ChemInform Abstract: SYNTHESIS AND STRUCTURE OF AN η2‐PHOSPHAALKENE NICKEL COMPLEX

Cowley, Alan H.; Jones, R. A.; Stewart, Constantine A.; Stuart, Anthony L.; Atwood, Jerry L.; Hunter, William E.; Zhang, H.‐M.

doi:10.1002/chin.198336332

Cited by 3 publications

(10 citation statements)

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Section: Resultsmentioning

confidence: 99%

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Synthesis and structures of free and coordinated phosphaalkenes

Cowley¹,

Jones²,

Lasch³

et al. 1984

J. Am. Chem. Soc.

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7015In summary, the use of the t-Bu,CO-group permits the stabilization of low-coordinate transition-metal complexes which display novel geometries and can contain close Li-CH, interactions. The steric bulk of the ligand prevents the formation of multiply bridged manganese chains which result when less sterically demanding groups such as t-Bu2CHO-or mesityl are used.The tri-tert-butylmethoxide ligand can be incorporated into transition-metal complexes by exchange with metal amides or by treating the lithium alkoxide with metal halides. These two methods permit the formation of different species even when a similar solvent system is employed.We are currently investigating the properties of the t-Bu,COligand with later first-row transition metals and will present our results in a future arti~1e.I~ Acknowledgment.

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Section: Resultsmentioning

confidence: 99%

“…Preparation of (Me3Si)2C=P (2,4,3C6H2) (4). A stirred solution of 3.33 g (14.8 mmol) of 3 in 30 mL of /¡-hexane was cooled to -40 °C and was treated with a solution of 14.5 mmol of 2,4,3C6H2Li in 30 mL of THF. All solvent and volatiles were stripped from the reaction mixture after allowing it to warm to room temperature.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and structures of free and coordinated phosphaalkenes

Cowley¹,

Jones²,

Lasch³

et al. 1984

J. Am. Chem. Soc.

Self Cite

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show abstract

“…The Li atom may be responsible for reducing the 0(1)-Mn-0(2) angle to 86. 4 (2)°. This behavior has also been observed in the distorted T-shaped complex 1 where the Cl-Cr-0(2) angle is 91.1 (2)°.…”

Section: Resultsmentioning

confidence: 99%

“…The different structures for 4 and 5 are probably due to two reasons. Firstly, in 4 the bis(trimethylsilyl)amido group is very sterically demanding and prevents further association. Secondly, in 5 the presence of MnBr2(THF)2 in the reaction mixture permits halide bridging to a lithium atom; in addition, the lower steric requirements of two bromide atoms compared with N(SiMe3)2™ permit higher coordination at the manganese center.…”

Section: Resultsmentioning

confidence: 99%