Synthesis and structures of M(Me3SiNCHNSiMe3) 3 (M = Al, Ga) via reactions of M-hydrides with Me 3SiNCNSiMe3

Cole Ritter; Andrew Chizmeshya; T. L. Gray; John Kouvetakis

doi:10.1002/aoc.1277

Synthesis and structures of M(Me₃SiNCHNSiMe₃) ₃ (M = Al, Ga) via reactions of M-hydrides with Me ₃SiNCNSiMe₃

Cole Ritter, Andrew Chizmeshya, T. L. Gray, John Kouvetakis

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

2 Scopus citations

Abstract

Reactions of LiAlR₄ and LiGaH₄ with Me ₃SiNCNSiMe₃ yield, respectively, the monomeric hexacoordinate Al(Me₃SiNCHNSiMe₃)₃ (1) and Ga(Me₃SiNCHNSiMe₃)₃, (2) metal amidinate compounds. A unique feature of the work is the creation of the previously unknown bidentate [Me₃SiNCHNSiMe₃] anion ligand which shows the propensity to fully encapsulate the Al and Ga metal centers despite potential steric crowding associated with the six-fold coordination. Compound 1 was also obtained by the reaction of (Me₃N)AlH₃ with Me3SiNCNSiMe3 via displacement of NMe₃ followed by reduction of the carbodiimide group. The structural properties of 1 and 2 derived from single crystal X-ray diffraction are elucidated and compared with various coordination analogs.

Original language	English (US)
Pages (from-to)	595-600
Number of pages	6
Journal	Applied Organometallic Chemistry
Volume	21
Issue number	7
DOIs	https://doi.org/10.1002/aoc.1277
State	Published - Jul 1 2007

Keywords

Amidinates
Cyanamide
Hexacoordinate aluminum and gallium

ASJC Scopus subject areas

Chemistry(all)
Inorganic Chemistry

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10.1002/aoc.1277

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title = "Synthesis and structures of M(Me3SiNCHNSiMe3) 3 (M = Al, Ga) via reactions of M-hydrides with Me 3SiNCNSiMe3",

abstract = "Reactions of LiAlR4 and LiGaH4 with Me 3SiNCNSiMe3 yield, respectively, the monomeric hexacoordinate Al(Me3SiNCHNSiMe3)3 (1) and Ga(Me3SiNCHNSiMe3)3, (2) metal amidinate compounds. A unique feature of the work is the creation of the previously unknown bidentate [Me3SiNCHNSiMe3] anion ligand which shows the propensity to fully encapsulate the Al and Ga metal centers despite potential steric crowding associated with the six-fold coordination. Compound 1 was also obtained by the reaction of (Me3N)AlH3 with Me3SiNCNSiMe3 via displacement of NMe3 followed by reduction of the carbodiimide group. The structural properties of 1 and 2 derived from single crystal X-ray diffraction are elucidated and compared with various coordination analogs.",

keywords = "Amidinates, Cyanamide, Hexacoordinate aluminum and gallium",

author = "Cole Ritter and Andrew Chizmeshya and Gray, {T. L.} and John Kouvetakis",

year = "2007",

month = jul,

day = "1",

doi = "10.1002/aoc.1277",

language = "English (US)",

volume = "21",

pages = "595--600",

journal = "Applied Organometallic Chemistry",

issn = "0268-2605",

publisher = "John Wiley and Sons Ltd",

number = "7",

}

TY - JOUR

T1 - Synthesis and structures of M(Me3SiNCHNSiMe3) 3 (M = Al, Ga) via reactions of M-hydrides with Me 3SiNCNSiMe3

AU - Ritter, Cole

AU - Chizmeshya, Andrew

AU - Gray, T. L.

AU - Kouvetakis, John

PY - 2007/7/1

Y1 - 2007/7/1

N2 - Reactions of LiAlR4 and LiGaH4 with Me 3SiNCNSiMe3 yield, respectively, the monomeric hexacoordinate Al(Me3SiNCHNSiMe3)3 (1) and Ga(Me3SiNCHNSiMe3)3, (2) metal amidinate compounds. A unique feature of the work is the creation of the previously unknown bidentate [Me3SiNCHNSiMe3] anion ligand which shows the propensity to fully encapsulate the Al and Ga metal centers despite potential steric crowding associated with the six-fold coordination. Compound 1 was also obtained by the reaction of (Me3N)AlH3 with Me3SiNCNSiMe3 via displacement of NMe3 followed by reduction of the carbodiimide group. The structural properties of 1 and 2 derived from single crystal X-ray diffraction are elucidated and compared with various coordination analogs.

AB - Reactions of LiAlR4 and LiGaH4 with Me 3SiNCNSiMe3 yield, respectively, the monomeric hexacoordinate Al(Me3SiNCHNSiMe3)3 (1) and Ga(Me3SiNCHNSiMe3)3, (2) metal amidinate compounds. A unique feature of the work is the creation of the previously unknown bidentate [Me3SiNCHNSiMe3] anion ligand which shows the propensity to fully encapsulate the Al and Ga metal centers despite potential steric crowding associated with the six-fold coordination. Compound 1 was also obtained by the reaction of (Me3N)AlH3 with Me3SiNCNSiMe3 via displacement of NMe3 followed by reduction of the carbodiimide group. The structural properties of 1 and 2 derived from single crystal X-ray diffraction are elucidated and compared with various coordination analogs.

KW - Amidinates

KW - Cyanamide

KW - Hexacoordinate aluminum and gallium

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