Hindered Ligand Motions in Transition Metal Complexes, XII1 Tricarbonyl-η6-N-carbethoxyazepine-chromium(0), -molybdenum(0) and -tungsten(0) Gehinderte Ligandenbewegungen in Übergangsmetallkomplexen, XII1 Tricarbonyl-η6-N-carbäthoxyazepin-chrom(0), -molybdän(0) und -wolfram(0)

1977-04-01
Kreiter, Cornelius G.
Özkar, Saim
Show full item record
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
22
views
18
downloads
Tricarbonyl-i?6-N-carbethoxyazepine-metal(0) complexes of chromium, molybdenumand tungsten are formed, when triearbonyl-trisacetonitrile-chromium(O), tricarbonyl-diglyme-molybdenum(O) and tricarbonyl-trisacetonitrile-tungsten(O), respectively, aretreated with N-carbethoxyazepine. According to the and 13C NMR spectra of theN-carbethoxyazepine metal complexes two different ligand motions can be activatedthermally. The carbethoxy group rotates around the C-N-bond (zJG3oo^ = 64.6 to66.1 kJ • mole-1) and the azepine ligand itself moves against the tricarbonyl metal groups(A G25o^ = 45.6-52.1 kJ • mole-1).
N -Carbethoxyazepine Metal Complexes, NMR, Synthesis
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84917798414&origin=inward
https://hdl.handle.net/11511/102615
Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences
Graduate School of Natural and Applied Sciences, Article

Suggestions

HINDERED LIGANDS IN TRANSITION-METAL COMPLEXES .39. SYNTHESIS AND DYNAMIC BEHAVIOR OF TETRACARBONYL-ETA-4-TRICYCLO[6.3.0.0(2.7)]UNDECA-3,5-DIENE METAL(0) COMPLEXES AND DICARBONYL-BIS-(ETA-4-TRICYCLO[6.3.0.0(2.7)]UNDECA-3,5-DIENE METAL(0) COMPLEXES OF THE ELEMENTS CHROMIUM, MOLYBDENUM AND TUNGSTEN
Özkar, Saim; KREITER, CG (Elsevier BV, 1992-05-01)
The hexacarbonyls of chromium, molybdenum, and tungsten react with tricyclo[6.3.0.0(2,7)]undeca-3,5-diene upon UV irradiation in a first step to tetracarbonyl-eta-4-tricyclo[6.3.0.0(2.7)]undeca-3,5-diene-chromium(0) (1), -molybdenum(0) (2) and -tungsten(0) (3). By longer irradiation, dicarbonyl-bis(eta-4-tricyclo[6.3.0.0(2.7)]undeca-3,5-diene)molybdenum(0) (4) and -tungsten(0) (5) are formed. The complexes were purified by chromatography and studied by IR, H-1, and C-13 NMR spectroscopy. The C-13 NMR signal...
Synthesis of Bishomoinositols and an Entry for Construction of a Substituted 3-Oxabicyclo[3.3.1]nonane Skeleton
BARAN, ARİF; Bekarlar, Merve; Aydin, Gokay; NEBİOĞLU, MEHMET; ŞAHİN, Ertan; Balcı, Metin (2012-02-03)
1,3,3a,7a-Tetrahydro-2-benzofuran was used as key compound for the synthesis of various bishomoinositol derivatives. The diene was subjected to an epoxidation reaction for further functionalization of the diene unit. The bisepoxide obtained was submitted to a ring-opening reaction with acid in the presence of water. Various bishomoinositols were synthesized. However, when the reaction was carried out in the presence of acetic anhydride, a substituted 3-oxabicyclo[3.3.1]nonane skeleton was formed. The mechan...
The closo-Pb-10(2-) Zintl ion in the [Ni@Pb-10](2-) cluster
Nalbant Esentürk, Emren; Eichhorn, B (Royal Society of Chemistry (RSC), 2005-01-01)
The cluster [Ni@Pb-10](2-), prepared from Pb-9(4-) and Ni(COD)(2), contains a new Zintl ion subunit, closo-Pb-10(2-), centered by a Ni atom.
Effect of N-methyl imidazole and dimethyl pyrazole ligands on polymerization of di(2,4,6-trichlorophenolato)Cu(II)/Co(II) complexes in solid state
Kisakurek, D (Informa UK Limited, 2004-08-01)
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 analys...
Synthesis and characterization of water-soluble oligosalicylaldehyde-sulfanilic acid and its Cu(II), Co(II), Pb(II) complexes
Turac, Ersen; Surme, Yavuz; Sahmetlioglu, Ertugrul; Varol, Ramazan; NARİN, Ibrahim; Toppare, Levent Kamil (2008-10-05)
This work presents the synthesis and characterization of a new water-soluble oligophenol derivative, 4-(2-hydroxybenzylideneamino)benzenesulfanic acid (OSAL-SA) and its metal complexes. The chemical structure of the water-soluble polymer was characterized by nuclear magnetic resonance (H-1 NMR) and Fourier transform infrared (FTIR) spectroscopies and thermogravimetric analyses (TGAs). Pb(II), Cu(II), Co(II) complexes of the polymer were also synthesized in methanol. Characterizations of water insoluble poly...
Citation Formats
C. G. Kreiter and S. Özkar, “Hindered Ligand Motions in Transition Metal Complexes, XII1 Tricarbonyl-η6-N-carbethoxyazepine-chromium(0), -molybdenum(0) and -tungsten(0) Gehinderte Ligandenbewegungen in Übergangsmetallkomplexen, XII1 Tricarbonyl-η6-N-carbäthoxyazepin-chrom(0), -molybdän(0) und -wolfram(0),” Zeitschrift fur Naturforschung - Section B Journal of Chemical Sciences, vol. 32, no. 4, pp. 408–412, 1977, Accessed: 00, 2023. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84917798414&origin=inward.
METU IIS - Integrated Information Service open@metu.edu.tr