Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline
remove_circle_outline

Journals

Article Types

Countries / Regions

Search Results (2)

Search Parameters:
Keywords = octahydrotriborate

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
12 pages, 3916 KiB  
Article
Synthesis, Structure and Bonding of the Tungstaboranes [Cp*W(CO)2B3H8] and [(Cp*W)3(CO)2B4H7]
by Stutee Mohapatra, Sourav Gayen, Sampad Shyamal, Jean-François Halet and Sundargopal Ghosh
Inorganics 2023, 11(6), 248; https://doi.org/10.3390/inorganics11060248 - 7 Jun 2023
Cited by 3 | Viewed by 1943
Abstract
The structure and bonding of two novel tungstaboranes which were synthesized using diverse synthetic methods are described. (i) The room-temperature photolysis of [Cp*W(CO)3Me] with [BH3·SMe2] led to the isolation of the hydrogen-rich tungstaborane [Cp*W(CO)2B3 [...] Read more.
The structure and bonding of two novel tungstaboranes which were synthesized using diverse synthetic methods are described. (i) The room-temperature photolysis of [Cp*W(CO)3Me] with [BH3·SMe2] led to the isolation of the hydrogen-rich tungstaborane [Cp*W(CO)2B3H8] (1). Its geometry consists of an arachno butterfly core similar to tetraborane(10) and obeys the Wade-Mingos electron counting rules (n vertices, n + 3 skeletal electron pairs (seps)). (ii) Further, the tungstaborane [(Cp*W)3(μ-H)2(μ3-H)(μ-CO)2B4H4] (4) was isolated by thermolysis reaction of a tungsten intermediate, obtained by low temperature reaction of [Cp*WCl4] and [LiBH4·THF] with [Cr(CO)5·THF]. Compound 4 which seems to have formed by replacement of a BH unit in [(Cp*W)2B5H9] by the isoelectronic fragment {Cp*W(CO)2}, adopts an oblato-nido hexagonal-bipyramidal core (n vertices, n–1 seps). Both compounds were characterized using multinuclear NMR, IR spectroscopy, mass spectrometry as well as single crystal X-ray diffraction analysis. In addition, density functional theory (DFT) calculations were performed in order to elucidate their bonding and electronic structures. Full article
(This article belongs to the Special Issue Fifth Element: The Current State of Boron Chemistry)
Show Figures

Graphical abstract

13 pages, 1934 KiB  
Article
Nucleophilic Substitution Reactions in the [B3H8] Anion in the Presence of Lewis Acids
by Alexandra T. Shulyak, Evgeniy O. Bortnikov, Nikita A. Selivanov, Mikhail S. Grigoriev, Alexey S. Kubasov, Andrey P. Zhdanov, Alexander Y. Bykov, Konstantin Y. Zhizhin and Nikolai T. Kuznetsov
Molecules 2022, 27(3), 746; https://doi.org/10.3390/molecules27030746 - 24 Jan 2022
Cited by 2 | Viewed by 3320
Abstract
As a result of our study on the interaction between the octahydrotriborate anion with nucleophiles (Nu = THF, Ph3P, Ph2P-(CH2)2-PPh2 (dppe), Ph3As, Et3N, PhNH2, C5H5 [...] Read more.
As a result of our study on the interaction between the octahydrotriborate anion with nucleophiles (Nu = THF, Ph3P, Ph2P-(CH2)2-PPh2 (dppe), Ph3As, Et3N, PhNH2, C5H5N, CH3CN, Ph2CHCN)) in the presence of a wide range of Lewis acids (Ti(IV), Hf(IV), Zr(IV), Al, Cu(I), Zn, Mn(II), Co(II) halides and iodine), a number of substituted derivatives of the octahydrotriborate anion [B3H7Nu] are obtained. It is found that the use of TiCl4, AlCl3, ZrCl4, HfCl4, CuCl and iodine leads to the highest product yields. In this case, it is most likely that the reaction proceeds through the formation of an intermediate [B3H7-HMXnx], which was detected by NMR spectroscopy. The structures of [Ph3P·B3H7] and [PhNH2·B3H7] were determined by X-ray diffraction. Full article
Show Figures

Graphical abstract

Back to TopTop