Warning: file_get_contents(https://eutils.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=41384034
&cmd=llinks): Failed to open stream: HTTP request failed! HTTP/1.1 429 Too Many Requests
in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 215
Flash Communication: Strained and Bimetallic Structures of Rhodium and Iridium
Germyl Complexes with Phosphinoamido Ligands
#MMPMID41384034
Bajo S
; Fernández-Buenestado M
; López-Serrano J
; Campos J
Organometallics
2025[Dec]; 44
(23
): 2729-2732
PMID41384034
show ga
In the coordination chemistry of heavier tetrylenes (:ER(2), where E = Si, Ge,
Sn, Pb), chelating P,N-donor ligands occupy a privileged position, though
phosphinoamido ligands, [R(2)P-NR'](-), have been barely investigated. Herein, we
report the synthesis and structural characterization of such complexes, whose
structures drastically differ depending on the group 9 metal precursor used.
Strained four-membered {P-N-Ge-M} metallacycles (M = Rh, Ir) are produced from
the reaction of phosphinoamido germylenes with [MCl(2)Cp*](2) precursors (Cp* =
?(5)-C(5)Me(5)). At variance, [MCl-(COD)](2) dimers are not broken apart;
instead, they afford bimetallic species featuring bridging phosphinoamido-germyl
and chloride ligands between the two metals. All new compounds were isolated on a
preparative scale and spectroscopically characterized and their structures
confirmed by X-ray diffraction. Computational studies support the ?-donor
character of the Ge-M interaction and the absence of significant ?-backbonding.
free
free
free
