Sterics level the rates of proton transfer to [Ni(XPh){PhP(CH2CH2PPh2)2}]? (X = O, S or Se).

Sterics level the rates of proton transfer to [Ni(XPh){PhP(CH2CH2PPh2)2}]? (X = O, S or Se).
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立体结构将质子转移至 [Ni(XPh){PhP(CH2CH2PPh2)2}] 的速率平衡?

DOI:
10.1039/c4cc04197f
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发表时间:
2014
期刊:
Chemical communications (Cambridge, England)
影响因子:
--
通讯作者:
Alwaaly A
Alwaaly A
中科院分区:
--
文献类型:
--
作者:
Alwaaly A

文献摘要

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在lutH+(lut = 2,6-二甲基吡啶)和[Ni(XPh)(PhP{CH 2CH 2 PPh 2}2)]+(X = O、S或Se)之间的质子转移速率是缓慢的并且显示出很小的变化(kO:kS:kSe = 1:12:9)。        这种不寻常的行为是影响质子转移之前反应物之间的最佳相互作用的空间位阻的结果。
Rates of proton transfers between lutH+ (lut = 2,6-dimethylpyridine) and [Ni(XPh)(PhP{CH2CH2PPh2}2)]+ (X = O, S or Se) are slow and show little variation (kO : kS : kSe = 1 : 12 : 9). This unusual behaviour is a consequence of sterics affecting the optimal interaction between the reactants prior to proton transfer.