The Synthesis of TcNCI₃; New Approaches to TcNCl₄ ^-

Abstract

TcNCla / Technetium / Nitrido Compounds / Tc complexes SummaryThe neutral technetium nitride chloride TcNCU was prepared from TcCU and IN3 in CCI4. The Compound is a black, insoluble solid which dissolves in CH2CI2 after addition of (Ph4As)Cl under formation of (Ph4As)|TcNCl4]. The [Tc^'NCU]" anion was also obtained by the reactions of [Tc^OCU]" withNCI3 or the sterically hindered benzamidine Ph -CN(SiMe3)N(SiMe3)2. The latter Compound decomposes during the reaction under formation of benzonitrile, (SiMe3)2 and (SiMe3)20.

Rhenium(V) and Technetium(V) Complexes with Phosphoraneimine and Phosphoraneiminato Ligands

“…The high stability of the triple bonds between nitrogen and technetium or rhenium is most probably the driving force for the decomposition of the phosphoraneiminate and the formation of nitrido ligands. Similar formations of M⋮N bonds (M = Re, Tc) have been observed during the decomposition of other nitrogen-containing species such as dithiocarbazates, benzamidines, phenylhydrazine, azides, , and isothiocyanato or thionitrosyl ligands. , …”

Tetrafluoridonitridotechnetate(VI) – Reactions and Structures

“…The chemistry of nitrido complexes of technetium(VI) has been extensively studied and the formation of [TcN X 4 ] – or [TcN X 5 ] 2– ( X = Cl, Br) anions as key compounds of this chemistry from various reactions is well established . The structures of the tetraphenylarsonium and tetrabutylammonium salts of [TcNCl 4 ] – and [TcNBr 4 ] – as well as those of Cs 2 [TcNCl 5 ], Cs 2 [TcNBr 5 ] and (NEt 4 )[TcNBr 4 (H 2 O)] have been determined by X‐ray diffraction , , …”

[Au(Et2dtc)2][TcNCl4] - Darstellung und Struktur

“…Das Tetrachloronitridotechnetat(VI)-Anion, [TcNCl 4 ] ± , ist von bemerkenswerter Stabilita È t. Zur Ausbildung der Tech-netium±Stickstoff-Dreifachbindung sind Reaktionen von Oxo-oder Halogenoverbindungen des Ûbergangsmetalls mit Aziden [1±3], NCl 3 [4], PhCN(SiMe 3 )N(SiMe 3 ) 2 [4] oder NH 2 OSO 3 H [5] geeignet. In Gegenwart von Chloridionen wird dabei bevorzugt [TcNCl 4 ] ± gebildet.…”