Synthesis and characterisation of mono-acetylide and unsymmetrical bis-acetylide complexes of ruthenium and osmium: X-ray structure determinations on [(dppe)2Ru(Cl)(C≡C-C6H4-p-NO 2)], [(dppe)2Ru(Cl)(C≡C-C6H3-o-CH 3-p-NO2)]

Muhammad Younus, Nicholas J. Long*, Paul R. Raithby, Jack Lewis, Nicola A. Page, Andrew J.P. White, David J. Williams, Michael C.B. Colbert, Andrew J. Hodge, Muhammad S. Khan, David G. Parker

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةArticleمراجعة النظراء

58 اقتباسات (Scopus)

ملخص

The synthesis of a series of metal mono-acetylides trans-[(dppe)2Ru(Cl)(C≡C-R)] (R = C6H4-p-C6H5, C6H4-p-CH3, C6H4-p-NO2, C6H3-o-CH3-p-NO2, dppe = Ph2PCH2CH2PPh2), and unsymmetrical metal bis-acetylides trans-[(dppm)2M(C≡C-R)(C≡C-R′)]; (M = Ru, Os; R = C6H4-p-NO2, R′ = C6H5, C6H4-p-CH3; R = C6H5, R′ = C6H4-p-C6H3) using a variety of σ-acetylide coupling reactions is reported. Three compounds have been structurally characterised, including the unsymmetrical trans-[(dppm)2Os(C≡C-R)(C≡C-R′)] (R = C6H4-p-CH3, R′ = C6H4-p-NO2] which shows the 'rigid-rod' nature of the acetylide-metal-acetylide linkage. The electrochemistry of symmetrical and unsymmetrical Ru(II) complexes demonstrates the role of the acetylide and the auxiliary ligands in determining the ease of oxidation at the metal centre whilst UV-vis spectral changes illustrate the influence of electron-withdrawing and -donating ligands.

اللغة الأصليةEnglish
الصفحات (من إلى)198-209
عدد الصفحات12
دوريةJournal of Organometallic Chemistry
مستوى الصوت578
رقم الإصدار1-2
المعرِّفات الرقمية للأشياء
حالة النشرPublished - أبريل 22 1999

ASJC Scopus subject areas

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بصمة

أدرس بدقة موضوعات البحث “Synthesis and characterisation of mono-acetylide and unsymmetrical bis-acetylide complexes of ruthenium and osmium: X-ray structure determinations on [(dppe)2Ru(Cl)(C≡C-C6H4-p-NO 2)], [(dppe)2Ru(Cl)(C≡C-C6H3-o-CH 3-p-NO2)]'. فهما يشكلان معًا بصمة فريدة.

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