Аннотация

New molecular niobium(IV) complexes NbCl 4 (OPPh 3 ) 2 (1) and NbBr 4 (OPPh 3 ) 2 (2) are synthesized by heating respective niobium pentahalide with a mixture of triphenylphosphine and triphenylphosphine oxide. For the obtained compounds the crystal structure is solved: 1P-1, a = 13.3540(5) Å, b = 9.4461(3) Å, c = 9.5635(3) Å, α = 93.084(1)°, β = 121.263(1)°, γ = 115.058(1)°, Z = 1, R 1 = 0.0194; 2P-1, a = 13.308(2) Å, b = 9.5934(8) Å, c = 9.5556(9) Å, α = 93.975(3),°, β = 119.391(4)°, γ = 114.740(4)°, Z = 1, R 1 = 0.0184. The unpaired electron is mainly located on the niobium atom, which is supported by quantum chemical calculations and EPR spectroscopic results.

Язык оригиналаанглийский
Страницы (с-по)457-465
Число страниц9
ЖурналJournal of Structural Chemistry
Том60
Номер выпуска3
DOI
СостояниеОпубликовано - 1 мар 2019

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