A (µ-hydrido)diborane(4) anion and its coordination chemistry with coinage metals

Xiaofeng Mao; Jie Zhang; Zhenpin Lu; Zuowei Xie

doi:10.1039/d2sc00318j

A (µ-hydrido)diborane(4) anion and its coordination chemistry with coinage metals

Xiaofeng Mao
, Jie Zhang
, Zhenpin Lu^*
, Zuowei Xie^*

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

8 Citations (Scopus)

Abstract

A tetra(o-tolyl) (μ-hydrido)diborane(4) anion 1, an analogue of [B₂H₅]⁻ species, was facilely prepared through the reaction of tetra(o-tolyl)diborane(4) with sodium hydride. Unlike common sp²–sp³ diborane species, 1 exhibited a σ-B–B bond nucleophilicity towards NHC-coordinated transition-metal (Cu, Ag, and Au) halides, resulting in the formation of η²-B–B bonded complexes 2 as confirmed by single-crystal X-ray analyses. Compared with 1, the structural data of 2 imply significant elongations of B–B bonds, following the order Au > Cu > Ag. DFT studies show that the diboron ligand interacts with the coinage metal through a three-center-two-electron B–M–B bonding mode. The fact that the B–B bond of the gold complex is much prolonged than the related Cu and Ag compounds might be ascribed to the superior electrophilicity of the gold atom.

Original language	English
Pages (from-to)	3009-3013
Number of pages	5
Journal	Chemical Science
Volume	13
Issue number	10
Early online date	11 Feb 2022
DOIs	https://doi.org/10.1039/d2sc00318j
Publication status	Published - 14 Mar 2022

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1039/d2sc00318j

Cite this

@article{facf6d4c7aec4cbdb06ba2d265a57784,

title = "A (µ-hydrido)diborane(4) anion and its coordination chemistry with coinage metals",

abstract = "A tetra(o-tolyl) (μ-hydrido)diborane(4) anion 1, an analogue of [B2H5]− species, was facilely prepared through the reaction of tetra(o-tolyl)diborane(4) with sodium hydride. Unlike common sp2–sp3 diborane species, 1 exhibited a σ-B–B bond nucleophilicity towards NHC-coordinated transition-metal (Cu, Ag, and Au) halides, resulting in the formation of η2-B–B bonded complexes 2 as confirmed by single-crystal X-ray analyses. Compared with 1, the structural data of 2 imply significant elongations of B–B bonds, following the order Au > Cu > Ag. DFT studies show that the diboron ligand interacts with the coinage metal through a three-center-two-electron B–M–B bonding mode. The fact that the B–B bond of the gold complex is much prolonged than the related Cu and Ag compounds might be ascribed to the superior electrophilicity of the gold atom.",

author = "Xiaofeng Mao and Jie Zhang and Zhenpin Lu and Zuowei Xie",

note = "Funding information: This work was supported by grants from the Research Grants Council of The Hong Kong Special Administration Region (Project No. 14303621 and 14307421). Publisher Copyright: {\textcopyright} 2022 The Author(s). Published by the Royal Society of Chemistry",

year = "2022",

month = mar,

day = "14",

doi = "10.1039/d2sc00318j",

language = "English",

volume = "13",

pages = "3009--3013",

journal = "Chemical Science",

issn = "2041-6520",

publisher = "Royal Society of Chemistry",

number = "10",

}

TY - JOUR

T1 - A (µ-hydrido)diborane(4) anion and its coordination chemistry with coinage metals

AU - Mao, Xiaofeng

AU - Zhang, Jie

AU - Lu, Zhenpin

AU - Xie, Zuowei

N1 - Funding information: This work was supported by grants from the Research Grants Council of The Hong Kong Special Administration Region (Project No. 14303621 and 14307421). Publisher Copyright: © 2022 The Author(s). Published by the Royal Society of Chemistry

PY - 2022/3/14

Y1 - 2022/3/14

N2 - A tetra(o-tolyl) (μ-hydrido)diborane(4) anion 1, an analogue of [B2H5]− species, was facilely prepared through the reaction of tetra(o-tolyl)diborane(4) with sodium hydride. Unlike common sp2–sp3 diborane species, 1 exhibited a σ-B–B bond nucleophilicity towards NHC-coordinated transition-metal (Cu, Ag, and Au) halides, resulting in the formation of η2-B–B bonded complexes 2 as confirmed by single-crystal X-ray analyses. Compared with 1, the structural data of 2 imply significant elongations of B–B bonds, following the order Au > Cu > Ag. DFT studies show that the diboron ligand interacts with the coinage metal through a three-center-two-electron B–M–B bonding mode. The fact that the B–B bond of the gold complex is much prolonged than the related Cu and Ag compounds might be ascribed to the superior electrophilicity of the gold atom.

AB - A tetra(o-tolyl) (μ-hydrido)diborane(4) anion 1, an analogue of [B2H5]− species, was facilely prepared through the reaction of tetra(o-tolyl)diborane(4) with sodium hydride. Unlike common sp2–sp3 diborane species, 1 exhibited a σ-B–B bond nucleophilicity towards NHC-coordinated transition-metal (Cu, Ag, and Au) halides, resulting in the formation of η2-B–B bonded complexes 2 as confirmed by single-crystal X-ray analyses. Compared with 1, the structural data of 2 imply significant elongations of B–B bonds, following the order Au > Cu > Ag. DFT studies show that the diboron ligand interacts with the coinage metal through a three-center-two-electron B–M–B bonding mode. The fact that the B–B bond of the gold complex is much prolonged than the related Cu and Ag compounds might be ascribed to the superior electrophilicity of the gold atom.

UR - https://www.scopus.com/pages/publications/85127164008

U2 - 10.1039/d2sc00318j

DO - 10.1039/d2sc00318j

M3 - Journal article

AN - SCOPUS:85127164008

SN - 2041-6520

VL - 13

SP - 3009

EP - 3013

JO - Chemical Science

JF - Chemical Science

IS - 10

ER -

A (µ-hydrido)diborane(4) anion and its coordination chemistry with coinage metals

Abstract

UN SDGs

Access to Document

Other files and links

Fingerprint

Cite this