Synthesis of the hexaamine ligand 1,4,7-tris(3-aminopropyl)-1,4,7-triazacyclononane: Reactivity and x-ray crystal structures of the nickel(II) and cobalt(III) complexes
The synthesis of the ligand 1,4,7-tris(3-aminopropyl)-1,4,7-triazacyclononane(tapacn) can be achieved by the reaction of 1,4,7-triazacyclononane with an excess of acetonitrile, followed by reduction of the nitrile with sodium metal in toluene. Halide salts of the cobalt(III)(complex A) and nickel(II)(complex B) ions have been prepared and examined by using x-ray crystallography. The crystal structures are reported. The /sup 13/C NMR spectrum of the dismagnetic d/sup 6/ Co(III) complex ion is reported. A discussion of the two ligand structures deals with the ligand opening and with trigonal twist angle as related to metal ion size and mechanism for redox processes of the complex. 45 refs., 6 figs., 9 tabs.
- Research Organization:
- Univ. of Victoria, British Columbia (Canada)
- OSTI ID:
- 5614425
- Journal Information:
- Inorg. Chem.; (United States), Journal Name: Inorg. Chem.; (United States) Vol. 27:15; ISSN INOCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Metal ion templated polymers. Synthesis and structure of N-(4-vinylbenzyl)-1,4,7-triazacyclononane-metal complexes, polymerization of the metal-monomer complexes with divinylbenzene, and metal ion selectivity studies of the demetalated resins
A novel hexachelating amino-thiol ligand and its complex with gallium(III)
Related Subjects
400201* -- Chemical & Physicochemical Properties
400202 -- Isotope Effects
Isotope Exchange
& Isotope Separation
ACETONITRILE
ALKANES
CARBON 13
CARBON ISOTOPES
CHEMICAL PREPARATION
COBALT COMPLEXES
COMPLEXES
CYCLOALKANES
DATA
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
HYDROCARBONS
INFORMATION
ISOTOPES
LIGANDS
LIGHT NUCLEI
NICKEL COMPLEXES
NITRILES
NMR SPECTRA
NUCLEI
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
SPECTRA
STABLE ISOTOPES
SYNTHESIS
TRANSITION ELEMENT COMPLEXES