Synthesis and structural characterization of 2,6-bis(1,2,4-diazaphospholyl-1-yl)pyridine zinc and 2,6-bis(1,2,4-diazaphospholyl-1-yl)pyrazine copper complexes

Method for the Synthesis of Ferrocenylhydrazine and Its Properties and Reactivity

“…The sum of internal angles in each diazapnictole ring is 540° indicating its planarity. The lengths and angles of the internal bonds within the heterocyclic ring are very close to the data reported for other 1,2,4-diazaphospholes and 1,2,4-diazarsoles pointing to the delocalization of π-electrons over heteroaromatic system …”

“…Ferrocenylhydrazine 3 behaves similarly to phenylhydrazine also in the reaction with 1,3-bis­(dimethylamino)-2-pnictallylchlorides , giving not yet described (1,2,4-diazapnictol-1-yl) ferrocenes 6 and 7 ; see Scheme . Red-orange 6 and yellow 7 are sublimable compounds that are stable toward both hydrolysis and air-oxidation, and they are largely soluble in common organic solvents.…”

Germanium and Tin Monoxides Trapped by Oxophilic Germylene and Stannylene Ligands

“…This prompted us to explore the potential for capturing molecular SnO or even the lighter congener of GeO utilizing non-pincer ligands. In this context, we used the monoanionic 3,5-di- tert -butyl-1,2,4-diazaphospholide ligand ([3,5- t Bu 2 dp] − ) ( 1 – ) − to prepare the 1,2,4-diazaphospholide-based germylene and stannylene M­[η 2 ( N , N )-3,5- t Bu 2 dp] 2 (M = Ge ( 2 ), Sn ( 3 )) as molecular traps. Treating hydrolyzed Ge­[N­(SiMe 3 ) 2 ] 2 and Sn­[N­(SiMe 3 ) 2 ] 2 with 2 and 3 , respectively, resulted in the complex M­(μ-O)­[M­{η 1 ( N )-(3,5- t Bu 2 dp)} 2 ] 2 (M = Ge ( 4 ), Sn ( 5 )), which contained the formally trapped MO (M = Ge, Sn) moiety.…”