Kinetics and Mechanism of the Acetate-Catalyzed Heterolysis of the Metal-Carbon σ Bond of (α-Hydroxyalkyl)Chromium(III) Complexes. Effects of Nonparticipating Ligands, Temperature, and Pressure

Haim Cohen, Wolfgang Gaede, Achim Gerhard, Dan Meyerstein, Rudi van Eldik

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

19 اقتباسات (Scopus)

ملخص

The acetate-catalyzed heterolysis reaction of two (a-hydroxyalkyl)chromium(III) complexes, CrIII-CH2OH and CrIII-C(CH3)2OH, with three types of nonparticipating ligands (H2O)5Cr-R2+, irons-([15]aneN4)(H2O)Cr-R2+, and cis-(nta)(H2O)Cr-R-, has been studied as a function of acetate concentration, temperature, and pressure. The reported rate and activation parameters demonstrate that the catalytic effect results from a trans-labilization effect by coordinated acetate and involves the attack by a solvent water molecule on the metal-carbon bond. The positive volumes of activation support the operation of a dissociatively activated heterolysis mechanism, which is in line with the suggested labilization effect by coordinated acetate.

اللغة الأصليةالإنجليزيّة
الصفحات (من إلى)3805-3809
عدد الصفحات5
دوريةInorganic Chemistry
مستوى الصوت31
رقم الإصدار18
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 1992
منشور خارجيًانعم

بصمة

أدرس بدقة موضوعات البحث “Kinetics and Mechanism of the Acetate-Catalyzed Heterolysis of the Metal-Carbon σ Bond of (α-Hydroxyalkyl)Chromium(III) Complexes. Effects of Nonparticipating Ligands, Temperature, and Pressure'. فهما يشكلان معًا بصمة فريدة.

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