, whose wide range of biological activity determines the prospects of their practical use in the development of drugs of various pharmaceutical groups. Derivatives from this series have found application in the clinic as antibacterial drugs and are used in agriculture. Quinoxaline 1,4-dioxides present a promising class for the development of new drugs targeting bacterial infections, oncological diseases, malaria, trypanosomiasis, leishmaniasis, and amoebiasis. The review considers the most important methods for the synthesis and key directions in the chemical modification of quinoxaline 1,4-dioxide derivatives, analyzes their biological properties, and evaluates the prospects for the practical application of the most interesting compounds.
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Dong X, Brown AM, Woodside AJ, Robinson JR. N-Oxides amplify catalyst reactivity and isoselectivity in the ring-opening polymerization of rac-β-butyrolactone. Chem Commun (Camb) 2022; 58:2854-2857. [PMID: 35137743 DOI: 10.1039/d1cc05127j] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-Oxides can amplify the performance of a lanthanum aminobisphenolate catalyst in the ring-opening polymerization (ROP) of rac-β-butyrolactone (rac-BBL) to unprecedented levels (TOF/Pm; At RT: 1900 h-1/0.73, At -30 °C: 200 h-1/0.82). Experiments and computations establish donor electronics control catalyst activity, while donor sterics control catalyst deactivation.
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Affiliation(s)
- Xiang Dong
- Department of Chemistry, Brown University, Providence, RI 02912, USA.
| | - Alexander M Brown
- Department of Chemistry, Brown University, Providence, RI 02912, USA.
| | - Audra J Woodside
- Department of Chemistry, Brown University, Providence, RI 02912, USA.
| | - Jerome R Robinson
- Department of Chemistry, Brown University, Providence, RI 02912, USA.
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Najóczki F, Szabó M, Lihi N, Udvardy A, Fábián I. Synthesis and Characterization of 1,10-Phenanthroline-mono- N-oxides. Molecules 2021; 26:molecules26123632. [PMID: 34198594 PMCID: PMC8231831 DOI: 10.3390/molecules26123632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/08/2021] [Accepted: 06/10/2021] [Indexed: 11/16/2022] Open
Abstract
N-oxides of N-heteroaromatic compounds find widespread applications in various fields of chemistry. Although the strictly planar aromatic structure of 1,10-phenanthroline (phen) is expected to induce unique features of the corresponding N-oxides, so far the potential of these compounds has not been explored. In fact, appropriate procedure has not been reported for synthesizing these derivatives of phen. Now, we provide a straightforward method for the synthesis of a series of mono-N-oxides of 1,10-phenanthrolines. The parent compounds were oxidized by a green oxidant, peroxomonosulfate ion in acidic aqueous solution. The products were obtained in high quality and at good to excellent yields. A systematic study reveals a clear-cut correlation between the basicity of the compounds and the electronic effects of the substituents on the aromatic ring. The UV spectra of these compounds were predicted by DFT calculations at the TD-DFT/TPSSh/def2-TZVP level of theory.
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Affiliation(s)
- Ferenc Najóczki
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (F.N.); (M.S.); (N.L.)
- Doctoral School of Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Mária Szabó
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (F.N.); (M.S.); (N.L.)
| | - Norbert Lihi
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (F.N.); (M.S.); (N.L.)
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms Research Group, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
| | - Antal Udvardy
- Department of Physical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary;
| | - István Fábián
- Department of Inorganic and Analytical Chemistry, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (F.N.); (M.S.); (N.L.)
- MTA-DE Homogeneous Catalysis and Reaction Mechanisms Research Group, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
- Correspondence: ; Tel.: +36-52-512-900 (ext. 22378); Fax: +36-52-518-660
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More hydra than Janus – Non-classical coordination modes in complexes of oligopyridine ligands. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.006] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Lu T, Feng SL, Zhu ZM, Sang XJ, Su F, Zhang LC. Four Strandberg-type polyoxometalates with organophosphine centre decorated by transition metal-2,2'-bipy/H2O complexes. J SOLID STATE CHEM 2017. [DOI: 10.1016/j.jssc.2017.05.027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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Najóczki F, Bellér G, Szabó M, Fábián I. Substituent effect on the N-oxidation of 1,10-phenanthroline derivatives by peroxomonosulfate ion. NEW J CHEM 2017. [DOI: 10.1039/c7nj01860f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Both the acidity of a series of substituted 1,10-phenanthrolines and their reactivity towardsN-oxidation are predominantly governed by electronic effects.
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Affiliation(s)
- Ferenc Najóczki
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Egyetem tér 1
- Hungary
| | - Gábor Bellér
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Egyetem tér 1
- Hungary
| | - Mária Szabó
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Egyetem tér 1
- Hungary
| | - István Fábián
- Department of Inorganic and Analytical Chemistry
- University of Debrecen
- Egyetem tér 1
- Hungary
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Moustafa ME, Boyle PD, Puddephatt RJ. Carbon–Hydrogen versus Nitrogen–Oxygen Bond Activation in Reactions of N-Oxide Derivatives of 2,2′-Bipyridine and 1,10-Phenanthroline with a Dimethylplatinum(II) Complex. Organometallics 2014. [DOI: 10.1021/om500712e] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Mohamed E. Moustafa
- Department
of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7
- Department
of Chemistry, Faculty of Education, Suez Canal University, Arish, Egypt
| | - Paul D. Boyle
- Department
of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7
| | - Richard J. Puddephatt
- Department
of Chemistry, University of Western Ontario, London, Ontario, Canada N6A 5B7
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Chen Y, Zhang H. Complexation facilitated reduction of aromatic N-oxides by aqueous Fe(II)-tiron complex: reaction kinetics and mechanisms. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:11023-31. [PMID: 23957215 DOI: 10.1021/es402655a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Rapid reduction of carbadox (CDX), olaquindox and several other aromatic N-oxides were investigated in aqueous solution containing Fe(II) and tiron. Consistent with previous work, the 1:2 Fe(II)-tiron complex, FeL2(6-), is the dominant reactive species as its concentration linearly correlates with the observed rate constant kobs under various conditions. The N-oxides without any side chains were much less reactive, suggesting direct reduction of the N-oxides is slow. UV-vis spectra suggest FeL2(6-) likely forms 5- or 7-membered rings with CDX and olaquindox through the N and O atoms on the side chain. The formed inner-sphere complexes significantly facilitated electron transfer from FeL2(6-) to the N-oxides. Reduction products of the N-oxides were identified by HPLC/QToF-MS to be the deoxygenated analogs. QSAR analysis indicated neither the first electron transfer nor N-O bond cleavage is the rate-limiting step. Calculations of the atomic spin densities of the anionic N-oxides confirmed the extensive delocalization between the aromatic ring and the side chain, suggesting complex formation can significantly affect the reduction kinetics. Our results suggest the complexation facilitated N-oxide reduction by Fe(II)-tiron involves a free radical mechanism, and the subsequent deoxygenation might also benefit from the weak complexation of Fe(II) with the N-oxide O atom.
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Affiliation(s)
- Yiling Chen
- Department of Civil and Environmental Engineering, Temple University , Philadelphia, Pennsylvania 19122, United States
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Thornton DA, Watkins GM. The Infrared Spectra (4000–50 cm−1) of Complexes of 2,2′-Bipyridine-N,N′-Dioxide and its Perdeuterated Analogue with Metal(II) Perchlorates of the First Transition Series. J COORD CHEM 2009. [DOI: 10.1080/00958979209409205] [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]
Affiliation(s)
- D. A. Thornton
- a Department of Chemistry , University of Cape Town , Rondebosch , 7700 , South Africa
| | - G. M. Watkins
- a Department of Chemistry , University of Cape Town , Rondebosch , 7700 , South Africa
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Bartczak TJ, Czakis-sulikowska D, Kałuzna J. SYNTHESIS, CHARACTERIZATION AND CRYSTAL STRUCTURE OF DIAQUADI(ACETATO-O)-BIS(2,4′-BIPYRIDYL) MANGANESE(II). J COORD CHEM 2006. [DOI: 10.1080/00958979808053730] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Tadeusz J. Bartczak
- a X-Ray Crystallography Group, Institute of General and Ecological Chemistry, Technical University , 90-924, Łódź, Poland
| | - Danuta Czakis-sulikowska
- b Coordination Chemistry Group, Institute of General and Ecological Chemistry, Technical University , 90-924, Łódź, Poland
| | - Joanna Kałuzna
- b Coordination Chemistry Group, Institute of General and Ecological Chemistry, Technical University , 90-924, Łódź, Poland
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Hill NJ, Leung LS, Levason W, Webster M. Homoleptic octahedral hexakis(trimethylphosphine oxide)lanthanide hexafluorophosphates, [Ln(Me3PO)6][PF6]3:. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(02)01209-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Kannan S, Usman A, Fun H. Synthesis and characterization of [bis(β-diketonato)uranium(VI)]nitrone compounds. The crystal and molecular structure of [UO2(TTA)2·p-NO2C5H4NO]. Polyhedron 2002. [DOI: 10.1016/s0277-5387(02)01210-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Kanno H, Yamada M, Nakata K, Nishimura M. Conformational inversion of 2,2′-bipyridine 1,1′-dioxide chelate ring in a series of (2,2′,2′′-triaminotriethylamine)(4,4′-disubstituted-2,2′-bipyridine 1,1′-dioxide)cobalt(III) complexes. Inorganica Chim Acta 2001. [DOI: 10.1016/s0020-1693(01)00408-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Anderson RJ, Hagback PH, Steel PJ. X-ray crystal structures of copper(II) nitrate complexes of two isomeric N,O-chelating ligands. Inorganica Chim Acta 1999. [DOI: 10.1016/s0020-1693(98)00252-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hideaki Kanno, Mitsuko Yagi, Shunji Utsuno, Junnosuke Fujita. Isomerization and racemization of (acetylacetonato)bis(4,4′-dimethyl-2,2′-bipyridine 1,1′-dioxide)chromium(III), (acetylacetonato)bis(4,4′-dimethoxy-2,2′-bipyridine 1,1′-dioxide)chromium(III) and (acetylacetonato)bis(4,4′-diethoxy-2,2′-bipyridine 1,1′-dioxide)chromium(III) complexes. Inorganica Chim Acta 1998. [DOI: 10.1016/s0020-1693(98)00151-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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16
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Kanno H, Yano T, Sato K, Utsuno S, Fujita J. Preparation and Stereochemistry of Cobalt(III) Complexes Containing 2,2′-Bipyridine 1,1′-Dioxide. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1997. [DOI: 10.1246/bcsj.70.1085] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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17
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Kanno H, Yamamoto J, Utsuno S, Fujita J. Isomerization and Racemization of the Tris(4,4′-dimethoxy- or 4,4′-diethoxy-2,2′-bipyridine 1,1′-dioxide)chromium(III) Complexes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1996. [DOI: 10.1246/bcsj.69.665] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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18
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Bhawmick R, Bandyopadhyay P. Cyclopalladation and metaloxylation of 1-(phenylazo)-2-hydroxynaphthalene. TRANSIT METAL CHEM 1995. [DOI: 10.1007/bf00139145] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Synthesis and crystal structure of a binuclear zinc(II) complex of 2,6-diformylpyridine N--oxide bis(benzoylhydrazone). Polyhedron 1995. [DOI: 10.1016/0277-5387(94)00269-k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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20
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Dilworth JR, Lewis JS, Miller JR, Zheng Y. The preparation of rhenium(V) oxo and imido complexes with Et2NCSNHCOPh and Et2NCSBC(NH)Ph. The x-ray crystal structure of [ReOCl(PhCONCSNEt2)2]. Polyhedron 1993. [DOI: 10.1016/s0277-5387(00)81630-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Shen JK, Gao YC, Shi QZ, Basolo F. Effect of substituents on amineN-oxides on the rates of O-atom transfer to metal carbonyls. J Organomet Chem 1991. [DOI: 10.1016/0022-328x(91)86227-h] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Some coordination polymers of thorium(IV) with 4,4′-bipyridyl-N,N′-dioxide and 4-ethoxycarbonylaminopyridine-N-oxide. Polyhedron 1991. [DOI: 10.1016/s0277-5387(00)86183-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Yin Z, Xinmin G, Ning T, Minyu T. Preparation and Crystal Structure of Diaquabis(1,8-naphthyridine 1-oxide)cobalt(II) Nitrate. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1989. [DOI: 10.1246/bcsj.62.1279] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Gan X, Tang N, Wang X, Zhu Y, Tan M. Preparation and X-ray crystal structure of bis(1,8-naphthyridine-N-monoxide)copper(II) nitrate. Polyhedron 1989. [DOI: 10.1016/s0277-5387(00)86447-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Kanno H, Fujita J. Isomerization and Racemization of the Tris(2,2′-bipyridineN,N′-dioxide)chromium(III) Complex. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1987. [DOI: 10.1246/bcsj.60.589] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Yadava CL, Tripathi S, Ahuja IS. Coordination polymers of cobalt(II) involving 4,4?-bipyridyl and its dioxide. TRANSIT METAL CHEM 1986. [DOI: 10.1007/bf00620650] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Agarwal RK, Rawat HK, Singh G. Thorium(IV) and Dioxouranium(VI) Complexes of 5,6-Benzoquinoline N-Oxide. ACTA ACUST UNITED AC 1986. [DOI: 10.1080/00945718608071360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Synthesis and x-ray structure of a Hg(II) complex with adenine N(1)-oxide. A model for mercury binding to DNA. Inorganica Chim Acta 1984. [DOI: 10.1016/s0020-1693(00)88156-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Ahuja I, Singh R, Yadava G. Structural information on manganese(II) chloride, thiocyanate, acetate and sulphate complexes with 2,2'-bipyridyl, 4,4'-bipyridyl and their dioxides fr. J Mol Struct 1981. [DOI: 10.1016/0022-2860(81)80015-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Mikulski CM, De Prince R, Tran TB, Karayannis NM. Purine N(1)-oxide complexes with 3d metal perchlorates. Inorganica Chim Acta 1981. [DOI: 10.1016/s0020-1693(00)88543-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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40
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Complexes of some bivalent cobalt, nickel, copper, zinc, cadmium and monovalent silver salts with 4,4?-BipyridylN,N?-dioxide. TRANSIT METAL CHEM 1980. [DOI: 10.1007/bf01396964] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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41
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Agarwal RK, Jain PC, Kapur MV, Sharma MS, Srivastava AK. Thorium(IV) and zirconium(IV) complexes of oxygen donor ligands, part 12. Thorium(IV) complexes of monoN-oxides of 2,2?-bipyridine and 1,10-phenanthroline. TRANSIT METAL CHEM 1980. [DOI: 10.1007/bf01396924] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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42
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Yamamoto Y, Shibahara K, Takei S. Syntheses and Electronic Spectra of 4,4′-Diacetyl-2,2′-isopropylidenedi-8-quinolinol, Its Nickel(II), Copper(II), and Zinc(II) Chelates. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1980. [DOI: 10.1246/bcsj.53.809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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43
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Ahuja I, Singh R, Sriramulu R. Structural information on the uranyl chloride, nitrate, sulphate, acetate and thiocyanate complexes with 4,4′-bipyridyl N,N′-dioxide from their IR spectra. ACTA ACUST UNITED AC 1980. [DOI: 10.1016/0022-1902(80)80099-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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44
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Five and six coordinate complexes of trivalent chromium, manganese and cobalt with tri and tetradentate ligands. ACTA ACUST UNITED AC 1980. [DOI: 10.1016/0022-1902(80)80003-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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45
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46
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47
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3- and 4-Pyridinecarboxylic acidN-oxide complexes with manganese(II), cobalt(II) and nickel(II) chlorides. TRANSIT METAL CHEM 1979. [DOI: 10.1007/bf00623976] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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48
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Kanno H, Kashiwabara K, Fujita J. Preparation and Resolution of a Series of Chromium(III) Complexes Containing 2,2′-BipyridylN,N′-Dioxide and Ethylenediamine. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1979. [DOI: 10.1246/bcsj.52.761] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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49
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Chasan D, Pytlewski L, Owens C, Karayannis N. Phenazine 5,10-dioxide complexes with 3d metal perchlorates. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0022-1902(79)80385-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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50
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Ahuja I, Singh R, Rai C. Structural information on silver(I), zinc(II) and cadmium(II) nitrate complexes with 1,10-phenanthroline, 2,2'-bipyridine and 2,2'-bipyridine N, N'-dioxide from their infrared spectra. J Mol Struct 1978. [DOI: 10.1016/0022-2860(78)87017-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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