Reaction of copper(II) with 1-carboxamide-3,5-dimethylpyrazole, 1-carboxamidine-3,5-dimethylpyrazole, 4-acetyl-3-amino-5-methylpyrazole and 5-amino-4-carboxamide-1-phenylpyrazole

K. Meszaros Szecsenyi, V. M. Leovac, V. I. Češljević, A. Kovács, G. Pokol, G. Argay, A. Kálmán, G. A. Bogdanović, Ž K. Jaćimović, A. Spasojević-de Biré

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Complex formation of copper(II) bromide and acetate with 1-carboxamide-3,5-dimethylpyrazole (HL3) and copper(II) bromide with 5-amino-4-carboxamide-1-phenylpyrazole (L2), 4-acetyl-3-amino-5-methylpyrazole (HL4) and 1-carboxamidine-3,5-dimethylpyrazole (HL5), was studied. The obtained compounds, CuBr2(L2)2, Cu(L 3)2, CuBr2(HL4)2, CuBr2(HL5)2 and [CuBr(HL1)(L 3)]2 (HL1 denotes the 3,5-dimethylpyrazole), are characterized by elemental analysis, FT-IR spectrometry, molar conductivity, TG-MS and DSC. The X-ray structure of [CuBr(HL1)(L 3)]2 and Cu(L3)2 is discussed. For [CuBr(HL1)(L3)]2 a dimeric penta-co-ordinated structure has been found; the co-ordination around the metal in Cu(L 3)2 is trans-square planar. To CuBr2(L 2)2 and CuBr2(HL4)2 a nearly tetrahedral, while for CuBr2(HL5)2 an octahedral geometry may be assumed. It means that the geometry of the compounds in the first place depends on the ligand substituents. The course of the complex formation reaction is anion-dependent and may be explained on the basis of Pearson's theory, taking into account the steric factors. A low stability intermediate formation was observed in the thermal decomposition of Cu(L 3)2.

Original languageEnglish
Pages (from-to)253-262
Number of pages10
JournalInorganica Chimica Acta
Volume353
DOIs
Publication statusPublished - Sep 8 2003

Fingerprint

Copper
copper
Rubiaceae
Geometry
bromides
Spectrometry
Anions
Spectrum Analysis
Pyrolysis
Negative ions
Hot Temperature
Metals
Ligands
X-Rays
geometry
X rays
thermal decomposition
acetates
Chemical analysis
anions

Keywords

  • Copper(II)-complexes
  • Pearson theory
  • Pyrazole-complexes

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Reaction of copper(II) with 1-carboxamide-3,5-dimethylpyrazole, 1-carboxamidine-3,5-dimethylpyrazole, 4-acetyl-3-amino-5-methylpyrazole and 5-amino-4-carboxamide-1-phenylpyrazole. / Meszaros Szecsenyi, K.; Leovac, V. M.; Češljević, V. I.; Kovács, A.; Pokol, G.; Argay, G.; Kálmán, A.; Bogdanović, G. A.; Jaćimović, Ž K.; Spasojević-de Biré, A.

In: Inorganica Chimica Acta, Vol. 353, 08.09.2003, p. 253-262.

Research output: Contribution to journalArticle

Meszaros Szecsenyi, K. ; Leovac, V. M. ; Češljević, V. I. ; Kovács, A. ; Pokol, G. ; Argay, G. ; Kálmán, A. ; Bogdanović, G. A. ; Jaćimović, Ž K. ; Spasojević-de Biré, A. / Reaction of copper(II) with 1-carboxamide-3,5-dimethylpyrazole, 1-carboxamidine-3,5-dimethylpyrazole, 4-acetyl-3-amino-5-methylpyrazole and 5-amino-4-carboxamide-1-phenylpyrazole. In: Inorganica Chimica Acta. 2003 ; Vol. 353. pp. 253-262.
@article{97ab376995e34f84a6adb0c1ced9c10c,
title = "Reaction of copper(II) with 1-carboxamide-3,5-dimethylpyrazole, 1-carboxamidine-3,5-dimethylpyrazole, 4-acetyl-3-amino-5-methylpyrazole and 5-amino-4-carboxamide-1-phenylpyrazole",
abstract = "Complex formation of copper(II) bromide and acetate with 1-carboxamide-3,5-dimethylpyrazole (HL3) and copper(II) bromide with 5-amino-4-carboxamide-1-phenylpyrazole (L2), 4-acetyl-3-amino-5-methylpyrazole (HL4) and 1-carboxamidine-3,5-dimethylpyrazole (HL5), was studied. The obtained compounds, CuBr2(L2)2, Cu(L 3)2, CuBr2(HL4)2, CuBr2(HL5)2 and [CuBr(HL1)(L 3)]2 (HL1 denotes the 3,5-dimethylpyrazole), are characterized by elemental analysis, FT-IR spectrometry, molar conductivity, TG-MS and DSC. The X-ray structure of [CuBr(HL1)(L 3)]2 and Cu(L3)2 is discussed. For [CuBr(HL1)(L3)]2 a dimeric penta-co-ordinated structure has been found; the co-ordination around the metal in Cu(L 3)2 is trans-square planar. To CuBr2(L 2)2 and CuBr2(HL4)2 a nearly tetrahedral, while for CuBr2(HL5)2 an octahedral geometry may be assumed. It means that the geometry of the compounds in the first place depends on the ligand substituents. The course of the complex formation reaction is anion-dependent and may be explained on the basis of Pearson's theory, taking into account the steric factors. A low stability intermediate formation was observed in the thermal decomposition of Cu(L 3)2.",
keywords = "Copper(II)-complexes, Pearson theory, Pyrazole-complexes",
author = "{Meszaros Szecsenyi}, K. and Leovac, {V. M.} and Češljević, {V. I.} and A. Kov{\'a}cs and G. Pokol and G. Argay and A. K{\'a}lm{\'a}n and Bogdanović, {G. A.} and Jaćimović, {Ž K.} and {Spasojević-de Bir{\'e}}, A.",
year = "2003",
month = "9",
day = "8",
doi = "10.1016/S0020-1693(03)00231-7",
language = "English",
volume = "353",
pages = "253--262",
journal = "Inorganica Chimica Acta",
issn = "0020-1693",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Reaction of copper(II) with 1-carboxamide-3,5-dimethylpyrazole, 1-carboxamidine-3,5-dimethylpyrazole, 4-acetyl-3-amino-5-methylpyrazole and 5-amino-4-carboxamide-1-phenylpyrazole

AU - Meszaros Szecsenyi, K.

AU - Leovac, V. M.

AU - Češljević, V. I.

AU - Kovács, A.

AU - Pokol, G.

AU - Argay, G.

AU - Kálmán, A.

AU - Bogdanović, G. A.

AU - Jaćimović, Ž K.

AU - Spasojević-de Biré, A.

PY - 2003/9/8

Y1 - 2003/9/8

N2 - Complex formation of copper(II) bromide and acetate with 1-carboxamide-3,5-dimethylpyrazole (HL3) and copper(II) bromide with 5-amino-4-carboxamide-1-phenylpyrazole (L2), 4-acetyl-3-amino-5-methylpyrazole (HL4) and 1-carboxamidine-3,5-dimethylpyrazole (HL5), was studied. The obtained compounds, CuBr2(L2)2, Cu(L 3)2, CuBr2(HL4)2, CuBr2(HL5)2 and [CuBr(HL1)(L 3)]2 (HL1 denotes the 3,5-dimethylpyrazole), are characterized by elemental analysis, FT-IR spectrometry, molar conductivity, TG-MS and DSC. The X-ray structure of [CuBr(HL1)(L 3)]2 and Cu(L3)2 is discussed. For [CuBr(HL1)(L3)]2 a dimeric penta-co-ordinated structure has been found; the co-ordination around the metal in Cu(L 3)2 is trans-square planar. To CuBr2(L 2)2 and CuBr2(HL4)2 a nearly tetrahedral, while for CuBr2(HL5)2 an octahedral geometry may be assumed. It means that the geometry of the compounds in the first place depends on the ligand substituents. The course of the complex formation reaction is anion-dependent and may be explained on the basis of Pearson's theory, taking into account the steric factors. A low stability intermediate formation was observed in the thermal decomposition of Cu(L 3)2.

AB - Complex formation of copper(II) bromide and acetate with 1-carboxamide-3,5-dimethylpyrazole (HL3) and copper(II) bromide with 5-amino-4-carboxamide-1-phenylpyrazole (L2), 4-acetyl-3-amino-5-methylpyrazole (HL4) and 1-carboxamidine-3,5-dimethylpyrazole (HL5), was studied. The obtained compounds, CuBr2(L2)2, Cu(L 3)2, CuBr2(HL4)2, CuBr2(HL5)2 and [CuBr(HL1)(L 3)]2 (HL1 denotes the 3,5-dimethylpyrazole), are characterized by elemental analysis, FT-IR spectrometry, molar conductivity, TG-MS and DSC. The X-ray structure of [CuBr(HL1)(L 3)]2 and Cu(L3)2 is discussed. For [CuBr(HL1)(L3)]2 a dimeric penta-co-ordinated structure has been found; the co-ordination around the metal in Cu(L 3)2 is trans-square planar. To CuBr2(L 2)2 and CuBr2(HL4)2 a nearly tetrahedral, while for CuBr2(HL5)2 an octahedral geometry may be assumed. It means that the geometry of the compounds in the first place depends on the ligand substituents. The course of the complex formation reaction is anion-dependent and may be explained on the basis of Pearson's theory, taking into account the steric factors. A low stability intermediate formation was observed in the thermal decomposition of Cu(L 3)2.

KW - Copper(II)-complexes

KW - Pearson theory

KW - Pyrazole-complexes

UR - http://www.scopus.com/inward/record.url?scp=0141569758&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0141569758&partnerID=8YFLogxK

U2 - 10.1016/S0020-1693(03)00231-7

DO - 10.1016/S0020-1693(03)00231-7

M3 - Article

AN - SCOPUS:0141569758

VL - 353

SP - 253

EP - 262

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

SN - 0020-1693

ER -