Organometalloidal Derivatives of the Transition Metals I

Pannell, Keith H.; Crawford, G. M.

doi:10.1080/00958977308072984

Cited by 52 publications

(17 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the tricoordinate nitrogen atoms in 8b, an essentially planar coordination geometry is observed in case of N(3) (sum of bond angles 355.9'). The more distorted geometries observed for N (3) and N(4) (sums of the angles = 353.9' and 347.9', respectively) may be related to stronger intramolecular interactions between the adjacent methyl groups and the methylene group of the ethoxy substituent (see Figure 1). As was found for Zd, the tricyclic skeleton of 8b shows virtual C3 symmetry, with an envelope conformation for each of the five-membered rings.…”

Section: Hmentioning

confidence: 93%

New azasilatranes: synthesis and substitution reactions

Gudat¹,

Verkade²

1989

Organometallics

View full text Add to dashboard Cite

The syntheses of new azasilatranes of the type XSi(NRCH2CH2)3N (R = H, X = OEt (2f), OPh (2g); R = Me, X = H (Sa), OEt (8b); R = SiMe3, X = H (9a)) via condensation reactions of tetraamines N(CH2CH2NHR)3 and substituted tris(dimethylamino)silanes, XSi(NMeJ3, are described. In the case of 2g, the required silane PhOSi(NMeJ3 was generated in situ from the reaction of PhOH and Si(NMez),. The chloroazasilatrane, 2h (R = H, X = Cl), whose synthesis was not feasible by the above method, was obtained by reaction of hydroazasilatrane, 2a (R = H, X = H), with CCl, in the presence of a platinum or palladium catalyst. Reaction of azasilatranes 2a and 2f with C1SiMe2R (R' = H, Me, Ph) in the presence of triethylamine affords the silyl-substituted azasilatranes XSi(N(SiMeZR')CH2CHJ3N (X = H, R' = H (9b), Me (9a), Ph (9c); X = OEt, R' = H (14a)) and XSi(N(SiMezR')CHzCHz)2NHCH2CH2N (X = OEt;R' = Me (14b), Ph (14d)), respectively, while no reaction was observed between either 2a or 2f and C1SiMe2-t-Bu. The new azasilatranes are characterized by 'H, 13C, and 29Si NMR spectroscopy, by high-resolution mass spectroscopy, and by an X-ray crystal structure determination in the case of 8b. , I , 1

show abstract

Section: Hmentioning

confidence: 93%

New azasilatranes: synthesis and substitution reactions

Gudat¹,

Verkade²

1989

Organometallics

View full text Add to dashboard Cite

show abstract

“…Trimethylamine N-oxide (Me 3 NO) (Aldrich) was sublimed prior to use and stored under Ar. The compounds, Co 2 (CO) 6 (l-g 2 -Me 3 SiC 2 CBCSiMe 3 ) [7], Co 2 (CO) 4 (l-dppm)(l-g 2 -Me 3 SiC 2 CBCH) [5], [Co 2 (CO) 4 (l-dppm)] 2 (l-g 2 -Me 3 SiC 2 (CBC) 2 C 2 SiMe 3 ) (1) [5], were prepared according to literature procedures. All reagents were used without further purification unless otherwise noted.…”

Section: Reagents and General Techniquesmentioning

confidence: 99%

Syntheses, structures and comparative electrochemical study of π-acetylene complexes of cobalt

Macazaga

Marcos

Moreno

et al. 2006

Journal of Organometallic Chemistry

View full text Add to dashboard Cite

“…[2]) without any evidence of [Fe(CO) 3 (PPh 3 )(η 2 -BTMSA)]. This despite the fact that the mass spectrum of the molecule showed stepwise loss of CO groups from the parent molecular ion and carbonyl-free Fe(BTMSA) + as the base ion fragment indicating that, under mass spectrometry conditions, the Fe-BTMSA bonding is stronger than that of Fe-CO (5). [2] [Fe(CO) 4 (BTMSA)] + 2PPh 3 → [Fe(CO) 3 …”

Section: Introductionmentioning

confidence: 63%

“…We have demonstrated that ligand substitution in [Fe(CO) 4 5 That electronic factors can also influence the outcome of the substitution is evidenced from the reaction of 3 with CO. Long-term reaction time leads to formation of [Fe(CO) 3 (PMe 3 ) 2 ] via loss of BTMSA.…”

Section: Resultsmentioning

confidence: 95%

See 1 more Smart Citation

Reaction of [Fe(CO)₄(η²-Me₃SiC≡CSiMe₃)] with PMe₃ CO rather than alkyne substitution

Dennett¹,

Ferguson²,

McDonald³

et al. 2005

Can. J. Chem.

View full text Add to dashboard Cite

Reaction of [Fe(CO) 4 (η 2 -BTMSA)] (1) (BTMSA = Me 3 SiCCSiMe 3 ) with trimethylphosphine proceeds by stepwise loss of CO ligands yielding [Fe(CO) 3 (PMe 3 )(η 2 -BTMSA)] (2) and [Fe(CO) 2 (PMe 3 ) 2 (η 2 -BTMSA)] (3), respectively. This demonstrates the CO dissociative nature of substitution in 1 toward PMe 3 , as established in analogous M(CO) 4 (η 2 -alkyne) (M = Fe, Ru, Os) compounds. The structures of all three compounds have been determined by X-ray crystallography to assess the effect of CO substitution by PMe 3 on the metal-alkyne bonding in these molecules. Résumé : La réaction du [Fe(CO) 4 (η 2 -BTMSA)] (1) (BTMSA = Me 3 SiCCSiMe 3 ) avec la triméthylphosphine se produit avec des pertes successives de ligands CO qui conduisent respectivement aux complexes [Fe(CO) 3 (PMe 3 )(η 2 -BTMSA)](2) et [Fe(CO) 2 (PMe 3 ) 2 (η 2 -BTMSA)] (3). Ces résultats confirment la nature dissociative du CO qui permet de le substituer dans le composé 1 par des groupes PMe 3 , tel qu'il avait été établi avec les analogues M(CO) 4 (η 2 -alcyne) (M = Fe, Ru, Os). Les structures des trois composés ont été déterminées par cristallographie aux rayons X afin d'évaluer l'effet de la substitution du CO par un PMe 3 sur la liaison métal-alcyne de ces molécules.

show abstract

Organometalloidal Derivatives of the Transition Metals I

Cited by 52 publications

References 9 publications

New azasilatranes: synthesis and substitution reactions

New azasilatranes: synthesis and substitution reactions

Syntheses, structures and comparative electrochemical study of π-acetylene complexes of cobalt

Reaction of [Fe(CO)₄(η²-Me₃SiC≡CSiMe₃)] with PMe₃ CO rather than alkyne substitution

Contact Info

Product

Resources

About

Organometalloidal Derivatives of the Transition Metals I

Cited by 52 publications

References 9 publications

New azasilatranes: synthesis and substitution reactions

New azasilatranes: synthesis and substitution reactions

Syntheses, structures and comparative electrochemical study of π-acetylene complexes of cobalt

Reaction of [Fe(CO)4(η2-Me3SiC≡CSiMe3)] with PMe3 CO rather than alkyne substitution

Contact Info

Product

Resources

About

Reaction of [Fe(CO)₄(η²-Me₃SiC≡CSiMe₃)] with PMe₃ CO rather than alkyne substitution