Building a picture of heteroborane isomerisation: Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph2-10-L-7,8-nido-C2B9H10 (L = SMe2, SMeEt, SEt2) and of intermediate and isomerised products arising from metallation of the first of these

Shirley Dunn; Rhona M. Garrioch; Georgina M. Rosair; Lorraine Smith; Alan J. Welch

Building a picture of heteroborane isomerisation: Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph₂-10-L-7,8-nido-C₂B₉H₁₀ (L = SMe₂, SMeEt, SEt₂) and of intermediate and isomerised products arising from metallation of the first of these

Shirley Dunn, Rhona M. Garrioch, Georgina M. Rosair, Lorraine Smith, Alan J. Welch

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Three new, substituted, nido carboranes, 7,8-Ph₂-10-(SMe₂)-7,8-nido-C₂B ₉H₁₀ (1a), 7,8-Ph₂-IO-(SMeEt)-7,8-nido-C₂B₉H_1o (1b) and 7,8-Ph₂-10-(SEt₂)-7,8-nido-C₂B ₉H₁₀ (1c) have been synthesised and characterised, including a crystallographic study of the first. Deprotonation of 1a followed by treatment with (MeCN)₂(CO)₂MoBr(p-C₃H₅) at 0 °C affords the non-icosahedral 1,2-Ph₂-4-(SMe₂)-5-(p-C₃H ₅)-5,5-(CO)₂-5,1,2-closo-MoC₂B ₉H₈ (2a), which on subsequent warming transforms into icosahedral 2,8-Ph₂-5-(SMe₂)-1-(p-C₃,H ₅)-1,1-(CO)₂-1,2,8-closo-MoC₂B ₉H₈ (3a). It is argued that under the conditions of these rearrangements the B-S bond is likely to remain intact, and consequently that the identity of the SMe₂-labelled boron atom in 3a affords useful experimental information on the course of the isomerisation.

Original language	English
Pages (from-to)	1013-1027
Number of pages	15
Journal	Collection of Czechoslovak Chemical Communications
Volume	64
Issue number	6
Publication status	Published - 1999

Keywords

Carboranes
Crystal structure
Isomerisation
Metallacarboranes, Molybdenacarboranes
NMR spectroscopy, 1H, 11B
X-ray diffraction

Fingerprint

Dive into the research topics of 'Building a picture of heteroborane isomerisation: Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph₂-10-L-7,8-nido-C₂B₉H₁₀ (L = SMe₂, SMeEt, SEt₂) and of intermediate and isomerised products arising from metallation of the first of these'. Together they form a unique fingerprint.

Cite this

Dunn, S., Garrioch, R. M., Rosair, G. M., Smith, L., & Welch, A. J. (1999). Building a picture of heteroborane isomerisation: Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph₂-10-L-7,8-nido-C₂B₉H₁₀ (L = SMe₂, SMeEt, SEt₂) and of intermediate and isomerised products arising from metallation of the first of these. Collection of Czechoslovak Chemical Communications, 64(6), 1013-1027.

Dunn, Shirley ; Garrioch, Rhona M. ; Rosair, Georgina M. et al. / Building a picture of heteroborane isomerisation : Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph₂-10-L-7,8-nido-C₂B₉H₁₀ (L = SMe₂, SMeEt, SEt₂) and of intermediate and isomerised products arising from metallation of the first of these. In: Collection of Czechoslovak Chemical Communications. 1999 ; Vol. 64, No. 6. pp. 1013-1027.

@article{2c991212d9954a9fabcf149ee3979e55,

title = "Building a picture of heteroborane isomerisation: Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph2-10-L-7,8-nido-C2B9H10 (L = SMe2, SMeEt, SEt2) and of intermediate and isomerised products arising from metallation of the first of these",

abstract = "Three new, substituted, nido carboranes, 7,8-Ph2-10-(SMe2)-7,8-nido-C2B 9H10 (1a), 7,8-Ph2-IO-(SMeEt)-7,8-nido-C2B9H1o (1b) and 7,8-Ph2-10-(SEt2)-7,8-nido-C2B 9H10 (1c) have been synthesised and characterised, including a crystallographic study of the first. Deprotonation of 1a followed by treatment with (MeCN)2(CO)2MoBr(p-C3H5) at 0 °C affords the non-icosahedral 1,2-Ph2-4-(SMe2)-5-(p-C3H 5)-5,5-(CO)2-5,1,2-closo-MoC2B 9H8 (2a), which on subsequent warming transforms into icosahedral 2,8-Ph2-5-(SMe2)-1-(p-C3,H 5)-1,1-(CO)2-1,2,8-closo-MoC2B 9H8 (3a). It is argued that under the conditions of these rearrangements the B-S bond is likely to remain intact, and consequently that the identity of the SMe2-labelled boron atom in 3a affords useful experimental information on the course of the isomerisation.",

keywords = "Carboranes, Crystal structure, Isomerisation, Metallacarboranes, Molybdenacarboranes, NMR spectroscopy, 1H, 11B, X-ray diffraction",

author = "Shirley Dunn and Garrioch, {Rhona M.} and Rosair, {Georgina M.} and Lorraine Smith and Welch, {Alan J.}",

year = "1999",

language = "English",

volume = "64",

pages = "1013--1027",

journal = "Collection of Czechoslovak Chemical Communications",

publisher = "Czech Academy of Sciences",

number = "6",

}

Dunn, S, Garrioch, RM, Rosair, GM, Smith, L & Welch, AJ 1999, 'Building a picture of heteroborane isomerisation: Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph₂-10-L-7,8-nido-C₂B₉H₁₀ (L = SMe₂, SMeEt, SEt₂) and of intermediate and isomerised products arising from metallation of the first of these', Collection of Czechoslovak Chemical Communications, vol. 64, no. 6, pp. 1013-1027.

Building a picture of heteroborane isomerisation: Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph₂-10-L-7,8-nido-C₂B₉H₁₀ (L = SMe₂, SMeEt, SEt₂) and of intermediate and isomerised products arising from metallation of the first of these. / Dunn, Shirley; Garrioch, Rhona M.; Rosair, Georgina M. et al.
In: Collection of Czechoslovak Chemical Communications, Vol. 64, No. 6, 1999, p. 1013-1027.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - Building a picture of heteroborane isomerisation

T2 - Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph2-10-L-7,8-nido-C2B9H10 (L = SMe2, SMeEt, SEt2) and of intermediate and isomerised products arising from metallation of the first of these

AU - Dunn, Shirley

AU - Garrioch, Rhona M.

AU - Rosair, Georgina M.

AU - Smith, Lorraine

AU - Welch, Alan J.

PY - 1999

Y1 - 1999

N2 - Three new, substituted, nido carboranes, 7,8-Ph2-10-(SMe2)-7,8-nido-C2B 9H10 (1a), 7,8-Ph2-IO-(SMeEt)-7,8-nido-C2B9H1o (1b) and 7,8-Ph2-10-(SEt2)-7,8-nido-C2B 9H10 (1c) have been synthesised and characterised, including a crystallographic study of the first. Deprotonation of 1a followed by treatment with (MeCN)2(CO)2MoBr(p-C3H5) at 0 °C affords the non-icosahedral 1,2-Ph2-4-(SMe2)-5-(p-C3H 5)-5,5-(CO)2-5,1,2-closo-MoC2B 9H8 (2a), which on subsequent warming transforms into icosahedral 2,8-Ph2-5-(SMe2)-1-(p-C3,H 5)-1,1-(CO)2-1,2,8-closo-MoC2B 9H8 (3a). It is argued that under the conditions of these rearrangements the B-S bond is likely to remain intact, and consequently that the identity of the SMe2-labelled boron atom in 3a affords useful experimental information on the course of the isomerisation.

AB - Three new, substituted, nido carboranes, 7,8-Ph2-10-(SMe2)-7,8-nido-C2B 9H10 (1a), 7,8-Ph2-IO-(SMeEt)-7,8-nido-C2B9H1o (1b) and 7,8-Ph2-10-(SEt2)-7,8-nido-C2B 9H10 (1c) have been synthesised and characterised, including a crystallographic study of the first. Deprotonation of 1a followed by treatment with (MeCN)2(CO)2MoBr(p-C3H5) at 0 °C affords the non-icosahedral 1,2-Ph2-4-(SMe2)-5-(p-C3H 5)-5,5-(CO)2-5,1,2-closo-MoC2B 9H8 (2a), which on subsequent warming transforms into icosahedral 2,8-Ph2-5-(SMe2)-1-(p-C3,H 5)-1,1-(CO)2-1,2,8-closo-MoC2B 9H8 (3a). It is argued that under the conditions of these rearrangements the B-S bond is likely to remain intact, and consequently that the identity of the SMe2-labelled boron atom in 3a affords useful experimental information on the course of the isomerisation.

KW - Carboranes

KW - Crystal structure

KW - Isomerisation

KW - Metallacarboranes, Molybdenacarboranes

KW - NMR spectroscopy, 1H, 11B

KW - X-ray diffraction

UR - http://www.scopus.com/inward/record.url?scp=0033439495&partnerID=8YFLogxK

M3 - Article

VL - 64

SP - 1013

EP - 1027

JO - Collection of Czechoslovak Chemical Communications

JF - Collection of Czechoslovak Chemical Communications

IS - 6

ER -

Dunn S, Garrioch RM, Rosair GM, Smith L, Welch AJ. Building a picture of heteroborane isomerisation: Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph₂-10-L-7,8-nido-C₂B₉H₁₀ (L = SMe₂, SMeEt, SEt₂) and of intermediate and isomerised products arising from metallation of the first of these. Collection of Czechoslovak Chemical Communications. 1999;64(6):1013-1027.

Building a picture of heteroborane isomerisation: Synthesis and characterisation of the 10-(dialkylsulfane)-7,8-diphenyl-7,8-dicarba-nido-undecaboranes 7,8-Ph2-10-L-7,8-nido-C2B9H10 (L = SMe2, SMeEt, SEt2) and of intermediate and isomerised products arising from metallation of the first of these

Abstract

Keywords

Other files and links

Fingerprint

Cite this