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The Transition Metal Chemistry of PGeP and PSnP Pincer Heavier Tetrylenes
Author(s) -
Cabeza Javier A.,
GarcíaÁlvarez Pablo,
LagleraGándara Carlos J.
Publication year - 2020
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201901248
Subject(s) - chemistry , pincer movement , phosphine , transition metal , carbene , ligand (biochemistry) , metal , coordination complex , atom (system on chip) , derivative (finance) , main group element , medicinal chemistry , stereochemistry , crystallography , polymer chemistry , organic chemistry , catalysis , biochemistry , receptor , computer science , financial economics , economics , embedded system
This review article collects and discusses the syntheses of the currently known metal‐free heavier tetrylenes having a PEP pincer topology (E = tetrel atom) as well as their transition metal derivative chemistry. To date, only five PGeP germylenes and two PSnP stannylenes have been isolated. These compounds have been successfully synthesized by treating GeCl 2 (diox) (diox = 1,4‐dioxane), GeCl 2 (NHC) (NHC = N‐heterocyclic carbene) or SnCl 2 with two equivalents of an appropriate lithiated phosphine. Their transition metal chemistry is dominated by processes in which, in addition to the coordination of one or both phosphane groups, the E atom ends inserted into M–M or M–X (X = anionic group) bonds. Only in a few occasions a simple coordination of the tetrylene fragment (as a neutral two‐electron‐donor ligand) has been observed. The structural and bonding characteristics of the metal‐free PEP tetrylenes and of relevant examples of their transition metal derivatives are also surveyed.