Thermal Rearrangement Studies on Ethyl and Chloro Diethyl Derivatives of closo -2,4-C2B5H7: Elimination of a 1,2-Substituent-Shift Mechanistic Hypothesis and Further Support of the DSD Cage Rearrangement Mechanism

Wonwoo Nam; Zahid J. Abdou; Han Lee; Tereso Banuelos; Thomas Onak

doi:10.1021/ic00303a012

Thermal Rearrangement Studies on Ethyl and Chloro Diethyl Derivatives of closo -2,4-C₂B₅H₇: Elimination of a 1,2-Substituent-Shift Mechanistic Hypothesis and Further Support of the DSD Cage Rearrangement Mechanism

Wonwoo Nam, Zahid J. Abdou, Han Lee, Tereso Banuelos, Thomas Onak

Department of Chemistry & Nanoscience

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

8 Scopus citations

Abstract

The thermal (295–340 °C) rearrangement pattern for 3-Cl-5,6-(C₂H₅)₂-closo-2,4-C₂B₅H₄supports a DSD cage mechanism but, more importantly, rules out a 1,2-substituent-shift mechanism. The rate constants for the 295 °C rearrangement of 5-C₂H₅- closo-2,4-C₂B₅H₆and 5,6-(C₂H5)2-closo-2,4-C2B₅H₅are determined, and equilibrium percentages of the three 5-C₂H₅-2,4-C₂B₅H₆isomers and the five B,B’-(C₂H5)2-2,4-C₂B₅H5 isomers are obtained.

Original language	English
Pages (from-to)	669-675
Number of pages	7
Journal	Inorganic Chemistry
Volume	28
Issue number	4
DOIs	https://doi.org/10.1021/ic00303a012
State	Published - 1 Feb 1989

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@article{48367fccb9d0403e91076dd7a67893f7,

title = "Thermal Rearrangement Studies on Ethyl and Chloro Diethyl Derivatives of closo -2,4-C2B5H7: Elimination of a 1,2-Substituent-Shift Mechanistic Hypothesis and Further Support of the DSD Cage Rearrangement Mechanism",

abstract = "The thermal (295–340 °C) rearrangement pattern for 3-Cl-5,6-(C2H5)2-closo-2,4-C2B5H4supports a DSD cage mechanism but, more importantly, rules out a 1,2-substituent-shift mechanism. The rate constants for the 295 °C rearrangement of 5-C2H5- closo-2,4-C2B5H6and 5,6-(C2H5)2-closo-2,4-C2B5H5are determined, and equilibrium percentages of the three 5-C2H5-2,4-C2B5H6isomers and the five B,B{\textquoteright}-(C2H5)2-2,4-C2B5H5 isomers are obtained.",

author = "Wonwoo Nam and Abdou, {Zahid J.} and Han Lee and Tereso Banuelos and Thomas Onak",

year = "1989",

month = feb,

day = "1",

doi = "10.1021/ic00303a012",

language = "English",

volume = "28",

pages = "669--675",

journal = "Inorganic Chemistry",

issn = "0020-1669",

publisher = "American Chemical Society",

number = "4",

}

Thermal Rearrangement Studies on Ethyl and Chloro Diethyl Derivatives of closo -2,4-C₂B₅H₇: Elimination of a 1,2-Substituent-Shift Mechanistic Hypothesis and Further Support of the DSD Cage Rearrangement Mechanism. / Nam, Wonwoo; Abdou, Zahid J.; Lee, Han et al.
In: Inorganic Chemistry, Vol. 28, No. 4, 01.02.1989, p. 669-675.

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

TY - JOUR

T1 - Thermal Rearrangement Studies on Ethyl and Chloro Diethyl Derivatives of closo -2,4-C2B5H7

T2 - Elimination of a 1,2-Substituent-Shift Mechanistic Hypothesis and Further Support of the DSD Cage Rearrangement Mechanism

AU - Nam, Wonwoo

AU - Abdou, Zahid J.

AU - Lee, Han

AU - Banuelos, Tereso

AU - Onak, Thomas

PY - 1989/2/1

Y1 - 1989/2/1

N2 - The thermal (295–340 °C) rearrangement pattern for 3-Cl-5,6-(C2H5)2-closo-2,4-C2B5H4supports a DSD cage mechanism but, more importantly, rules out a 1,2-substituent-shift mechanism. The rate constants for the 295 °C rearrangement of 5-C2H5- closo-2,4-C2B5H6and 5,6-(C2H5)2-closo-2,4-C2B5H5are determined, and equilibrium percentages of the three 5-C2H5-2,4-C2B5H6isomers and the five B,B’-(C2H5)2-2,4-C2B5H5 isomers are obtained.

AB - The thermal (295–340 °C) rearrangement pattern for 3-Cl-5,6-(C2H5)2-closo-2,4-C2B5H4supports a DSD cage mechanism but, more importantly, rules out a 1,2-substituent-shift mechanism. The rate constants for the 295 °C rearrangement of 5-C2H5- closo-2,4-C2B5H6and 5,6-(C2H5)2-closo-2,4-C2B5H5are determined, and equilibrium percentages of the three 5-C2H5-2,4-C2B5H6isomers and the five B,B’-(C2H5)2-2,4-C2B5H5 isomers are obtained.

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U2 - 10.1021/ic00303a012

DO - 10.1021/ic00303a012

M3 - Article

AN - SCOPUS:24244433986

SN - 0020-1669

VL - 28

SP - 669

EP - 675

JO - Inorganic Chemistry

JF - Inorganic Chemistry

IS - 4

ER -