N-Phosphinoamidinato Silylene- and Phosphine-Borylborylene Complexes

Jun Fan; Ming Chung Yang; Ming Der Su; Cheuk Wai So

doi:10.1021/acs.inorgchem.2c03660

N-Phosphinoamidinato Silylene- and Phosphine-Borylborylene Complexes

Jun Fan, Ming Chung Yang, Ming Der Su, Cheuk Wai So^*

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

This work describes a straightforward method to synthesize a borylborylene without proceeding via the rearrangement of a diborene. An amidinato amidosilylene [LSiNMe₂] (L = PhC(NtBu)₂) and PMe₃ were reacted with an N-phosphinoamidinato diborane 1 and KC₈ to form a stable silylene-borylborylene 2 and a persistent phosphine-borylborylene 3, respectively. Compound 2 is stable as the borylene center is well stabilized by the silylene donor and boryl substituent, whereas compound 3 is unstable in solution due to labile PMe₃. The latter was illustrated by reacting compound 3 with Ar’NC (Ar’ = 2,6-Me₂C₆H₃), where Ar’NC displaced PMe₃ and inserted into the N-phosphinoamidinate ligand and B-B bond to form compound 4.

Original language	English
Pages (from-to)	863-870
Number of pages	8
Journal	Inorganic Chemistry
Volume	62
Issue number	2
DOIs	https://doi.org/10.1021/acs.inorgchem.2c03660
Publication status	Published - Jan 16 2023
Externally published	Yes

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Publisher Copyright:
© 2023 American Chemical Society.

ASJC Scopus Subject Areas

Physical and Theoretical Chemistry
Inorganic Chemistry

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title = "N-Phosphinoamidinato Silylene- and Phosphine-Borylborylene Complexes",

abstract = "This work describes a straightforward method to synthesize a borylborylene without proceeding via the rearrangement of a diborene. An amidinato amidosilylene [LSiNMe2] (L = PhC(NtBu)2) and PMe3 were reacted with an N-phosphinoamidinato diborane 1 and KC8 to form a stable silylene-borylborylene 2 and a persistent phosphine-borylborylene 3, respectively. Compound 2 is stable as the borylene center is well stabilized by the silylene donor and boryl substituent, whereas compound 3 is unstable in solution due to labile PMe3. The latter was illustrated by reacting compound 3 with Ar{\textquoteright}NC (Ar{\textquoteright} = 2,6-Me2C6H3), where Ar{\textquoteright}NC displaced PMe3 and inserted into the N-phosphinoamidinate ligand and B-B bond to form compound 4.",

author = "Jun Fan and Yang, {Ming Chung} and Su, {Ming Der} and So, {Cheuk Wai}",

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year = "2023",

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doi = "10.1021/acs.inorgchem.2c03660",

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T1 - N-Phosphinoamidinato Silylene- and Phosphine-Borylborylene Complexes

AU - Fan, Jun

AU - Yang, Ming Chung

AU - Su, Ming Der

AU - So, Cheuk Wai

PY - 2023/1/16

Y1 - 2023/1/16

N2 - This work describes a straightforward method to synthesize a borylborylene without proceeding via the rearrangement of a diborene. An amidinato amidosilylene [LSiNMe2] (L = PhC(NtBu)2) and PMe3 were reacted with an N-phosphinoamidinato diborane 1 and KC8 to form a stable silylene-borylborylene 2 and a persistent phosphine-borylborylene 3, respectively. Compound 2 is stable as the borylene center is well stabilized by the silylene donor and boryl substituent, whereas compound 3 is unstable in solution due to labile PMe3. The latter was illustrated by reacting compound 3 with Ar’NC (Ar’ = 2,6-Me2C6H3), where Ar’NC displaced PMe3 and inserted into the N-phosphinoamidinate ligand and B-B bond to form compound 4.

AB - This work describes a straightforward method to synthesize a borylborylene without proceeding via the rearrangement of a diborene. An amidinato amidosilylene [LSiNMe2] (L = PhC(NtBu)2) and PMe3 were reacted with an N-phosphinoamidinato diborane 1 and KC8 to form a stable silylene-borylborylene 2 and a persistent phosphine-borylborylene 3, respectively. Compound 2 is stable as the borylene center is well stabilized by the silylene donor and boryl substituent, whereas compound 3 is unstable in solution due to labile PMe3. The latter was illustrated by reacting compound 3 with Ar’NC (Ar’ = 2,6-Me2C6H3), where Ar’NC displaced PMe3 and inserted into the N-phosphinoamidinate ligand and B-B bond to form compound 4.

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N-Phosphinoamidinato Silylene- and Phosphine-Borylborylene Complexes

Abstract

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