New oxotechnetium (V) complexes of N,N'-ethylenebis(acetylacetone imine), N,N'-ethylenebis(salicylideneamine), and o-phenylenebis(salicylideneamine). X-ray structures of the complexes of N,N'-ethylenebis(acetylacetone imine) and N,N'-ethylenebis (salicylideneamine)
- Univ. of Cincinnati, OH
New technetium (V) oxo complexes of tetradentate Schiff base ligands have been synthesized and characterized. X-ray structure determination shows that the N,N'-ethylenebis(acetylacetone iminato) complex (TcO(H/sub 2/O)(C/sub 12/H/sub 18/N/sub 2/O/sub 2/)/sup +/ has a distorted octahedral coordination geometry, containing a trans-oxoaquatechnetium(V) core. Such a trans-TcO(OH/sub 2/)/sup 3 +/ core is intermediate between the previously well-characterized monooxo, TcO/sup 3 +/, and trans-dioxo, TcO/sub 2//sup +/, cores. The complex was isolated as a mixed chloride/bromide salt (TcO(H/sub 2/O)(C/sub 12/H/sub 18/N/sub 2/O/sub 2/)Br/sub 0/./sub 25/, which crystallizes in the triclinic space group P1 with a = 10.935 (4) A, b = 9.877 (4) A, c = 7.324 (3) A, ..cap alpha.. = 87.266 (9)/sup 0/, ..gamma.. = 102.498 (12)/sup 0/, ..gamma.. = 97.845 (9)/sup 0/, and R = 0.0215 for 2370 diffractometer data with I greater than or equal to 3sigma(I). The N,N'-ethylenebis(salicylideneaminato) complex (TcOCl(C/sub 16/H/sub 14/N/sub 2/O/sub 2/)) also has a pseudooctahedral coordination geometry but contains a trans-oxochlorotechetium (V) core and crystallizes in space group P2/sub 1/2/sub 1/2/sub 1/ with a = 26.653 (11) A, b = 11.697 (5) A, c = 10.529 (3) A, and R = 0.0642 for 2105 diffractometer data with I GAMMA 3sigma(I). 2 figures,3 tables.
- OSTI ID:
- 7138241
- Journal Information:
- Inorg. Chem.; (United States), Vol. 23:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
TECHNETIUM COMPLEXES
STRUCTURAL CHEMICAL ANALYSIS
ALKENES
BOND ANGLE
BOND LENGTHS
CATIONS
CRYSTALLOGRAPHY
EXPERIMENTAL DATA
HYDRATES
LATTICE PARAMETERS
LIGANDS
MOLECULAR STRUCTURE
SCHIFF BASES
SPACE GROUPS
SYNTHESIS
TRICLINIC LATTICES
ULTRAVIOLET SPECTRA
X-RAY DIFFRACTION
CHARGED PARTICLES
COHERENT SCATTERING
COMPLEXES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
DIMENSIONS
HYDROCARBONS
IMINES
INFORMATION
IONS
LENGTH
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
SCATTERING
SPECTRA
TRANSITION ELEMENT COMPLEXES
400702* - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials