A hydrogen-bonded dimer of a novel Co(II) complex of monoethanolamine with thiocyanate: synthesis, spectra, thermal behaviour and crystal structure

V T Yilmaz, O Andac, A Karadag, W T A Harrison

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Abstract

A strongly hydrogen-bonded dimer of the Co(II) complex of monoethanolamine, [Co(meaH)(3)][Co(mea)(meaH)(2)](SCN)(3), was synthesized and characterized by single crystal X-ray diffractometry, UV-Vis and IR spectroscopy. The complex consists of [Co(meaH)(3)](2+) and [Co(mea)(meaH)(2)](+), and three SCN- anions. In each cation, the Co(II) ion is coordinated by a distorted octahedral arrangement of three monoethanolamine ligands in a bidentate manner. One of the monoethanolamine ligands in the [Co(mea)(meaH)(2)](+) cation is in the deprotonated form by losing its hydroxyl hydrogen. The complex cation units are held together by three strong O-H...O bonds formed between three ethanolic oxygens forming a hydrogen-bonded dimer of [Co(meaH)(3)](2+)...[Co(mea)(meaH)(2)](+). The hydrogen bonding O...O distances are significantly short at ca. 2.41(4) Angstrom. The SCN- anions are involved in hydrogen bonding connecting the dimeric units to give a three dimensional infinite network. During the thermal decomposition process, the complex loses the monoethanolamine ligands in the first stage, followed by the decomposition of the SCN- anions at higher temperatures to give metallic cobalt as the end product. (C) 2002 Elsevier Science B.V. All rights reserved.

Original languageEnglish
Pages (from-to)119-124
Number of pages6
JournalJournal of Molecular Structure
Volume641
Publication statusPublished - 2002

Keywords

  • monoethanolamine complex
  • hydrogen-bonded dimer
  • crystal structure
  • thermal analysis
  • ETHANOLAMINE
  • TRIETHANOLAMINE
  • COPPER(II)

Cite this

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title = "A hydrogen-bonded dimer of a novel Co(II) complex of monoethanolamine with thiocyanate: synthesis, spectra, thermal behaviour and crystal structure",
abstract = "A strongly hydrogen-bonded dimer of the Co(II) complex of monoethanolamine, [Co(meaH)(3)][Co(mea)(meaH)(2)](SCN)(3), was synthesized and characterized by single crystal X-ray diffractometry, UV-Vis and IR spectroscopy. The complex consists of [Co(meaH)(3)](2+) and [Co(mea)(meaH)(2)](+), and three SCN- anions. In each cation, the Co(II) ion is coordinated by a distorted octahedral arrangement of three monoethanolamine ligands in a bidentate manner. One of the monoethanolamine ligands in the [Co(mea)(meaH)(2)](+) cation is in the deprotonated form by losing its hydroxyl hydrogen. The complex cation units are held together by three strong O-H...O bonds formed between three ethanolic oxygens forming a hydrogen-bonded dimer of [Co(meaH)(3)](2+)...[Co(mea)(meaH)(2)](+). The hydrogen bonding O...O distances are significantly short at ca. 2.41(4) Angstrom. The SCN- anions are involved in hydrogen bonding connecting the dimeric units to give a three dimensional infinite network. During the thermal decomposition process, the complex loses the monoethanolamine ligands in the first stage, followed by the decomposition of the SCN- anions at higher temperatures to give metallic cobalt as the end product. (C) 2002 Elsevier Science B.V. All rights reserved.",
keywords = "monoethanolamine complex, hydrogen-bonded dimer, crystal structure, thermal analysis, ETHANOLAMINE, TRIETHANOLAMINE, COPPER(II)",
author = "Yilmaz, {V T} and O Andac and A Karadag and Harrison, {W T A}",
year = "2002",
language = "English",
volume = "641",
pages = "119--124",
journal = "Journal of Molecular Structure",
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TY - JOUR

T1 - A hydrogen-bonded dimer of a novel Co(II) complex of monoethanolamine with thiocyanate: synthesis, spectra, thermal behaviour and crystal structure

AU - Yilmaz, V T

AU - Andac, O

AU - Karadag, A

AU - Harrison, W T A

PY - 2002

Y1 - 2002

N2 - A strongly hydrogen-bonded dimer of the Co(II) complex of monoethanolamine, [Co(meaH)(3)][Co(mea)(meaH)(2)](SCN)(3), was synthesized and characterized by single crystal X-ray diffractometry, UV-Vis and IR spectroscopy. The complex consists of [Co(meaH)(3)](2+) and [Co(mea)(meaH)(2)](+), and three SCN- anions. In each cation, the Co(II) ion is coordinated by a distorted octahedral arrangement of three monoethanolamine ligands in a bidentate manner. One of the monoethanolamine ligands in the [Co(mea)(meaH)(2)](+) cation is in the deprotonated form by losing its hydroxyl hydrogen. The complex cation units are held together by three strong O-H...O bonds formed between three ethanolic oxygens forming a hydrogen-bonded dimer of [Co(meaH)(3)](2+)...[Co(mea)(meaH)(2)](+). The hydrogen bonding O...O distances are significantly short at ca. 2.41(4) Angstrom. The SCN- anions are involved in hydrogen bonding connecting the dimeric units to give a three dimensional infinite network. During the thermal decomposition process, the complex loses the monoethanolamine ligands in the first stage, followed by the decomposition of the SCN- anions at higher temperatures to give metallic cobalt as the end product. (C) 2002 Elsevier Science B.V. All rights reserved.

AB - A strongly hydrogen-bonded dimer of the Co(II) complex of monoethanolamine, [Co(meaH)(3)][Co(mea)(meaH)(2)](SCN)(3), was synthesized and characterized by single crystal X-ray diffractometry, UV-Vis and IR spectroscopy. The complex consists of [Co(meaH)(3)](2+) and [Co(mea)(meaH)(2)](+), and three SCN- anions. In each cation, the Co(II) ion is coordinated by a distorted octahedral arrangement of three monoethanolamine ligands in a bidentate manner. One of the monoethanolamine ligands in the [Co(mea)(meaH)(2)](+) cation is in the deprotonated form by losing its hydroxyl hydrogen. The complex cation units are held together by three strong O-H...O bonds formed between three ethanolic oxygens forming a hydrogen-bonded dimer of [Co(meaH)(3)](2+)...[Co(mea)(meaH)(2)](+). The hydrogen bonding O...O distances are significantly short at ca. 2.41(4) Angstrom. The SCN- anions are involved in hydrogen bonding connecting the dimeric units to give a three dimensional infinite network. During the thermal decomposition process, the complex loses the monoethanolamine ligands in the first stage, followed by the decomposition of the SCN- anions at higher temperatures to give metallic cobalt as the end product. (C) 2002 Elsevier Science B.V. All rights reserved.

KW - monoethanolamine complex

KW - hydrogen-bonded dimer

KW - crystal structure

KW - thermal analysis

KW - ETHANOLAMINE

KW - TRIETHANOLAMINE

KW - COPPER(II)

M3 - Article

VL - 641

SP - 119

EP - 124

JO - Journal of Molecular Structure

JF - Journal of Molecular Structure

SN - 0022-2860

ER -