Heavier Elements

Persistent and stable radicals of the heavier main group elements and related species.

Formazanido complexes of heavier group 13 elements aluminium, gallium, and indium.

The preparation, molecular structures and physical properties of novel heavy group 13 metal formazanido complexes are described. The trimethyl derivatives MMe3 (M = Al, Ga, In) react with 1,3,5-triphenylformazan (Htpf) in a 1 : 1 ratio to give methane and metallacycles of the type [M(tpf)Me2]. While [Al(tpf)Me2] and [Ga(tpf)Me2] are mononuclear compounds with six-membered rings and coordination...

VII-G Synthesis of Compounds Having a Novel Bonding Containing Heavier Main Group Elements

Since aromatic compounds play very important roles in organic chemistry, much attention has been also paid to the chemistry of silaaromatic compounds. However, there are few reports on the synthesis and isolation of silaaromatic compounds stable at room temperature because of their high reactivity. Very recently, we have successfully synthesized the first stable silabenzene, 2silanaphthalene, a...

Synthesis and properties of stable 2-metallanaphthalenes of heavier group 14 elements.

The first stable neutral stannaaromatic compound, 2-stannanaphthalene , was synthesized by taking advantage of an extremely bulky and efficient steric protection group, 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl (Tbt). The molecular structure and aromaticity of were discussed on the basis of X-ray crystallographic analysis, NMR, UV-vis, and Raman spectroscopy, cyclic voltammetry, and theoretic...

VII-K Synthesis of Compounds Having a Novel Bonding Containing Heavier Main Group Elements

The chemistry of complexes with diatomic chalcogen ligands has attracted much attention due to their unique structure, biological interest, potential for hydrogen-transfer catalysis, and synthetic utility as a precursor of new metal cluster complexes. However, since sulfur and selenium ligands have a strong propensity for bridging metal atoms, it is often difficult to prepare their mononuclear ...