176545-11-2

Upstream product

• 144424-52-2 1,3,5-Tris-(bis-trimethylsilanyl-methyl)-2-diazomethyl-benzene 
• 603-35-0 triphenylphosphine 
• 176545-12-3 2,4-Bis-[2,4,6-tris-(bis-trimethylsilanyl-methyl)-phenyl]-[1,3]diselenetane 

Downstream Products

• 176545-16-7 [W(CO)5SeCHC₆H₂(CH(Si(CH₃)3)2)3] 

Relevant academic research and scientific papers

The First Rotational Isomers of Stable Selenobenzaldehydes and their η1-Tungsten Complexes

The first rotational isomers of stable selenoaldehydes are synthesized by deselenation of cyclic polyselenides having an efficient steric protection group, 2, 4, 6-tris[bis(trimetylsilyl)methyl]phenyl (Tbt). Reactions of these selenoaldehydes with W(CO)5*THF gives the corresponding η1-selenoaldehyde tungsten complexes, the structures of which are established by X-ray crystallography.

Syntheses, structures, and reactions of the first rotational isomers of stable selenobenzaldehydes, 2,4,6-tris[bis(trimethylsilyl)methyl]selenobenzaldehydes, and their η1-tungsten complexes

Deselenation of a cyclic polyselenide mixture, Tbt(s)CHSe(n) 5, resulted in the formation of Tbt(s)CHSe 3a, which gave its head-to-tail dimer 12 upon concentration of the reaction solution although it was stable in a dilute solution. Thermolysis of 12 gave an equilibrium mixture of 12, 3a, and its rotational isomer Tbt(a)CHSe 3b, and 3b was isolated as a solid stable even in air. Reaction of 3a and 3b with W(CO)5. THF gave the corresponding η1-selenoaldehyde tungsten complexes 4a and 4b, respectively. Some reactions of 4a were carried out to give products accompanied by decomplexation.

Die ersten Rotationsisomere stabiler Selenoaldehyde und ihre η1-Wolframkomplexe

Keywords: Rotationsisomerie; Selenverbindungen; Wolframverbindungen