Mixed-ligand complexes of technetium X. Detection of nitridotechnetate(VI) complexes with coordinated azido ligands, [TcNXn(N3)4-n]- (X Cl, Br; n = 1-4), by EPR spectroscopy in solution

U. Abram; K. Köhler; R. Kirmse; N. B. Kalinichenko; I. N. Marov

doi:10.1016/S0020-1693(00)85104-X

Mixed-ligand complexes of technetium X. Detection of nitridotechnetate(VI) complexes with coordinated azido ligands, [TcNX_n(N₃)_4-n]^- (X Cl, Br; n = 1-4), by EPR spectroscopy in solution

U. Abram
, K. Köhler
, R. Kirmse
, N. B. Kalinichenko
, I. N. Marov

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Reactions of (Bu₄N)TcNX₄ (X = Cl, Br) and (Bu₄N)TcOCl₄ with sodium azide in acetonic solutions are studied by EPR. During the reactions mixed-ligand complexes of the type [TCNX_n(N₃)_4-n]^- (n=0-4) are formed which can be characterized by their EPR spectral data. The parameters of the individual species strongly depend on the composition of the equatorial coordination sphere. [TcN(N₃)₄]^- is characterized by a nearly isotropic frozen solution EPR spectrum (g∥=1.979; g⊥=1.982). By means of an MO model the covalency of the Tc(equatorial)-ligand bond was found to be higher than those in analogous halide complexes.

Original language	English
Pages (from-to)	139-142
Number of pages	4
Journal	Inorganica Chimica Acta
Volume	176
Issue number	1
DOIs	https://doi.org/10.1016/S0020-1693(00)85104-X
State	Published - 1 Oct 1990
Externally published	Yes

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@article{7d97cf7542d14b51b8ba2537fed28b72,

title = "Mixed-ligand complexes of technetium X. Detection of nitridotechnetate(VI) complexes with coordinated azido ligands, [TcNXn(N3)4-n]- (X Cl, Br; n = 1-4), by EPR spectroscopy in solution",

abstract = "Reactions of (Bu4N)TcNX4 (X = Cl, Br) and (Bu4N)TcOCl4 with sodium azide in acetonic solutions are studied by EPR. During the reactions mixed-ligand complexes of the type [TCNXn(N3)4-n]- (n=0-4) are formed which can be characterized by their EPR spectral data. The parameters of the individual species strongly depend on the composition of the equatorial coordination sphere. [TcN(N3)4]- is characterized by a nearly isotropic frozen solution EPR spectrum (g∥=1.979; g⊥=1.982). By means of an MO model the covalency of the Tc(equatorial)-ligand bond was found to be higher than those in analogous halide complexes.",

author = "U. Abram and K. K{\"o}hler and R. Kirmse and Kalinichenko, \{N. B.\} and Marov, \{I. N.\}",

year = "1990",

month = oct,

day = "1",

doi = "10.1016/S0020-1693(00)85104-X",

language = "English",

volume = "176",

pages = "139--142",

journal = "Inorganica Chimica Acta",

issn = "0020-1693",

publisher = "Elsevier B.V.",

number = "1",

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TY - JOUR

T1 - Mixed-ligand complexes of technetium X. Detection of nitridotechnetate(VI) complexes with coordinated azido ligands, [TcNXn(N3)4-n]- (X Cl, Br; n = 1-4), by EPR spectroscopy in solution

AU - Abram, U.

AU - Köhler, K.

AU - Kirmse, R.

AU - Kalinichenko, N. B.

AU - Marov, I. N.

PY - 1990/10/1

Y1 - 1990/10/1

N2 - Reactions of (Bu4N)TcNX4 (X = Cl, Br) and (Bu4N)TcOCl4 with sodium azide in acetonic solutions are studied by EPR. During the reactions mixed-ligand complexes of the type [TCNXn(N3)4-n]- (n=0-4) are formed which can be characterized by their EPR spectral data. The parameters of the individual species strongly depend on the composition of the equatorial coordination sphere. [TcN(N3)4]- is characterized by a nearly isotropic frozen solution EPR spectrum (g∥=1.979; g⊥=1.982). By means of an MO model the covalency of the Tc(equatorial)-ligand bond was found to be higher than those in analogous halide complexes.

AB - Reactions of (Bu4N)TcNX4 (X = Cl, Br) and (Bu4N)TcOCl4 with sodium azide in acetonic solutions are studied by EPR. During the reactions mixed-ligand complexes of the type [TCNXn(N3)4-n]- (n=0-4) are formed which can be characterized by their EPR spectral data. The parameters of the individual species strongly depend on the composition of the equatorial coordination sphere. [TcN(N3)4]- is characterized by a nearly isotropic frozen solution EPR spectrum (g∥=1.979; g⊥=1.982). By means of an MO model the covalency of the Tc(equatorial)-ligand bond was found to be higher than those in analogous halide complexes.

UR - https://www.scopus.com/pages/publications/0038820829

U2 - 10.1016/S0020-1693(00)85104-X

DO - 10.1016/S0020-1693(00)85104-X

M3 - Article

AN - SCOPUS:0038820829

SN - 0020-1693

VL - 176

SP - 139

EP - 142

JO - Inorganica Chimica Acta

JF - Inorganica Chimica Acta

IS - 1

ER -

Mixed-ligand complexes of technetium X. Detection of nitridotechnetate(VI) complexes with coordinated azido ligands, [TcNX_n(N₃)_4-n]^- (X Cl, Br; n = 1-4), by EPR spectroscopy in solution

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