Closo and semipseudocloso forms of the same carbametallaborane: Synthesis and spectroscopic and crystallographic characterisation of 1-CCPh-2-Ph-3-(η-L)-3,1,2-RhC2B9H9 (L=C5H5 and C5Me5): Part 25. Steric effects in heteroboranes

Rhona M. Garrioch; Georgina M. Rosair; Alan J. Welch

Closo and semipseudocloso forms of the same carbametallaborane: Synthesis and spectroscopic and crystallographic characterisation of 1-CCPh-2-Ph-3-(η-L)-3,1,2-RhC₂B₉H₉ (L=C₅H₅ and C₅Me₅): Part 25. Steric effects in heteroboranes

Rhona M. Garrioch, Georgina M. Rosair, Alan J. Welch

School of Engineering & Physical Sciences

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

16 Citations (Scopus)

Abstract

The compounds of 1-CCPh-2-Ph-3-(?-L)-3,1,2-RhC₂B₉H₉ (L=C₅H₅, 1, and C₅Me₅, 2) have been prepared. The weighted average ¹¹B-NMR chemical shift (11B>) for 1 is +2.53 ppm, suggesting that the cage is distorted into a semipseudocloso structure. For 2 in CDCl₃ 11B> is -0.7 ppm, between that anticipated for semipseudocloso and closo forms. Compound 2 crystallises in two different forms. Orange 2a is semipseudocloso, with C(1)-C(2) 2.052(5) Å, whilst yellow 2b is essentially closo, with C(1)-C(2) 1.828(7) Å. Dissolution of both 2a and 2b in CDCl₃ affords an identical solution. © 2000 Elsevier Science B.V.

Original language	English
Pages (from-to)	153-157
Number of pages	5
Journal	Journal of Organometallic Chemistry
Volume	614-615
Publication status	Published - 8 Dec 2000

Keywords

Carbametallaborane
Closo
Crystallographic characterisation
Pseudocloso
Semipseudocloso

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@article{5fdd8a9951e34fd1a030d004ff813d7f,

title = "Closo and semipseudocloso forms of the same carbametallaborane: Synthesis and spectroscopic and crystallographic characterisation of 1-CCPh-2-Ph-3-(η-L)-3,1,2-RhC2B9H9 (L=C5H5 and C5Me5): Part 25. Steric effects in heteroboranes",

abstract = "The compounds of 1-CCPh-2-Ph-3-(?-L)-3,1,2-RhC2B9H9 (L=C5H5, 1, and C5Me5, 2) have been prepared. The weighted average 11B-NMR chemical shift (11B>) for 1 is +2.53 ppm, suggesting that the cage is distorted into a semipseudocloso structure. For 2 in CDCl3 11B> is -0.7 ppm, between that anticipated for semipseudocloso and closo forms. Compound 2 crystallises in two different forms. Orange 2a is semipseudocloso, with C(1)-C(2) 2.052(5) {\AA}, whilst yellow 2b is essentially closo, with C(1)-C(2) 1.828(7) {\AA}. Dissolution of both 2a and 2b in CDCl3 affords an identical solution. {\textcopyright} 2000 Elsevier Science B.V.",

keywords = "Carbametallaborane, Closo, Crystallographic characterisation, Pseudocloso, Semipseudocloso",

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

year = "2000",

month = dec,

day = "8",

language = "English",

volume = "614-615",

pages = "153--157",

journal = "Journal of Organometallic Chemistry",

issn = "0022-328X",

publisher = "Elsevier",

}

Closo and semipseudocloso forms of the same carbametallaborane : Synthesis and spectroscopic and crystallographic characterisation of 1-CCPh-2-Ph-3-(η-L)-3,1,2-RhC₂B₉H₉ (L=C₅H₅ and C₅Me₅): Part 25. Steric effects in heteroboranes. / Garrioch, Rhona M.; Rosair, Georgina M.; Welch, Alan J.

In: Journal of Organometallic Chemistry, Vol. 614-615, 08.12.2000, p. 153-157.

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

TY - JOUR

T1 - Closo and semipseudocloso forms of the same carbametallaborane

T2 - Synthesis and spectroscopic and crystallographic characterisation of 1-CCPh-2-Ph-3-(η-L)-3,1,2-RhC2B9H9 (L=C5H5 and C5Me5): Part 25. Steric effects in heteroboranes

AU - Garrioch, Rhona M.

AU - Rosair, Georgina M.

AU - Welch, Alan J.

PY - 2000/12/8

Y1 - 2000/12/8

N2 - The compounds of 1-CCPh-2-Ph-3-(?-L)-3,1,2-RhC2B9H9 (L=C5H5, 1, and C5Me5, 2) have been prepared. The weighted average 11B-NMR chemical shift (11B>) for 1 is +2.53 ppm, suggesting that the cage is distorted into a semipseudocloso structure. For 2 in CDCl3 11B> is -0.7 ppm, between that anticipated for semipseudocloso and closo forms. Compound 2 crystallises in two different forms. Orange 2a is semipseudocloso, with C(1)-C(2) 2.052(5) Å, whilst yellow 2b is essentially closo, with C(1)-C(2) 1.828(7) Å. Dissolution of both 2a and 2b in CDCl3 affords an identical solution. © 2000 Elsevier Science B.V.

AB - The compounds of 1-CCPh-2-Ph-3-(?-L)-3,1,2-RhC2B9H9 (L=C5H5, 1, and C5Me5, 2) have been prepared. The weighted average 11B-NMR chemical shift (11B>) for 1 is +2.53 ppm, suggesting that the cage is distorted into a semipseudocloso structure. For 2 in CDCl3 11B> is -0.7 ppm, between that anticipated for semipseudocloso and closo forms. Compound 2 crystallises in two different forms. Orange 2a is semipseudocloso, with C(1)-C(2) 2.052(5) Å, whilst yellow 2b is essentially closo, with C(1)-C(2) 1.828(7) Å. Dissolution of both 2a and 2b in CDCl3 affords an identical solution. © 2000 Elsevier Science B.V.

KW - Carbametallaborane

KW - Closo

KW - Crystallographic characterisation

KW - Pseudocloso

KW - Semipseudocloso

M3 - Article

VL - 614-615

SP - 153

EP - 157

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

SN - 0022-328X

ER -