Synthesis and structural characterization of terminal (diisopropylamino)borylene complexes of group 8 metals

Dragoslav Vidovic, Glesni A Pierce, Natalie D Coombs, Deborah L Kays, Amber L Thompson, Andreas Stasch, Simon Aldridge

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Abstract

The syntheses and first structural characterization of terminal (diisopropylamino)borylene complexes are reported. The 11B NMR chemical shifts for these novel systems (I B 93.8 and 90.2 for [Cpa??Fe(CO)2(BNiPr2)][BArf 4 ], 3, and [CpRu(CO)2(BNiPr2)][BArf 4 ], 4, respectively) are ca. 40 ppm downfield of those measured for the boryl precursor complexes,consistent with observations for related trimethylsilyl and cyclohexylamino substituted compounds. Structurally, the linearity of the M a?? B a?? N fragment in each case and the marked shortening of the M a?? B bonds (cf. the single bonds found in boryl complexes CpFe(CO)2(BNiPr2)Cl, 1b, and CpRu(CO)2(BNiPr2)Cl, 2) reflect the fact that the M a?? B bond order in borylene systems 3 and 4 is between one and two.
Original languageEnglish
Pages (from-to)57 - 65
Number of pages9
JournalMain Group Chemistry
Volume9
DOIs
Publication statusPublished - 2010

Cite this

Vidovic, Dragoslav ; Pierce, Glesni A ; Coombs, Natalie D ; Kays, Deborah L ; Thompson, Amber L ; Stasch, Andreas ; Aldridge, Simon. / Synthesis and structural characterization of terminal (diisopropylamino)borylene complexes of group 8 metals. In: Main Group Chemistry. 2010 ; Vol. 9. pp. 57 - 65.
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title = "Synthesis and structural characterization of terminal (diisopropylamino)borylene complexes of group 8 metals",
abstract = "The syntheses and first structural characterization of terminal (diisopropylamino)borylene complexes are reported. The 11B NMR chemical shifts for these novel systems (I B 93.8 and 90.2 for [Cpa??Fe(CO)2(BNiPr2)][BArf 4 ], 3, and [CpRu(CO)2(BNiPr2)][BArf 4 ], 4, respectively) are ca. 40 ppm downfield of those measured for the boryl precursor complexes,consistent with observations for related trimethylsilyl and cyclohexylamino substituted compounds. Structurally, the linearity of the M a?? B a?? N fragment in each case and the marked shortening of the M a?? B bonds (cf. the single bonds found in boryl complexes CpFe(CO)2(BNiPr2)Cl, 1b, and CpRu(CO)2(BNiPr2)Cl, 2) reflect the fact that the M a?? B bond order in borylene systems 3 and 4 is between one and two.",
author = "Dragoslav Vidovic and Pierce, {Glesni A} and Coombs, {Natalie D} and Kays, {Deborah L} and Thompson, {Amber L} and Andreas Stasch and Simon Aldridge",
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volume = "9",
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journal = "Main Group Chemistry",
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Synthesis and structural characterization of terminal (diisopropylamino)borylene complexes of group 8 metals. / Vidovic, Dragoslav; Pierce, Glesni A; Coombs, Natalie D; Kays, Deborah L; Thompson, Amber L; Stasch, Andreas; Aldridge, Simon.

In: Main Group Chemistry, Vol. 9, 2010, p. 57 - 65.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Synthesis and structural characterization of terminal (diisopropylamino)borylene complexes of group 8 metals

AU - Vidovic, Dragoslav

AU - Pierce, Glesni A

AU - Coombs, Natalie D

AU - Kays, Deborah L

AU - Thompson, Amber L

AU - Stasch, Andreas

AU - Aldridge, Simon

PY - 2010

Y1 - 2010

N2 - The syntheses and first structural characterization of terminal (diisopropylamino)borylene complexes are reported. The 11B NMR chemical shifts for these novel systems (I B 93.8 and 90.2 for [Cpa??Fe(CO)2(BNiPr2)][BArf 4 ], 3, and [CpRu(CO)2(BNiPr2)][BArf 4 ], 4, respectively) are ca. 40 ppm downfield of those measured for the boryl precursor complexes,consistent with observations for related trimethylsilyl and cyclohexylamino substituted compounds. Structurally, the linearity of the M a?? B a?? N fragment in each case and the marked shortening of the M a?? B bonds (cf. the single bonds found in boryl complexes CpFe(CO)2(BNiPr2)Cl, 1b, and CpRu(CO)2(BNiPr2)Cl, 2) reflect the fact that the M a?? B bond order in borylene systems 3 and 4 is between one and two.

AB - The syntheses and first structural characterization of terminal (diisopropylamino)borylene complexes are reported. The 11B NMR chemical shifts for these novel systems (I B 93.8 and 90.2 for [Cpa??Fe(CO)2(BNiPr2)][BArf 4 ], 3, and [CpRu(CO)2(BNiPr2)][BArf 4 ], 4, respectively) are ca. 40 ppm downfield of those measured for the boryl precursor complexes,consistent with observations for related trimethylsilyl and cyclohexylamino substituted compounds. Structurally, the linearity of the M a?? B a?? N fragment in each case and the marked shortening of the M a?? B bonds (cf. the single bonds found in boryl complexes CpFe(CO)2(BNiPr2)Cl, 1b, and CpRu(CO)2(BNiPr2)Cl, 2) reflect the fact that the M a?? B bond order in borylene systems 3 and 4 is between one and two.

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U2 - 10.3233/MGC-2010-0005

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EP - 65

JO - Main Group Chemistry

JF - Main Group Chemistry

SN - 1024-1221

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