51
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Bai D, Wang Y, He M, Gao X, He Y. Structural diversities and gas adsorption properties of a family of rod-packing lanthanide–organic frameworks based on cyclotriphosphazene-functionalized hexacarboxylate derivatives. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00575c] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A family of Ln-MOFs constructed from flexible hexacarboxylate derivatives exhibit substituent-driven structural diversity, and the methoxy-modified one displays the potential for natural gas purification.
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Affiliation(s)
- Dongjie Bai
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Yao Wang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Minghui He
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Xiaoxia Gao
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Yabing He
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- China
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52
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Elmas G, Okumuş A, Cemaloğlu R, Kılıç Z, Çelik SP, Açık L, Tunalı BÇ, Türk M, Çerçi NA, Güzel R, Hökelek T. Phosphorus-nitrogen compounds. part 38. Syntheses, characterizations, cytotoxic, antituberculosis and antimicrobial activities and DNA interactions of spirocyclotetraphosphazenes with bis-ferrocenyl pendant arms. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.10.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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53
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Dasgupta R, Panda A, Pal S, Veetil Muhasina P, De S, Parameswaran P, Khan S. Catalyst free boron carbon bond cleavage and facile formation of five-membered PNBCC heterocycles. Dalton Trans 2017; 46:15190-15194. [PMID: 29068030 DOI: 10.1039/c7dt03565a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The [3 + 2] cycloaddition reaction of phosphanyl aminoborane [N(2,6-iPr2C6H3)(PPh2)(BCy2)] (1) with activated alkynes led to boron and phosphorus containing five-membered heterocycles [(2,6-iPr2C6H3)NPPh2(CO2R)C-C(Cy)(CO2R)(BCy)] [R = Me (2), Et (3) and H (4)] with facile cleavage of the B-C bond and concomitant formation of a P-C bond with an ylidic character. DFT calculations indicate that 1 can be considered as a non-conjugated 1,3-dipole having two reaction centers viz., a nucleophilic P-center and an electrophilic B-center. The reaction of 1 with the alkynes proceeds through a stepwise dipolar addition mechanism, followed by the migration of the cyclohexyl group from the B-atom to the adjacent C-atom.
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Affiliation(s)
- Rajarshi Dasgupta
- Indian Institute of Science Education and Research Pune, Dr. Homi Bhaba Road, Pashan, Pune - 411008, India.
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54
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Wang L, Ye Y, Lykourinou V, Yang J, Angerhofer A, Zhao Y, Ming L. Catalytic Cooperativity, Nuclearity, and O
2
/H
2
O
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Specificity of Multi‐Copper(II) Complexes of Cyclen‐Tethered Cyclotriphosphazene Ligands in Aqueous Media. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700811] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Le Wang
- College of Chemistry and Chemical Engineering Shanghai University of Engineering Science 201620 Shanghai People's Republic of China
- College of Chemistry and Molecular Engineering Zhengzhou University 450001 Zhengzhou People's Republic of China
- Department of Chemistry University of South Florida 33620‐5250 Tampa FL USA
| | - Yong Ye
- College of Chemistry and Molecular Engineering Zhengzhou University 450001 Zhengzhou People's Republic of China
| | | | - Junliang Yang
- College of Chemistry and Molecular Engineering Zhengzhou University 450001 Zhengzhou People's Republic of China
| | | | - Yufen Zhao
- College of Chemistry and Molecular Engineering Zhengzhou University 450001 Zhengzhou People's Republic of China
- Department of Chemical Biology Xiamen University 361005 Xiamen People's Republic of China
| | - Li‐June Ming
- Department of Chemistry University of South Florida 33620‐5250 Tampa FL USA
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55
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New dispiro-dipyridyloxy -cyclotriphosphazene ligand and its Ag(I) coordination polymer: Structure and thermal stability. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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56
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Şenkuytu E, Eçik ET. Novel fully-BODIPY functionalized cyclotetraphosphazene photosensitizers having high singlet oxygen quantum yields. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 182:26-31. [PMID: 28390249 DOI: 10.1016/j.saa.2017.03.065] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Revised: 03/30/2017] [Accepted: 03/30/2017] [Indexed: 06/07/2023]
Affiliation(s)
- Elif Şenkuytu
- Department of Chemistry, Gebze Technical University, Gebze 41400, Kocaeli, Turkey
| | - Esra Tanrıverdi Eçik
- Department of Chemistry, Gebze Technical University, Gebze 41400, Kocaeli, Turkey.
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57
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Davarcı D, Zorlu Y. Group 12 metal coordination polymers built on a flexible hexakis(3-pyridyloxy)cyclotriphosphazene ligand: Effect of the central metal ions on the construction of coordination polymers. Polyhedron 2017. [DOI: 10.1016/j.poly.2017.01.040] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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58
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Synthesis, structural and thermal properties of the hexapyrrolidinocyclotriphosphazenes-based protic molten salts: Antiproliferative effects against HT29, HeLa, and C6 cancer cell lines. J Mol Liq 2017. [DOI: 10.1016/j.molliq.2017.01.067] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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59
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OKUMUŞ A, ELMAS G, KILIÇ Z, RAMAZANOĞLU N, AÇIK L, TÜRK M, AKÇA G. The reactions of N$_{3}$P$_{3}$Cl$_{6}$ with monodentate and bidentate ligands: the syntheses and structural characterizations, in vitro antimicrobial activities, and DNA interactions of 4-fluorobenzyl(N/O)spirocyclotriphosphazenes. Turk J Chem 2017. [DOI: 10.3906/kim-1612-80] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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60
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The reaction of N,N-spiro bridged octachlorobis(cyclotriphosphazene) with 1,3-propanediol: Comparison with 1,2-ethanediol. Polyhedron 2017. [DOI: 10.1016/j.poly.2016.10.040] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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61
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Elmas G, Okumuş A, Sevinç P, Kılıç Z, Açık L, Atalan M, Türk M, Deniz G, Hökelek T. Phosphorus–nitrogen compounds. Part 37. Syntheses and structural characterizations, biological activities of mono and bis(4-fluorobenzyl)spirocyclotetraphosphazenes. NEW J CHEM 2017. [DOI: 10.1039/c7nj00478h] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The syntheses, spectroscopic and crystallographic properties, in vitro cytotoxic and antimicrobial activities of the cyclotetraphosphazenes were investigated.
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Affiliation(s)
- Gamze Elmas
- Department of Chemistry
- Ankara University
- 06100 Ankara
- Turkey
| | - Aytuğ Okumuş
- Department of Chemistry
- Ankara University
- 06100 Ankara
- Turkey
| | - Pelin Sevinç
- Department of Chemistry
- Ankara University
- 06100 Ankara
- Turkey
| | - Zeynel Kılıç
- Department of Chemistry
- Ankara University
- 06100 Ankara
- Turkey
| | - Leyla Açık
- Department of Biology
- Gazi University
- 06500 Ankara
- Turkey
| | | | - Mustafa Türk
- Department of Bioengineering
- Kırıkkale University
- 71450 Yahşihan-Kırıkkale
- Turkey
| | - Gökberk Deniz
- Faculty of Medicine
- Hacettepe University
- 06100 Ankara
- Turkey
| | - Tuncer Hökelek
- Department of Physics
- Hacettepe University
- 06800 Ankara
- Turkey
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62
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Bai D, Chen F, Jiang D, He Y. A rare Pb9 cluster-organic framework constructed from a flexible cyclotriphosphazene-functionalized hexacarboxylate exhibiting selective gas separation. Inorg Chem Front 2017. [DOI: 10.1039/c7qi00289k] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rare Pb9 cluster-based organic framework constructed from a flexible cyclotriphosphazene-functionalized hexacarboxylate exhibits selective adsorption separation of C2 hydrocarbons and CO2 from CH4 under ambient conditions.
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Affiliation(s)
- Dongjie Bai
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Fengli Chen
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Donghao Jiang
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- China
| | - Yabing He
- College of Chemistry and Life Sciences
- Zhejiang Normal University
- Jinhua 321004
- China
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63
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Uslu A, Tümay SO, Şenocak A, Yuksel F, Özcan E, Yeşilot S. Imidazole/benzimidazole-modified cyclotriphosphazenes as highly selective fluorescent probes for Cu2+: synthesis, configurational isomers, and crystal structures. Dalton Trans 2017; 46:9140-9156. [DOI: 10.1039/c7dt01134b] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a comprehensive work and discuss the fluoroprobe properties of synthesized compounds for copper ion detection with a stereochemical approach using X-ray crystallographic analysis results.
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Affiliation(s)
- Aylin Uslu
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | | | - Ahmet Şenocak
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | - Fatma Yuksel
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | - Elif Özcan
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
| | - Serkan Yeşilot
- Department of Chemistry
- Gebze Technical University
- Kocaeli
- Turkey
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64
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Cyclotriphosphazene, an old compound applied to the synthesis of smart dendrimers with tailored properties. PURE APPL CHEM 2016. [DOI: 10.1515/pac-2016-0711] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe versatile reactivity of hexachlorocyclotriphosphazene (N3P3Cl6) has been developed for the synthesis of specifically engineered dendrimers. Dendrimers are hyperbranched macromolecules built by concentric layers constituted of associated monomeric units. Many of the properties of dendrimers depend on the type of their surface (terminal) functions, which are generally all identical. For some specific purposes, it is desirable to have one function that is different at the level of the core. Hexachlorocyclotriphosphazene offers the possibility to differentiate the reactivity of one (or more) Cl from the others, for producing specifically engineered dendritic tools. These specific reactions on N3P3Cl6 have produced highly dense dendrimers, Janus dendrimers (two faces), tools for functionalizing materials, with uses as catalysts, as chemical sensors, for trapping CO2, for the culture of cells, or for imaging biological events. These properties will be emphasized in this review.
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65
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Beşli S, Mutlu Balcı C, Cantürk H, Doğan S, Yuksel F, Allen CW. Unexpected Ring Expansion of a Four-Membered Cyclophosphazane. Inorg Chem 2016; 55:7832-4. [DOI: 10.1021/acs.inorgchem.6b01533] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Serap Beşli
- Department of Chemistry, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey
| | - Ceylan Mutlu Balcı
- Department of Chemistry, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey
| | - Hakan Cantürk
- Department of Chemistry, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey
| | - Semih Doğan
- Department of Chemistry, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey
| | - Fatma Yuksel
- Department of Chemistry, Gebze Technical University, 41400 Gebze, Kocaeli, Turkey
| | - Christopher W. Allen
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405-0125, United States
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66
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Işıklan M, Yıldırım EK, Atiş M, Sonkaya Ö, Çoşut B. Structural and computational characterization of 4′,4′,6′,6′-tetrachloro-3-(2-methoxyethyl)-3H,4H-spiro-1,3,2-benzoxaza phosphinine-2,2′- [1,3,5,2,4,6] triazatriphosphinine. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.03.085] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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67
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Yenilmez Çiftçi G, Eker Y, Şenkuytu E, Yuksel F. Structural and fluorescence properties of the 2,2′-methylenediphenoxy and 1,1′-methylenedi-2-naphthoxy cyclotriphosphazene derivatives. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.03.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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68
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Davarcı D, Gür R, Beşli S, Şenkuytu E, Zorlu Y. Silver(I) coordination polymers assembled from flexible cyclotriphosphazene ligand: structures, topologies and investigation of the counteranion effects. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS 2016; 72:344-56. [DOI: 10.1107/s2052520616002663] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 02/15/2016] [Indexed: 11/10/2022]
Abstract
The reactions of a flexible ligand hexakis(3-pyridyloxy)cyclotriphosphazene (HPCP) with a variety of silver(I) salts (AgX;X= NO3−, PF6−, ClO4−, CH3PhSO3−, BF4−and CF3SO3−) afforded six silver(I) coordination polymers, namely {[Ag2(HPCP)]·(NO3)2·H2O}n(1), {[Ag2(HPCP)(CH3CN)]·(PF6)2}n(2), {[Ag2(HPCP)(CH3CN)]·(ClO4)2}n(3), [Ag3(HPCP)(CH3PhSO3)3]n(4), [Ag2(HPCP)(CH3CN)(BF4)2]n(5) and {[Ag(HPCP)]·(CF3SO3)}n(6). All of the isolated crystalline compounds were structurally determined by X-ray crystallography. Changing the counteranions in the reactions, which were conducted under similar conditions ofM/Lratio (1:1), temperature and solvent, resulted in structures with different types of topologies. In complexes (1)–(6), the ligand HPCP shows different coordination modes with AgIions giving two-dimensional layered structures and three-dimensional frameworks with different topologies. Complex (1) displays a new three-dimensional framework adopting a (3,3,6)-connected 3-nodal net with point symbol {4.62}2{42.610.83}. Complexes (2) and (3) are isomorphous and have a two-dimensional layered structure showing the same 3,6L60 topology with point symbol {4.26}2{48.66.8}. Complex (4) is a two-dimensional structure incorporating short Ag...Ag argentophilic interactions and has a uninodal 4-connectedsql/Shubnikov tetragonal plane net with {44.62} topology. Complex (5) exhibits a novel three-dimensional framework and more suprisingly contains twofold interpenetrated honeycomb-like networks, in which the single net has a trinodal (2,3,5)-connected 3-nodal net with point symbol {63.86.12}{63}{8}. Complex (6) crystallizes in a trigonal crystal system with the space group R\bar 3 and possesses a three-dimensional polymeric structure showing a binodal (4,6)-connectedfshnet with the point symbol (43.63)2.(46.66.83). The effect of the counteranions on the formation of coordination polymers is discussed in this study.
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69
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Okumuş A, Elmas G, Cemaloğlu R, Aydın B, Binici A, Şimşek H, Açık L, Türk M, Güzel R, Kılıç Z, Hökelek T. Phosphorus–nitrogen compounds. Part 35. Syntheses, spectroscopic and electrochemical properties, and antituberculosis, antimicrobial and cytotoxic activities of mono-ferrocenyl-spirocyclotetraphosphazenes. NEW J CHEM 2016. [DOI: 10.1039/c6nj00204h] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The syntheses, in vitro antituberculosis and cytotoxic activities of cyclotetraphosphazenes were investigated.
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Affiliation(s)
- Aytuğ Okumuş
- Department of Chemistry
- Ankara University
- 06100 Ankara
- Turkey
| | - Gamze Elmas
- Department of Chemistry
- Ankara University
- 06100 Ankara
- Turkey
| | | | - Betül Aydın
- Department of Biology
- Gazi University
- 06500 Ankara
- Turkey
| | - Arzu Binici
- Public Health Institution of Turkey
- 06100 Ankara
- Turkey
| | - Hülya Şimşek
- Public Health Institution of Turkey
- 06100 Ankara
- Turkey
| | - Leyla Açık
- Department of Biology
- Gazi University
- 06500 Ankara
- Turkey
| | - Mustafa Türk
- Department of Bioengineering
- Kırıkkale University
- 71450 Kırıkkale
- Turkey
| | - Remziye Güzel
- Department of Chemistry
- Dicle University
- Diyarbakır
- Turkey
| | - Zeynel Kılıç
- Department of Chemistry
- Ankara University
- 06100 Ankara
- Turkey
| | - Tuncer Hökelek
- Department of Physics
- Hacettepe University
- 06800 Ankara
- Turkey
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70
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Asmafiliz N, Kılıç Z, Civan M, Avcı O, Yasemin Gönder (née Koç) L, Açık L, Aydın B, Türk M, Hökelek T. Phosphorus–nitrogen compounds. Part 36. Syntheses, Langmuir–Blodgett thin films and biological activities of spiro-bino-spiro trimeric phosphazenes. NEW J CHEM 2016. [DOI: 10.1039/c6nj02052f] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The syntheses, spectroscopic and crystallographic properties, LB films, antimicrobial and cytotoxic activities of spiro-bino-spiro phosphazenes were investigated.
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Affiliation(s)
| | - Zeynel Kılıç
- Department of Chemistry
- Ankara University
- 06100 Ankara
- Turkey
| | - Mehmet Civan
- Department of Physics
- Hacettepe University
- 06800 Ankara
- Turkey
| | - Orhan Avcı
- Department of Biology
- Gazi University
- 06500 Ankara
- Turkey
| | | | - Leyla Açık
- Department of Biology
- Gazi University
- 06500 Ankara
- Turkey
| | - Betül Aydın
- Department of Biology
- Gazi University
- 06500 Ankara
- Turkey
| | - Mustafa Türk
- The Turkish Sugar Authority
- 06510 Çankaya-Ankara
- Turkey
- Department of Bioengineering
- Kırıkkale University
| | - Tuncer Hökelek
- Department of Physics
- Hacettepe University
- 06800 Ankara
- Turkey
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71
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Suriya Narayanan R, Chandrasekhar V. Molecular, 1D and 2D assemblies from hexakis(3-pyridyloxy)cyclophosphazene containing 20-membered metallamacrocyclic motifs. Dalton Trans 2015; 45:2273-83. [PMID: 26687430 DOI: 10.1039/c5dt03537f] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The coordination behaviour of hexakis(3-pyridyloxy)cyclophosphazene (L) towards divalent metal ions is described. The reaction of L with hydrated metal nitrates afforded [{N3P3(O-C5H4N-3)6}2{Zn(H2O)3(NO3)}2{Zn(H2O)2(NO3)}2]n[NO3]2n·4nH2O·nCH3OH (1), [{N3P3(O-C5H4N-3)6}2{Zn(H2O)3(NO3)}2{Cu(NO3)}2]n[NO3]2n·4nH2O·nCH3CN (2), [{N3P3(O-C5H4N-3)6}2{(NO3)Cd-(μ-(NO3)-Cd(NO3)2(μ-(NO3)Cd(NO3)}]n·2nCH3OH·3nH2O (3), and [{N3P3(O-C5H4N-3)6}2{Cd(H2O)3(NO3)}2][NO3]2·9H2O (4). 1 and 2 are one-dimensional coordination polymers while 3 is a two-dimensional coordination polymer. On the other hand 4 is a molecular metallamacrocycle. A common feature of 1-4 is the presence of a 20-membered dimetallamacrocyclic motif constructed through the involvement of a pair of cyclophosphazene ligands through their geminal pyridyloxy substituents. The P-N bond distances in L and its metal complexes 1-4 are nearly the same indicating the flexible nature of the coordination pyridyloxy arms present on the cyclophosphazene scaffold.
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72
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Caminade AM, Hameau A, Majoral JP. The specific functionalization of cyclotriphosphazene for the synthesis of smart dendrimers. Dalton Trans 2015; 45:1810-22. [PMID: 26525036 DOI: 10.1039/c5dt03047a] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Hexachlorocyclotriphosphazene is an old compound which affords very new properties in the field of dendrimers. Indeed, it can be used as a branching point for the rapid synthesis of highly dense dendrimers, but also for the synthesis of dendrimers having precisely one function different from all the others. These types of dendrimers are useful in the field of materials, affording highly reusable catalysts, chemical sensors, or supports for cell cultures. However, the most developed uses concern fluorescence. These dendrimers have been used for in vivo imaging, and for trying to elucidate biological mechanisms, in particular for anti-inflammatory dendrimers. This review will display important examples in the field.
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Affiliation(s)
- Anne-Marie Caminade
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, BP 44099, F-31077 Toulouse Cedex 4, France.
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73
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Ansa versus spiro selectivity in substitution reactions of a mono ansa fluorodioxycyclotriphosphazene derivative with diols. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.07.025] [Citation(s) in RCA: 4] [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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74
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Şenkuytu E, Tanrıverdi Eçik E, Durmuş M, Yenilmez Çiftçi G. Monofunctional amines substituted fluorenylidene bridged cyclotriphosphazenes: ‘Turn-off’ fluorescence chemosensors for Cu2+ and Fe3+ ions. Polyhedron 2015. [DOI: 10.1016/j.poly.2015.09.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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75
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Okumuş A, Akbaş H, Kılıç Z, Yasemin Koç L, Açık L, Aydın B, Türk M, Hökelek T, Dal H. Phosphorus–nitrogen compounds part 33: in vitro cytotoxic and antimicrobial activities, DNA interactions, syntheses, and structural investigations of new mono(4-nitrobenzyl)spirocyclotriphosphazenes. RESEARCH ON CHEMICAL INTERMEDIATES 2015. [DOI: 10.1007/s11164-015-2271-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Beşli S, Mutlu C, İbişoğlu H, Yuksel F, Allen CW. Synthesis of a New Class of Fused Cyclotetraphosphazene Ring Systems. Inorg Chem 2014; 54:334-41. [DOI: 10.1021/ic5025235] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Serap Beşli
- Department of Chemistry, Gebze Technical University, 41400 Gebze-Kocaeli, Turkey
| | - Ceylan Mutlu
- Department of Chemistry, Gebze Technical University, 41400 Gebze-Kocaeli, Turkey
| | - Hanife İbişoğlu
- Department of Chemistry, Gebze Technical University, 41400 Gebze-Kocaeli, Turkey
| | - Fatma Yuksel
- Department of Chemistry, Gebze Technical University, 41400 Gebze-Kocaeli, Turkey
| | - Christopher W. Allen
- Department of Chemistry, University of Vermont, Burlington, Vermont 05405-0125, United States
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79
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Yenilmez Çiftçi G, Şenkuytu E, Durmuş M, Yuksel F, Kılıç A. Structural and fluorescence properties of 2-naphthylamine substituted cyclotriphosphazenes. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2014.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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80
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Kumar D, Singh N, Elias AJ, Malik P, Allen CW. Reactions of alkyne- and butadiyne-derived fluorinated cyclophosphazenes with diiron and dimolybdenum carbonyls. Inorg Chem 2014; 53:10674-84. [PMID: 25211189 DOI: 10.1021/ic501821v] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction of (β-phenylethynyl)pentafluorocyclotriphosphazene, [(PhC≡C)(F)PN](PNF2)2, with Fe2(CO)9 in refluxing hexane resulted in five new compounds, namely, [Fe(CO)2{η(2):η(2)-2,4-(P3N3F5)2Ph2C4Fe(CO)3}-μ-CO] (1), [Fe(CO)2{η(2):η(2)-2,5-(P3N3F5)2Ph2C4Fe(CO)3}-μ-CO] (2), [Fe(CO)2{η(5)-2,5-(P3N3F5)2Ph2C4CO}C(Ph)═C(P3N3F5)](3), [Fe(CO)3{η(2):η(2)-2,4-(P3N3F5)2Ph2C4CO] (4), and [Fe(CO)3{η(2):η(2)-2,5-(P3N3F5)2Ph2C4CO] (5). While compounds 1, 2, 4, and 5 have five-membered ferracyclopentadiene or cyclopentadienone rings coordinated to the Fe(CO)3 unit in the η(2):η(2) mode, compound 3 has a 2,5-cyclopentadienone ring attached to an Fe(CO)2(P3N3F5)C═C(Ph) unit, where Fe is η(5)-bonded to the cyclopentadienone ring, and the carbon that is α to the phenyl unit of the Fe(CO)2(P3N3F5)C═C(Ph) group is σ-bonded to the oxygen atom of the cyclopentadienone ring. Formation of five-membered cyclic compounds having two fluorophosphazene units on the vicinal carbon atoms of C4R2R'2Y rings was not observed in this reaction. No examples of Fe(CO)3-bound cyclobutadiene complexes were also isolated from this reaction. A similar reaction in the presence of trimethylamine N-oxide, NMe3O, was found to proceed at -20 °C with the formation of compounds 4 and 5 only. In contrast to the Fe2(CO)9 reaction, a reaction of alkyne-derived pentafluorocyclotriphosphazenes, [(RC≡C)(F)PN](PNF2)2 [R = Ph, Fe(C5H5)2] with the molybdenum complex Cp(CO)3Mo-Mo(CO)3Cp (Cp = cyclopentadienyl) in refluxing toluene resulted in the simple tetrahedral clusters Cp(CO)2Mo(P3N3F5)C-C(Ph)Mo(CO)2Cp (6) and Cp(CO)2Mo(P3N3F5)C-C(Fc)Mo(CO)2Cp (7) (Fc = ferrocenyl). A similar reaction of Cp(CO)3Mo-Mo(CO)3Cp with butadiyne-derived fluorophosphazenes, [(RC≡C-C≡C)(F)PN](PNF2)2 [R = Ph, Fe(C5H5)2], yielded the tetrahedral clusters Cp(CO)2Mo(P3N3F5)C-C(C≡CPh)Mo(CO)2Cp (8) and Cp(CO)2Mo(P3N3F5)C-C(C≡CFc)Mo(CO)2Cp (9) with the tetrahedral Mo2C2 unit forming exclusively with the alkyne unit of the butadiyne group bound to the cyclophosphazene ring. The crystal structures and infrared spectral data of these molybdenum clusters showed the presence of a semibridging carbonyl on one of the molybdenum units. All new compounds were characterized by IR, NMR [(1)H, (13)C{(1)H}, (31)P{(1)H}, and (19)F{(1)H}] and high-resolution mass spectrometry studies. Compounds 2, 3, 5, and 7-9 were also structurally characterized using single-crystal X-ray diffraction studies.
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Affiliation(s)
- Dheeraj Kumar
- Department of Chemistry, Indian Institute of Technology Delhi , Hauz Khas, New Delhi 110016, India
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81
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Elmas G, Okumuş A, Koç LY, Soltanzade H, Kılıç Z, Hökelek T, Dal H, Açık L, Üstündağ Z, Dündar D, Yavuz M. Phosphorus-nitrogen compounds. Part 29. Syntheses, crystal structures, spectroscopic and stereogenic properties, electrochemical investigations, antituberculosis, antimicrobial and cytotoxic activities and DNA interactions of ansa-spiro-ansa cyclotetraphosphazenes. Eur J Med Chem 2014; 87:662-76. [PMID: 25305333 DOI: 10.1016/j.ejmech.2014.10.005] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 09/29/2014] [Accepted: 10/02/2014] [Indexed: 10/24/2022]
Abstract
A number of novel ansa-spiro-ansa (asa) cyclotetraphosphazenes (1a-5b) was prepared in the range of 63-90 % yields. The structures of the compounds were verified by MS, FTIR, (1)H, (13)C{(1)H} and (31)P{(1)H} NMR, heteronuclear single quantum coherence (HSQC), and heteronuclear multiple-bond correlation (HMBC) techniques. The crystal structures of 1b, 2c and 5a were determined by X-ray crystallography. The compound 2c was analyzed by the changes in the (31)P{(1)H}NMR spectrum in addition of the chiral solvating agent; (R)-(+)-2,2,2-trifluoro-1-(9'-anthryl)-ethanol (CSA), to investigate its stereogenic properties. The result supports that compound 2c was found to be in the racemic mixture. Cyclic voltammetric and chronoamperometric data of the mono-ferrocenyl-spiro-asa-cyclotetraphosphazenes exhibited electrochemically reversible one-electron oxidation of Fe redox centres. The mono-ferrocenyl-spiro-asa compounds (3a-5b) were evaluated for antituberculosis activity against reference strain Mycobacterium tuberculosis H37Rv and M. tuberculosis clinical strain, which is resistant to rifampicin and isoniazid. These compounds appear not to be good candidates for being antituberculosis agents to clinical strains. All of the compounds were screened for antibacterial activities against G(+) and G(-) bacteria, and for antifungal activities against yeast strains. They seem to be more active against Gram positive bacteria than Gram negative. The interactions of the phosphazenes with plasmid DNA and the evaluations for cytotoxic activity against MCF-7 breast cancer cell lines were investigated. The compounds 1b, 2b, 3a and 4a were found to be more effective than Cisplatin against MCF-7 breast cancer cell lines at lower concentrations.
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Affiliation(s)
- Gamze Elmas
- Department of Chemistry, Ankara University, 06100 Ankara, Turkey
| | - Aytuğ Okumuş
- Department of Chemistry, Ankara University, 06100 Ankara, Turkey
| | - L Yasemin Koç
- Department of Biology, Ankara University, 06100 Ankara, Turkey
| | | | - Zeynel Kılıç
- Department of Chemistry, Ankara University, 06100 Ankara, Turkey.
| | - Tuncer Hökelek
- Department of Physics, Hacettepe University, 06800 Ankara, Turkey
| | - Hakan Dal
- Department of Chemistry, Anadolu University, 26470 Eskişehir, Turkey
| | - Leyla Açık
- Department of Biology, Gazi University, 06500 Ankara, Turkey
| | - Zafer Üstündağ
- Department of Chemistry, Dumlupınar University, 43270 Kütahya, Turkey
| | - Devrim Dündar
- Department of Clinical Microbiology, Kocaeli University, 41380 Kocaeli, Turkey
| | - Makbule Yavuz
- Department of Clinical Microbiology, Kocaeli University, 41380 Kocaeli, Turkey
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82
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Beşli S, Mutlu C, Yuksel F, Kılıç A. Reactions of ansa fluorodioxy cyclotriphosphazene derivatives with phenol. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.07.043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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83
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Kumar D, Elias AJ. Reduction reactions of alkyne and butadiyne derived fluorinated cyclophosphazenes. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.07.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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84
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Biswas R, Keshav K, Kumar D, Elias AJ. Reactions of allylzinc bromide with ethynylferrocene derived fluorinated cyclophosphazenes. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.06.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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85
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Investigation of the structural properties of 2-naphthylamine substituted cyclotetraphosphazenes. Polyhedron 2014. [DOI: 10.1016/j.poly.2014.03.062] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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86
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Kumar D, Singh J, Elias AJ. Chiral multidentate oxazoline ligands based on cyclophosphazene cores: synthesis, characterization and complexation studies. Dalton Trans 2014; 43:13899-912. [DOI: 10.1039/c4dt01741b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral oxazoline derivatives of cyclophosphazenes were prepared and their complexation and catalytic studies for the asymmetric rearrangement of trichloroacetimidates to trichloroacetamides have been performed.
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Affiliation(s)
- Dheeraj Kumar
- Department of Chemistry
- Indian Institute of Technology
- Delhi
- New Delhi 110016, India
| | - Jatinder Singh
- Department of Chemistry
- Indian Institute of Technology
- Delhi
- New Delhi 110016, India
| | - Anil J. Elias
- Department of Chemistry
- Indian Institute of Technology
- Delhi
- New Delhi 110016, India
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87
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İbişoğlu H, Beşli S, Yuksel F, Ün İ, Kılıç A. Investigation of nucleophilic substitution pathway for the reactions of 1,4-benzodioxan-6-amine with chlorocyclophosphazenes. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.09.030] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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88
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Kundu S, Mohapatra C, Chandrasekhar V. Cyclophosphazene–organostannoxane hybrid motifs in polymeric and molecular systems. RSC Adv 2014. [DOI: 10.1039/c4ra09371b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synthesis and structural characterization of two hybrid inorganic ring systems that contain interconnected cyclophosphazene–stannoxane motifs are reported.
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Affiliation(s)
- Subrata Kundu
- Department of Chemistry
- Indian Institute of Technology
- Kanpur-208 016, India
| | | | - Vadapalli Chandrasekhar
- Department of Chemistry
- Indian Institute of Technology
- Kanpur-208 016, India
- National Institute of Science Education and Research
- Institute of Physics Campus
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89
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Silah H, Ture S. Synthesis and Structural Characterization of Singly, Doubly, and Triply Bridged Derivatives of Hexachlorocyclotriphosphazene with Bis(2-hydroxyethyl) Ether and 2,2-dimethylpropane-1,3-diol. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2013.807255] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Hulya Silah
- a Faculty of Arts and Sciences, Department of Chemistry , University of Bilecik , Gulumbe Campus , Bilecik , Turkey
| | - Sedat Ture
- a Faculty of Arts and Sciences, Department of Chemistry , University of Bilecik , Gulumbe Campus , Bilecik , Turkey
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90
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Akbaş H, Okumuş A, Kılıç Z, Hökelek T, Süzen Y, Koç LY, Açık L, Celik ZB. Phosphorus-nitrogen compounds part 27. Syntheses, structural characterizations, antimicrobial and cytotoxic activities, and DNA interactions of new phosphazenes bearing secondary amino and pendant (4-fluorobenzyl)spiro groups. Eur J Med Chem 2013; 70:294-307. [PMID: 24161706 DOI: 10.1016/j.ejmech.2013.09.046] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 09/20/2013] [Accepted: 09/28/2013] [Indexed: 11/17/2022]
Abstract
A number of partly (7-9) and fully (10a-12d, Scheme 1) substituted mono(4-fluorobenzyl)spiro cyclotriphosphazenes was prepared. The structures of the compounds were determined by MS, FTIR, 1D and 2D NMR techniques. The crystal structures of 9, 11b and 12b were verified by X-ray diffraction analysis. In vitro cytotoxic activity of the phosphazenes (10a-12d) against HeLa cervical cancer cell lines was evaluated. Compound 12c was found to be the most effective, as it is a cytotoxic reagent that might activate apoptosis by altering mitochondrial membrane potential. Compounds 10b, 11b and 12b showed very good activity against yeast strains Candida tropicalis and Candida albicans. BamHI and HindIII digestion results demonstrate that the compounds (10a-12a, 10b-12b, 10d-12d), and (9, 10c-12c) bind with G/G and A/A nucleotides, respectively.
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Affiliation(s)
- Hüseyin Akbaş
- Department of Chemistry, Gaziosmanpaşa University, 60150 Taşlıçiftlik Kampüsü, Tokat, Turkey
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91
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Tümer Y, Asmafiliz N, Kılıç Z, Hökelek T, Yasemin Koç L, Açık L, Yola ML, Solak AO, Öner Y, Dündar D, Yavuz M. Phosphorus–nitrogen compounds: Part 28. Syntheses, structural characterizations, antimicrobial and cytotoxic activities, and DNA interactions of new phosphazenes bearing vanillinato and pendant ferrocenyl groups. J Mol Struct 2013. [DOI: 10.1016/j.molstruc.2013.06.036] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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92
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Sladojevich F, Fuentes de Arriba ÁL, Ortín I, Yang T, Ferrali A, Paton RS, Dixon DJ. Mechanistic investigations into the enantioselective Conia-ene reaction catalyzed by cinchona-derived amino urea pre-catalysts and Cu(I). Chemistry 2013; 19:14286-95. [PMID: 24009075 DOI: 10.1002/chem.201200832] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 06/29/2013] [Indexed: 11/06/2022]
Abstract
The enantioselective Conia-ene cyclization of alkyne-tethered β-ketoesters is efficiently catalyzed by the combination of cinchona-derived amino-urea pre-catalysts and copper(I) salts. The reaction scope is broad and a series of substrates can be efficiently cyclized with high yields and enantioselectivities. Herein, we present a detailed mechanistic study based on experimental considerations and quantum mechanical calculations. Several variables, such as the nature of the organic pre-catalyst and the metal-ion source, have been thoroughly investigated. Kinetic studies, as well as kinetic isotope effects and deuterium labeling experiments have been used to gain further insights into the mechanism and prove the cooperative nature of the catalytic system. Our studies suggest that the rate-limiting step for the reaction involves the β-ketoester deprotonation and that the active species responsible for the enantiodeterming step is monomeric in amino-urea pre-catalyst. Computational studies provide a quantitative understanding of the observed stereoinduction and identify hydrogen bonding from the urea group as a crucial factor in determining the observed enantioselectivity.
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Affiliation(s)
- Filippo Sladojevich
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA (U.K.)
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93
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Synthesis and structural characterization of the first examples of butadiynyl derived cyclic fluorinated phosphazenes. J Fluor Chem 2013. [DOI: 10.1016/j.jfluchem.2013.05.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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94
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Beşli S, Mutlu C, Yuksel F. Nucleophilic substitution reactions of 10- and 11-membered fluorodioxy ansa cyclotriphosphazene derivatives. Dalton Trans 2013; 42:16709-22. [DOI: 10.1039/c3dt52461b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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95
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Copper(I) and silver(I) complexes of carbaphosphazene-anchored N-heterocyclic carbene ligands. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2012.09.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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96
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Ainscough EW, Brodie AM, Davidson RJ, Jameson GB, Otter CA. Flexible pyridyloxy-substituted cyclotetraphosphazene platforms linked by silver(i). CrystEngComm 2013. [DOI: 10.1039/c3ce40395e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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97
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Li B, Dai X, Meng X, Zhang T, Liu C, Yu K. Temperature-controlled synthesis and luminescent properties of two novel coordination polymers modeled by hexa-carboxylate ligand derived from cyclotriphosphazene. Dalton Trans 2013; 42:2588-93. [DOI: 10.1039/c2dt32431h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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98
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Yu WJ, Chen X, Li J, Li B, Zhang TL, Tao J. Lanthanide coordination polymers with hexa-carboxylate ligands derived from cyclotriphosphazene as bridging linkers: synthesis, thermal and luminescent properties. CrystEngComm 2013. [DOI: 10.1039/c3ce41060a] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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99
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Chandrasekhar V, Suriya Narayanan R. Metalation studies of 3- and 4-pyridyloxycyclophosphazenes: metallamacrocycles to coordination polymers. Dalton Trans 2013; 42:6619-32. [DOI: 10.1039/c3dt33084b] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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100
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Elmas G, Okumuş A, Kılıç Z, Hökelek T, Açık L, Dal H, Ramazanoğlu N, Koç LY. Phosphorus-nitrogen compounds. Part 24. Syntheses, crystal structures, spectroscopic and stereogenic properties, biological activities, and DNA interactions of novel spiro-ansa-spiro- and ansa-spiro-ansa-cyclotetraphosphazenes. Inorg Chem 2012; 51:12841-56. [PMID: 23163803 DOI: 10.1021/ic3017134] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactions of octachlorocyclotetraphosphazene, N(4)P(4)Cl(8), with N(2)O(2) donor-type aminopodands (1a, 1b, 1g, and 1h) afforded two kinds of derivatives, namely, spiro-ansa-spiro (sas) (2a, 2b, 2g, and 2h) and ansa-spiro-ansa (asa) (3a and 3b) phosphazenes. The partly substituted sas phosphazenes (2a and 2b) reacted with excess pyrrolidine and morpholine in tetrahydrofuran to produce the tetrapyrrolidino (2c and 2d) and morpholino (2e and 2f) derivatives. The reactions of the asa phosphazenes (3a and 3b) with excess pyrrolidine and morpholine produced gem-2-trans-6-dichloropyrrolidinophosphazenes (3c and 3d) and -morpholinophosphazenes (3e and 3f). However, the fully substituted products were not obtained in these solvents. In addition, the expected fully substituted compound was not obtained from the reaction of 3a with excess pyrrolidine by standard or microwave-assisted methods. The reaction of the long-chain starting compound (1g) with N(4)P(4)Cl(8) gave sas (2g) and the interesting 2,6-ansa-spiro-bicyclo product (bicyclo-2,6-as; 4g), while the reaction of 1h with N(4)P(4)Cl(8) yielded only sas (2h). The structural investigations of the compounds were verified by elemental analyses, mass spectrometry, Fourier transform infrared, and DEPT, HSQC, HMBC, (1)H, (13)C, and (31)P NMR techniques. The crystal structures of 2b, 3a, 3b, 3e, and 4g were determined by X-ray crystallography. Compounds 2a-2h, 3a-3f, and 4g had two stereogenic P atoms. Compound 3b had one enantiomer according to the Flack parameter, and 3f was a racemic mixture, as shown by chiral high-performance liquid chromatography and chiral-solvating-agent, (R)-(+)-2,2,2-trifluoro-1-(9'-anthryl)ethanol, experiments. Furthermore, compounds 2a, 2c, and 2d exhibited weak antibacterial activity against (G+) bacterium, and 3c and 3d displayed moderate antifungal activity against Candida tropicalis. Gel electrophoresis data demonstrated that 2e, 3c, and 3e promoted the formation of DNA cleavage. The prevention of BamHI digestion by 2a-2f and 3a-3f, except 2b and 2e, disclosed binding with GG nucleotides in DNA.
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Affiliation(s)
- Gamze Elmas
- Department of Chemistry, Ankara University, 06100 Ankara, Turkey
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