Heterometallic complexes derived from ruthenocene-functionalized dipyrromethenes

Malachowski, Mitchell R.; Grau, Michelle F.; Thomas, Jordan M.; Rheingold, Arnold L.; Moore, Curtis E.

doi:10.1016/j.ica.2010.08.020

Cited by 3 publications

(5 citation statements)

References 36 publications

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“…13 C NMR spectra of 1 and 2 exhibited an analogous pattern of resonances and strongly supported proposed formulations. Most significant resonances associated with S 2 – C ... NR 2 carbon in these complexes resonated at 202.08 ( 1 ) and 201.22 ppm ( 2 ), which is consistent with earlier reports. ,, Overall NMR spectral data corroborated well with proposed formulation of the complexes.…”

Section: Results and Discussionsupporting

confidence: 91%

“…The bidentate coordination of dtc moiety was evidenced by the presence of only one unsplitted intense band due to νC–S for 1 and 2 at ∼1031 and 1033 cm –1 , respectively . In addition, vibrations associated with C ... N ( pyrrol ) for coordinated 4-pydpm appeared as splitted band at 1507 ( 1 ) and 1510 cm –1 ( 2 ). , …”

Section: Results and Discussionmentioning

confidence: 98%

“…The α and β protons related to the dedtc in 1 [N-(C H 2 ) 2 (CH 3 ) 2 ; N-(CH 2 ) 2 (C H 3 ) 2 ] displayed downfield shift of ∼0.02 ppm [∼3.66, 1.27 ppm]. Likewise, the protons for dipdtc in 2 resonated at almost their usual position [∼1.51, 1.27 ppm, 2 ]. ,, A small shift in the position of resonances due to both 4-pydpm and dtc protons may be ascribed to the formation of respective complexes. 13 C NMR spectra of 1 and 2 exhibited an analogous pattern of resonances and strongly supported proposed formulations.…”

Section: Results and Discussionmentioning

confidence: 99%

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Size-Controlled Synthesis of Ag Nanoparticles Functionalized by Heteroleptic Dipyrrinato Complexes Havingmeso-Pyridyl Substituents and Their Catalytic Applications

Gupta

Dubey

et al. 2015

Inorg. Chem.

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The syntheses of heteroleptic dipyrrinato nickel(II) complexes [Ni(4-pydpm)(dedtc)] (1) and [Ni(4-pydpm)(dipdtc)] (2) [4-pydpm = 5-(4-pyridyl)dipyrromethene; dedtc = diethyldithiocarabamate; and dipdtc = diisopropyldithiocarbamate] and the thorough characterization of these complexes by satisfactory elemental analyses, electrospray ionization mass spectrometry, Fourier-transform infrared, NMR ((1)H, (13)C), and UV-vis spectroscopies, and electrochemical studies was achieved. Structure of 1 was authenticated by X-ray single-crystal analysis. Both the complexes 1 and 2 were successfully utilized as a capping agent in the preparation of silver nanoparticles. Availability of free pyridyl nitrogen on the dipyrrin core of these complexes was meticulously exploited in functionalization and stabilization of the silver nanoparticles (AgNPs). Morphological and structural investigations on colloidal nanoparticles were followed by UV-vis spectroscopy and transmission electron microscopy (TEM). Overall results revealed that average size of the silver nanoparticles (∼10, 15, 20 nm, and aggregation) is strongly influenced by ratio of Ag/[1/2] (03, 06, 10, 20). Correlation between particle size and capping agents was realized by UV-vis and TEM studies. Catalytic activity of the AgNPs obtained through this route was successfully employed in the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). It was established that reduction process follows a pseudo-first-order kinetics.

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Section: Results and Discussionsupporting

confidence: 91%

Section: Results and Discussionmentioning

confidence: 98%

Section: Results and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Size-Controlled Synthesis of Ag Nanoparticles Functionalized by Heteroleptic Dipyrrinato Complexes Havingmeso-Pyridyl Substituents and Their Catalytic Applications

Gupta

Dubey

et al. 2015

Inorg. Chem.

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“…The α, β, γ, and δ protons of 3 and 6 resonated at ∼3.56, 1.64, 1.38, and 0.96 ppm, respectively (Figures S1a–S6a, Supporting Information). ,, Markedly, the protons corresponding to 2 and 3 exhibited negligible shift relative to their precursor complexes like those of 1 and 4 . 13 C NMR spectra of 1 – 6 displayed an analogous pattern of resonances and supported proposed formulations.…”

Section: Resultsmentioning

confidence: 94%

“…The appearance of unsplit bands due to νC ... N and νC–S supported the bidentate coordination of dtc . νC ... N of coordinated fcdpm vibrated as split bands at 1507 ( 1 ), 1510 ( 2 ), 1509 ( 3 ), 1519 ( 4 ), 1521 ( 5 ), and 1520 ( 6 ) cm –1 . , …”

Section: Resultsmentioning

confidence: 99%

Heteroleptic Dipyrrinato Complexes Containing 5-Ferrocenyldipyrromethene and Dithiocarbamates as Coligands: Selective Chromogenic and Redox Probes

et al. 2012

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Six heteroleptic dipyrrinato complexes [Ni(fcdpm)(dedtc)] (1), [Ni(fcdpm)(dipdtc)] (2), [Ni(fcdpm)(dbdtc)] (3), [Pd(fcdpm)(dedtc)] (4), [Pd(fcdpm)(dipdtc)] (5), and [Pd(fcdpm)(dbdtc)] (6) (fcdpm = 5-ferrocenyldipyrromethene; dedtc = diethyldithiocarbamate; dipdtc = diisopropyldithiocarbamate; dbdtc = dibutyldithiocarbamate) have been synthesized and characterized by elemental analyses and spectral (ESI-MS, IR, (1)H, (13)C NMR, UV-vis) and electrochemical studies. Crystal structures of 1, 2, 4, and 5 have been authenticated by X-ray single-crystal analyses. Nickel-based complexes 1-3 display selective chromogenic and redox sensing for Hg(2+) and Pb(2+) ions, while palladium complexes 4-6 display selective chromogenic and redox sensing only for Hg(2+). Electronic absorption, ESI-MS, and electrochemical studies indicated that sensing arises from interaction between 1-3 and Hg(2+)/Pb(2+) through sulfur of the coordinated dithiocarbamates, while it arises from the pyrrolic nitrogen of fcdpm and dithiocarbamate sulfur from 4-6 and Hg(2+). Different modes of binding between Ni and Pd complexes have further been supported by theoretical studies. The receptor-cation binding constants (K(a)) and stoichiometry between probes and Hg(2+)/Pb(2+) have been estimated by the Benesi-Hildebrand method and Job's plot analysis. Detection limits for 1-3 toward Hg(2+)/Pb(2+) and 4-6 for Hg(2+) have been found to be reasonably high.

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Synthesis of electroactive multinuclear dipyrrinato complexes and Fe(iii) assisted formation of α-alkoxy substituted 5-ferrocenyldipyrromethenes

et al. 2012

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The synthesis and characterization of multinuclear complexes [Pd(acac)(fcdpm)] (1), [Pd(fcdpm)(2)] (2), [Co(acac)(fcdpm)(2)] (3), [Co(fcdpm)(3)] (4) and α-alkoxy derivatives [α-OMe-fcdpm] (5), [α-OEt-fcdpm] (6), [α-OPr(n)-fcdpm] (7) and [α-OBu(n)-fcdpm] (8) (fcdpm = 5-ferrocenyldipyrromethene; acac = acetylacetone) have been described. Formation of alkoxy derivatives 5-8 takes place from highly selective Fe(III) mediated alkoxylation of fcdpm in alcohol. It has been established that yield of α-alkoxy derivatives depend on the alcohol chain length. The compounds under study have been characterized by elemental analyses, spectral (IR, (1)H, (13)C NMR, ESI-MS, UV-vis) and electrochemical studies (CV and DPV). Structures of 1, 3 and 5 have been verified by X-ray single crystal analyses. Structural studies revealed distorted square planar and octahedral geometry about Pd(II) and Co(III) centres. All the compounds exhibited oxidation wave due to Fc/Fc(+) redox couple (0.34-0.36, 1-4; 0.24-0.25 V, 5-8).

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Heterometallic complexes derived from ruthenocene-functionalized dipyrromethenes

Cited by 3 publications

References 36 publications

Size-Controlled Synthesis of Ag Nanoparticles Functionalized by Heteroleptic Dipyrrinato Complexes Havingmeso-Pyridyl Substituents and Their Catalytic Applications

Size-Controlled Synthesis of Ag Nanoparticles Functionalized by Heteroleptic Dipyrrinato Complexes Havingmeso-Pyridyl Substituents and Their Catalytic Applications

Heteroleptic Dipyrrinato Complexes Containing 5-Ferrocenyldipyrromethene and Dithiocarbamates as Coligands: Selective Chromogenic and Redox Probes

Synthesis of electroactive multinuclear dipyrrinato complexes and Fe(iii) assisted formation of α-alkoxy substituted 5-ferrocenyldipyrromethenes

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