This review summarises some recent results on synthesis, structures, and reactivity of the
heavier analogues of carbenes, alkenes, and dienes. With the isolation of the first …

A system of additive covalent radii is proposed for σ2 π4 triple bonds involving elements
from Be to E 112 (eka‐mercury). Borderline cases with weak multiple bonding are included …

The heavier Group 14 element analogues of alkynes, in which one or both carbon atoms of
the triple bond are replaced by silicon, germanium, tin, or lead, are a unique compound …

Transition metal alkylidyne complexes are among the most important organometallic
compounds. The great utility of these compounds in organometallic and organic chemistry …

The 2p elements carbon, nitrogen, and oxygen readily form multiple bonds to many other
elements, and such bonds contribute strongly to the chemical behavior of organic …

Carbon forms multiple bonds to many other elements and these bonds are the origin of the
rich and versatile chemistry of many organic and organometallic compounds. In contrast, the …

The reactions of the germylenoid Li (THF) 3GeCl2C (SiMe3) 3 with the carbonyl metalates Li
[CpMo (CO) 3] and K [CpW (CO) 3](Cp= η5-C5H5) in toluene afford selectively the …

A novel method to prepare SiCp* 2 (1)(Cp*= C5Me5) is presented involving the reaction of N-
heterocyclic carbene (NHC)-stabilized SiII halides SiX2 (NHC)(X= Cl, Br) with 2 equiv of …

The halogermylenes (Cp* GeX) n (1a, X= Cl, n= 1; 1b, X= Br, n= 2; Cp*=
pentamethylcyclopentadienyl) were prepared in high yield by a redistribution reaction of …

The heavier analogues of transition-metal carbyne complexes are attractive synthetic targets
for research in fundamental organometallic and main-group chemistry. Over the last 15 …