Synthesis and Characterization of New Tetradentate Ligands

Harry Chiririwa, Aoyi Ochieng

Research output: Contribution to journalArticle

Abstract

Four new tetradentate ligands [1–4] have been prepared by a 1:2 molar condensation of an aromatic dialdehyde (terephthalaldehyde) with thiophen-2-ylmethanamine, 2-(thiophen-2-yl)ethanamine, pyridin-2-ylmethanamine and 2-(pyridin-2-yl)ethanamine. The ligands were characterised on the basis of their elemental analysis, IR spectroscopies, 1H, 13C NMR, ESI-mass spectrometry and for ligands 1, 2 and 4 also by X-ray diffraction. The crystal structures reveal that the ligands exist as discrete molecules with an average C–N bond distance of 1.2656 Å which is consistent with C=N double bonding.
Original languageEnglish
Pages (from-to)1003-1009
JournalIranian Journal of Science and Technology, Transaction A: Science
Volume41
Issue number4
DOIs
Publication statusPublished - 2017

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Crystal Structure
Mass Spectrometry
Condensation
X-ray Diffraction
ligand
Spectroscopy
Molecules
Synthesis
Ligands
ligands
synthesis
Electrospray Ionization Mass Spectrometry
infrared spectroscopy
crystal structure
X-ray diffraction
X-Ray Diffraction
Mass spectrometry
aromatic compounds
nuclear magnetic resonance
condensation

Cite this

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title = "Synthesis and Characterization of New Tetradentate Ligands",
abstract = "Four new tetradentate ligands [1–4] have been prepared by a 1:2 molar condensation of an aromatic dialdehyde (terephthalaldehyde) with thiophen-2-ylmethanamine, 2-(thiophen-2-yl)ethanamine, pyridin-2-ylmethanamine and 2-(pyridin-2-yl)ethanamine. The ligands were characterised on the basis of their elemental analysis, IR spectroscopies, 1H, 13C NMR, ESI-mass spectrometry and for ligands 1, 2 and 4 also by X-ray diffraction. The crystal structures reveal that the ligands exist as discrete molecules with an average C–N bond distance of 1.2656 {\AA} which is consistent with C=N double bonding.",
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Synthesis and Characterization of New Tetradentate Ligands. / Chiririwa, Harry; Ochieng, Aoyi.

In: Iranian Journal of Science and Technology, Transaction A: Science, Vol. 41, No. 4, 2017, p. 1003-1009.

Research output: Contribution to journalArticle

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T1 - Synthesis and Characterization of New Tetradentate Ligands

AU - Chiririwa, Harry

AU - Ochieng, Aoyi

PY - 2017

Y1 - 2017

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AB - Four new tetradentate ligands [1–4] have been prepared by a 1:2 molar condensation of an aromatic dialdehyde (terephthalaldehyde) with thiophen-2-ylmethanamine, 2-(thiophen-2-yl)ethanamine, pyridin-2-ylmethanamine and 2-(pyridin-2-yl)ethanamine. The ligands were characterised on the basis of their elemental analysis, IR spectroscopies, 1H, 13C NMR, ESI-mass spectrometry and for ligands 1, 2 and 4 also by X-ray diffraction. The crystal structures reveal that the ligands exist as discrete molecules with an average C–N bond distance of 1.2656 Å which is consistent with C=N double bonding.

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DO - 10.1007/s40995-017-0316-8

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