Alkylidyne(carbaborane) Complexes of the Group 6 Metals. Part 1. Proton-induced Alkylidyne Ligand Migration

DOI: 10.1039/DT9920000393

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 393 - 400 (1992)

Update date:2022-08-03

Topics:

Authors:

Brew, Stephen A.

Devore, David D.

Jenkins, Paul D.

Pilotti, Massimino U.

Stone, F. Gordon A.

Read Full Text PDF DownLoad Join now for total 90,000,000 free articles

Article abstract of DOI:10.1039/DT9920000393

Treatment of carbon monoxide-saturated solutions of the salts 5-C2B9H9Me2)> (R = C6H4Me-4 or Me) at ca. -78 deg C with HBF4*Et2O affords the complexes 5-C2B9H8(CH2R)Me2>>.If these protonation reactions are carried out in the presence of PhCCPh, the alkynetungsten complexes 5-C2B9H8(CH2R)Me2>> are formed via the intermediacy of dicarbonyl species 5-C2B9H8(CH2R)Me2>>.The latter (R = C6H4Me-4) with PMe3 yields the compound 5-C2B9H8(CH2C6H4Me-4)Me2>>.Treatment of 5-C2B9H9Me2)> with HBF4*Et2O in the presence of CNBu^t yields t)2<η⁵-C2B9H8(CH2C6H4Me-4)Me2>>, whereas if PPh3 is used instead of CNBu^t a tricarbonyl species 5-C2B9H8(CH2C6H4Me-4)Me2>> is isolated.However, the latter disproportionates in solution to afford the bis(triphenylphosphine) complex 5-C2B9H8(CH2C6H4Me-4)Me2>>, crystals of which have been analysed by X-ray crystallography.The tungsten atom is η⁵ co-ordinated by the C2B9H8(CH2C6H4Me-4)Me2 ligand and is ligated by two CO and two PPh3 groups, having transoid arrangements.The CH2C6H4Me-4 substituent on the cage is bonded to the boron atom which is in the β site with respect to the two carbons in the open pentagonal CCBBB face of the nido-icosahedral C2B9 fragment.This geometry accounts for the NMR data (1H, 13C-<1H> and 11B-<1H> for all the new complexes reported containing the C2B9H8(CH2R)Me2 cage system.

Full text of DOI:10.1039/DT9920000393

View Online / Journal Homepage / Table of Contents for this issue

View Online

Products guided by the article

Product name:{W(CO)2(PhC2Ph)2(η5-C2B9H8(CH2C6H4Me-4)Me2)}

Cas No:141024-87-5

R&D Labs maybe for 141024-87-5

Taizhou Green Peptide Trading Co., Ltd.

Contact:13736652831

Address:Room 1501, No71, Yuehe Road, Taizhou City, Zhejiang Province, China
Shandong Zhongcheng Barium Salt Co., Ltd

Contact:+86-15725732638

Address:No.29 baoxi road, hi-tech zone, zibo, shandong
Zibo Kunran Enterprises Co. LTD

website:http://www.kunranchem.com

Contact:0086 533 5200669

Address:No. 96 Jinjing Avenue, Zibo, Shandong, China
WEIFANG RICHEM INTERNATIONAL LTD

Contact:86-536-2222176

Address:weifang,shandong
Yixing Bluwat Chemicals Co., Ltd.

Contact:+86 510 87821568

Address:Yongan Road, Yixing Chemical Industrial Park, Yixing, Jiangsu, China

Relevant to this article

Oxidative nucleophilic substitution of hydrogen in nitro(pentafluorosulfanyl)benzenes with alkyl Grignard and lithium reagents

Doi:10.1016/j.jfluchem.2012.04.001
(2012)
Doi:10.1021/jo01286a072
(1967)
Arylthio Amidation, Etherification, and Lactonization of Alkenes Promoted by Oxidation of Bis(4-methoxyphenyl) Disulfide with Ammonium Peroxydisulfate

Doi:10.1021/jo00040a056
(1992)
Synthesis, molecular, spectroscopic and catalytic characterization of ruthenium(II) complexes with pyridine-2-carboxylic acid derivatives ligands

Doi:10.1016/j.poly.2012.09.021
(2012)
Ca²⁺ ? Pb²⁺ exchange reaction of calcium silicate hydrate. Ca₅Si₆O₁₈H₂ · 4H₂O

Doi:10.1007/BF00544512
()
p-Nitrobenzoate Esters of Epoxy Alcohols: Convenient Synthons for Water-Soluble Epoxy Alcohols

Doi:10.1021/jo00380a032
(1987)

Article Doi