کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1305606 1499173 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis, characterisation and crystal structures of new water-soluble 1-alkanaminedicarbonyl(η5-cyclopentadienyl)ruthenium(II) tetrafluoroborate complex salts
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis, characterisation and crystal structures of new water-soluble 1-alkanaminedicarbonyl(η5-cyclopentadienyl)ruthenium(II) tetrafluoroborate complex salts
چکیده انگلیسی


• Stable and water soluble 1-alkanamine ruthenium(II) complex salts were synthesised.
• The complex salts were characterised by IR, NMR and X-ray crystallography.
• The 1-alkanamine is σ-bonded to the metal centre via nitrogen as the donor atom.
• The molecules are held together by N–H…F–B and C–H…F bonds.
• Molecules generally adopt the energetically favoured gauche type conformation.

New water-soluble 1-alkanaminedicarbonyl(η5-cyclopentadienyl)ruthenium(II) tetrafluoroborate complex salts, [CpRu(CO)2NH2R]+BF4− (Cp = η5-C5H5) (R = CH31, C2H52, C3H73, C4H94, C5H115 and C6H136), were synthesised by the reaction of the organometallic Lewis acid, [CpRu(CO)2]+BF4, with slight excesses of 1-alkanamines, RNH2, in dry methylene chloride at room temperature and pressure. These compounds are reported for the first time and have been fully characterised by IR, electrospray ionisation mass spectroscopy, 1H and 13C NMR spectroscopy, and elemental analysis. Spectral data show that the n-alkanamines are σ-bonded to the metal centre via the nitrogen atom. Complexes 2–5 were characterised by single crystal X-ray diffraction and all four cationic species feature a “pseudo-octahedral three-legged piano stool” structure in which the ruthenium centre is coordinated through a sigma bond to the amine N atom and two carbonyl ligands at the base of the stool and the cyclopentadienyl ring in the apex of the stool. IR studies showed that peaks of the νCO stretching vibrations shifted slightly to lower frequency as the carbon chain length increased. The melting point and percentage yields were observed to generally decrease with increase in n-value.

New water-soluble 1-alkanaminedicarbonyl(η5-cyclopentadienyl)ruthenium(II) tetrafluoroborate complex salts, [CpRu(CO)2NH2R]+BF4− (Cp = η5-C5H5) (R = CH31, C2H52, C3H73, C4H94, C5H115 and C6H136), were synthesised. These compounds have been fully characterised by IR, electrospray ionisation mass spectroscopy, 1H and 13C NMR spectroscopy, and elemental analysis. Spectral data show that the n-alkanamines are σ-bonded to the metal centre via the nitrogen atom. Complexes 2–5 were characterised by single crystal X-ray diffraction and all four cationic species feature a “pseudo-octahedral three-legged piano stool” structure in which the ruthenium centre is coordinated through a sigma bond to the amine N atom and two carbonyl ligands at the base of the stool and the cyclopentadienyl ring in the apex of the stool.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 415, 1 May 2014, Pages 44–51
نویسندگان
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