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Luminescence of five-coordinated nickel(ii) complexes with substituted-8-hydroxyquinolines and macrocyclic ligands

A series of heteroleptic quinolinolate pentacoordinated nickel(ii) complexes, [Ni(mcN3)(R1,R2,R3-8-hq)](PF6), were synthesized and characterized by spectroscopic methods. Single-crystal X-ray diffraction studies for [(Me3-mcN3)Ni(N,O-2-CN-8-hq)][PF6] (6a), [(Me4-mcN3)Ni(N,O-8-hq)][PF6] (2b) and [(Me... Full description

Journal Title: Dalton Transactions (Print Edition) 0, 2010, Vol.39(7), pp.1797-1806
Main Author: Santana, Mdolores
Other Authors: Garcia-Bueno, Rocio , Garcia, Gabriel , Perez, Jose , Garcia, Luis , Monge, Miguel , Laguna, Antonio
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 1477-9226 ; DOI: 10.1039/B917994A
Link: http://search.proquest.com/docview/1730072589/?pq-origsite=primo
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title: Luminescence of five-coordinated nickel(ii) complexes with substituted-8-hydroxyquinolines and macrocyclic ligands
format: Article
creator:
  • Santana, Mdolores
  • Garcia-Bueno, Rocio
  • Garcia, Gabriel
  • Perez, Jose
  • Garcia, Luis
  • Monge, Miguel
  • Laguna, Antonio
subjects:
  • Deoxygenation
  • Excitation Spectra
  • Macrocyclic Compounds
  • Nickel
  • Solvents
  • Diffraction
  • Electronics
  • Maxima
  • Ligands
  • Miscellaneous Sciences (So)
  • Analysis (MD)
  • Chemical Analysis (Ep)
  • Chemical Analysis (Ed)
  • Chemical Analysis (EC)
  • Theoretical (General) (Ea)
ispartof: Dalton Transactions (Print Edition), 0, 2010, Vol.39(7), pp.1797-1806
description: A series of heteroleptic quinolinolate pentacoordinated nickel(ii) complexes, [Ni(mcN3)(R1,R2,R3-8-hq)](PF6), were synthesized and characterized by spectroscopic methods. Single-crystal X-ray diffraction studies for [(Me3-mcN3)Ni(N,O-2-CN-8-hq)][PF6] (6a), [(Me4-mcN3)Ni(N,O-8-hq)][PF6] (2b) and [(Me4-mcN3)Ni(N,O-5,7-I2-8-hq)][PF6] (5b) indicate that these complexes consist of a square-pyramidal ligand arrangement containing one chelating quinolinolate and one macrocyclic ligand (mcN3). Variation of the substituents on quinolinolate ligands imposes obvious electronic or structural effects on the nickel atom. These chromophores absorb moderately in the visible region and emit in the yellowish-green spectral region from a quinolinolate-centered intraligand charge-transfer excited state. The emission maxima are in the range 520-548 nm, with quantum yields between 0.11 and 1.63%, in deoxygenated organic solvents at room temperature. TD-DFT calculations allow exploration...
language: eng
source:
identifier: ISSN: 1477-9226 ; DOI: 10.1039/B917994A
fulltext: fulltext
issn:
  • 14779226
  • 1477-9226
url: Link


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titleLuminescence of five-coordinated nickel(ii) complexes with substituted-8-hydroxyquinolines and macrocyclic ligands
creatorSantana, Mdolores ; Garcia-Bueno, Rocio ; Garcia, Gabriel ; Perez, Jose ; Garcia, Luis ; Monge, Miguel ; Laguna, Antonio
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ispartofDalton Transactions (Print Edition), 0, 2010, Vol.39(7), pp.1797-1806
identifierISSN: 1477-9226 ; DOI: 10.1039/B917994A
subjectDeoxygenation ; Excitation Spectra ; Macrocyclic Compounds ; Nickel ; Solvents ; Diffraction ; Electronics ; Maxima ; Ligands ; Miscellaneous Sciences (So) ; Analysis (MD) ; Chemical Analysis (Ep) ; Chemical Analysis (Ed) ; Chemical Analysis (EC) ; Theoretical (General) (Ea)
descriptionA series of heteroleptic quinolinolate pentacoordinated nickel(ii) complexes, [Ni(mcN3)(R1,R2,R3-8-hq)](PF6), were synthesized and characterized by spectroscopic methods. Single-crystal X-ray diffraction studies for [(Me3-mcN3)Ni(N,O-2-CN-8-hq)][PF6] (6a), [(Me4-mcN3)Ni(N,O-8-hq)][PF6] (2b) and [(Me4-mcN3)Ni(N,O-5,7-I2-8-hq)][PF6] (5b) indicate that these complexes consist of a square-pyramidal ligand arrangement containing one chelating quinolinolate and one macrocyclic ligand (mcN3). Variation of the substituents on quinolinolate ligands imposes obvious electronic or structural effects on the nickel atom. These chromophores absorb moderately in the visible region and emit in the yellowish-green spectral region from a quinolinolate-centered intraligand charge-transfer excited state. The emission maxima are in the range 520-548 nm, with quantum yields between 0.11 and 1.63%, in deoxygenated organic solvents at room temperature. TD-DFT calculations allow exploration...
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titleLuminescence of five-coordinated nickel(ii) complexes with substituted-8-hydroxyquinolines and macrocyclic ligands
descriptionA series of heteroleptic quinolinolate pentacoordinated nickel(ii) complexes, [Ni(mcN3)(R1,R2,R3-8-hq)](PF6), were synthesized and characterized by spectroscopic methods. Single-crystal X-ray diffraction studies for [(Me3-mcN3)Ni(N,O-2-CN-8-hq)][PF6] (6a), [(Me4-mcN3)Ni(N,O-8-hq)][PF6] (2b) and [(Me4-mcN3)Ni(N,O-5,7-I2-8-hq)][PF6] (5b) indicate that these complexes consist of a square-pyramidal ligand arrangement containing one chelating quinolinolate and one macrocyclic ligand (mcN3). Variation of the substituents on quinolinolate ligands imposes obvious electronic or structural effects on the nickel atom. These chromophores absorb moderately in the visible region and emit in the yellowish-green spectral region from a quinolinolate-centered intraligand charge-transfer excited state. The emission maxima are in the range 520-548 nm, with quantum yields between 0.11 and 1.63%, in deoxygenated organic solvents at room temperature. TD-DFT calculations allow exploration...
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titleLuminescence of five-coordinated nickel(ii) complexes with substituted-8-hydroxyquinolines and macrocyclic ligands
authorSantana, Mdolores ; Garcia-Bueno, Rocio ; Garcia, Gabriel ; Perez, Jose ; Garcia, Luis ; Monge, Miguel ; Laguna, Antonio
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5Diffraction
6Electronics
7Maxima
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abstractA series of heteroleptic quinolinolate pentacoordinated nickel(ii) complexes, [Ni(mcN3)(R1,R2,R3-8-hq)](PF6), were synthesized and characterized by spectroscopic methods. Single-crystal X-ray diffraction studies for [(Me3-mcN3)Ni(N,O-2-CN-8-hq)][PF6] (6a), [(Me4-mcN3)Ni(N,O-8-hq)][PF6] (2b) and [(Me4-mcN3)Ni(N,O-5,7-I2-8-hq)][PF6] (5b) indicate that these complexes consist of a square-pyramidal ligand arrangement containing one chelating quinolinolate and one macrocyclic ligand (mcN3). Variation of the substituents on quinolinolate ligands imposes obvious electronic or structural effects on the nickel atom. These chromophores absorb moderately in the visible region and emit in the yellowish-green spectral region from a quinolinolate-centered intraligand charge-transfer excited state. The emission maxima are in the range 520-548 nm, with quantum yields between 0.11 and 1.63%, in deoxygenated organic solvents at room temperature. TD-DFT calculations allow exploration...
doi10.1039/b917994a
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date2010-01-01