Transition metal compounds of chlorophenols: synthesis, characterization and single-crystal X-ray structures of (N,N,N′,N′-tetramethyl-ethylenediamine)bis(2,4,6-trichlorophenolato)cobalt(II) and bis(N-methylimidazole)bis(2,6-dichlorophenolato)copper(II)

Baştürkmen, Meray; Kisakürek, Duygu; Driessen, Willem L.; Gorter, S.; Reedijk, J.

doi:10.1016/s0020-1693(97)05887-8

Cited by 9 publications

(8 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is believed that the structure of the complexes and the kind of ligands has significant effects on polymerization [9][10]. Although, several compounds with deprotonated 2,4,6-trichlorophenol (tcp) have been structurally solved [1,[11][12] reports about 2,4,6-tribromophenolate compounds are very rare [13][14].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, crystal structure and characterization of new transition metal compounds of bromophenols: Bis(2,4,6-tribromophenolato) di(N-methylimidazole)M(II) (M=Co, Cu)

Çamurlu

Yilmaz²,

Tatar

et al. 2005

Cryst. Res. Technol.

View full text Add to dashboard Cite

Bis(2,4,6-tribromophenolato)di(N-methyl imidazole)M(II), where M stands for cobalt and copper metals, was synthesized via reaction of the corresponding metal sulphate and 2,4,6-tribromophenolate in aqueous media in the presence of N-methyl imidazole and sodium hydroxide. Although various crystallization procedures were applied only cobalt complex was obtained as single crystals. The Co(II) ion has a distorted octahedral enviroment involving two O atoms and two N atoms of the Bis(2,4,6-tribromophenolato)di(N-methyl imidazole) ligand. Powder x-ray diffraction pattern of copper compound was used for cooper complex. For characterizations of complexes carbon, hydrogen and nitrogen elemental analysis, FTIR and UV spectroscopy, DSC thermal analysis and magnetic susceptibility measurements at room temperature were performed.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis, crystal structure and characterization of new transition metal compounds of bromophenols: Bis(2,4,6-tribromophenolato) di(N-methylimidazole)M(II) (M=Co, Cu)

Çamurlu

Yilmaz²,

Tatar

et al. 2005

Cryst. Res. Technol.

View full text Add to dashboard Cite

show abstract

“…C5 indicates the presence of tetragonally distorted octahedral field around the Co(II) ion. [21,22] DRS for C2 and C5 were also taken and show the same pattern as UV-VIS spectra of the complexes indicating that the coordination around the metal ion in solution is the same as the coordination in solid state. Magnetic susceptibility data for all complexes were also determined ( Table 2) and correlated well with the described coordinations.…”

Section: Effect Of Nmiz and Dmpz Ligands 1075mentioning

confidence: 80%

“…Absorption bands in the range 3000-3100 cm 21 were due to C-H stretching of the ring and those in the range of 2700-3100 cm 21 due to C-H of CH 3 group. C-N stretching was at 1000-1250 cm 21 for TMED ligand and 1250-1350 cm 21 for NMIz and DMPz. Absorption bands were in the range of 3070-3090 cm 21 due to C-H stretching, at 1460-1580 cm 21 due to C5 5C ring stretching, and at around 1220 cm 21 due to C-O stretching of phenolic groups.…”

Section: Effect Of Nmiz and Dmpz Ligands 1075mentioning

confidence: 97%

“…[17 -19] Crowded peaks of free DMPz ligand in the 2600-3300 cm 21 region due to strong H-bonding were simplified by Cu or Co complexation and were observed as a single strong peak around 3350 cm 21 in both complexes. The broad peak in NMIz in the 3000-3500 cm 21 region was simplified by Cu complexation giving a sharp peak at 3100 cm 21 . Absorption bands in the range 3000-3100 cm 21 were due to C-H stretching of the ring and those in the range of 2700-3100 cm 21 due to C-H of CH 3 group.…”

Section: Effect Of Nmiz and Dmpz Ligands 1075mentioning

confidence: 99%

“…The broad peak in NMIz in the 3000-3500 cm 21 region was simplified by Cu complexation giving a sharp peak at 3100 cm 21 . Absorption bands in the range 3000-3100 cm 21 were due to C-H stretching of the ring and those in the range of 2700-3100 cm 21 due to C-H of CH 3 group. C-N stretching was at 1000-1250 cm 21 for TMED ligand and 1250-1350 cm 21 for NMIz and DMPz.…”

Section: Effect Of Nmiz and Dmpz Ligands 1075mentioning

confidence: 99%

See 2 more Smart Citations

Effect ofN‐Methyl Imidazole and Dimethyl Pyrazole Ligands on Polymerization of di(2,4,6‐Trichlorophenolato)Cu(II)/Co(II) Complexes in Solid State

Baştürkmen

Kisakürek

2004

Journal of Macromolecular Science, Part A

Self Cite

View full text Add to dashboard Cite

Polymerization of 2,4,6-trichlorophenol (TCPH) was achieved through the thermal decomposition of the copper and cobalt complexes of TCPH with N-containing ligands [N-methyl imidazole (NMIz) and 3,5-dimethyl pyrazole (DMPz)]. The structural analysis of the complexes was performed by using Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), mass (MS), UV-VIS, diffuse reflectance (DRS) and electron spin resonance (ESR) spectroscopies, magnetic susceptibility balance and elemental analyses. Polymerization was achieved either in solid state or in melt, and the polymers were characterized by FTIR, nuclear magnetic resonance (NMR) spectroscopy, DSC, and viscosity measurements. The effects of the temperature and time dependencies of %Conversion on polymer synthesis were investigated. The cobalt complexes (having higher decomposition temperatures) were more stable than copper complexes (decomposing at lower temperatures). Thermal stability with respect to N-ligand shows that the complexes with NMIz are more stable than DMPz complexes of the same metal. The highest molecular weights (M w ) were achieved at the end of 3 hr of polymerization for C1 at 1708C, C2 at 1208C, and C4 at 1508C. The longer time at lowest conversion leads to highest M w of C1 at 1258C at the end of 24 hr, C2 at 908C at the end of 72 hr and at 1008C at the end of 48 hr.The M w of the polymeric products range between 8.5 Â 10 3 and 6.5 Â 10 4 . All polymers are rigid and have branched structures.

show abstract

Effect of N‐methylimidazole and 3,5‐dimethylpyrazole ligands on the polymerization of di(2,6‐dichlorophenolato) Cu(II)/Co(II) complexes in the solid state

Baştürkmen

Hacaloğlu

Kisakürek

2004

J of Applied Polymer Sci

View full text Add to dashboard Cite

The polymerization of 2,6-dichlorophenol (DCPH) was achieved through the thermal decomposition of copper complexes of DCPH with N-methylimidazole (NMIz) and 3,5-dimethylpyrazole (DMPz) ligands. Fourier transform infrared (FTIR), differential scanning calorimetry (DSC), mass spectrometry, ultraviolet-visible spectroscopy, diffuse reflectance spectroscopy, magnetic susceptibility balance, electron spin resonance, X-ray analysis, and elemental analysis were used to characterize the complexes. The polymerization was achieved either in the solid state or in the melt. The structural analyses were performed with FTIR and NMR spectroscopy analyses. The glass-transition temperatures were determined by DSC, and the intrinsic viscosities were determined by viscosimetry. The effects of the temperature and time on the conversion percentage and viscosity of the polymers were examined. Varying the decomposition temperature during a 3-h scan showed that the DMPz complex of Cu decomposed at lower temperatures than the NMIz complex, whereas the NMIz complex yielded a higher conversion to the polymer. Complexes of DCPH with NMIz and DMPz ligands produced 1,2-and 1,4-addition products, respectively.

show abstract

Transition metal compounds of chlorophenols: synthesis, characterization and single-crystal X-ray structures of (N,N,N′,N′-tetramethyl-ethylenediamine)bis(2,4,6-trichlorophenolato)cobalt(II) and bis(N-methylimidazole)bis(2,6-dichlorophenolato)copper(II)

Cited by 9 publications

References 14 publications

Synthesis, crystal structure and characterization of new transition metal compounds of bromophenols: Bis(2,4,6-tribromophenolato) di(N-methylimidazole)M(II) (M=Co, Cu)

Synthesis, crystal structure and characterization of new transition metal compounds of bromophenols: Bis(2,4,6-tribromophenolato) di(N-methylimidazole)M(II) (M=Co, Cu)

Effect ofN‐Methyl Imidazole and Dimethyl Pyrazole Ligands on Polymerization of di(2,4,6‐Trichlorophenolato)Cu(II)/Co(II) Complexes in Solid State

Effect of N‐methylimidazole and 3,5‐dimethylpyrazole ligands on the polymerization of di(2,6‐dichlorophenolato) Cu(II)/Co(II) complexes in the solid state

Contact Info

Product

Resources

About