Synthesis and structural investigations of some alkylamine pentacyanoferrate(II) complexes |
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| Affiliation: | 1. Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, Anhui, PR China;2. Department of Theoretical Chemistry and Biology, School of Biotechnology, Royal Institute of Technology, S-106 91 Stockholm, Sweden;3. College of Physics and Electronic, Shandong Normal University, Jinan 250014, PR China;1. Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev Str. 9, BG-1113 Sofia, Bulgaria;2. Department of Chemistry, University of Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland;1. School of Chemistry, Main Building, Cardiff University, Museum Avenue, Cardiff, CF10 3AT, United Kingdom;2. UK National Crystallographic Service, Chemistry, Faculty of Natural and Environmental Sciences, University of Southampton, Highfield, Southampton, England, SO17 1BJ, United Kingdom |
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| Abstract: | A series of alkylamine pentacyanoferrate(II) complexes, Na3[Fe(CN)5L]·(H2O)x, where L = (CH3)2NH, (C2H5)2NH, (C3H7)2NH, (C4H9)2NH, (C6H5)2NH, (C2H5)3N, (C4H9)3N or C6H11NH2, were synthesized and characterized by analysis, magnetic, IR and Mössbauer spectroscopic studies. Characteristic CN and FeCN vibrational frequencies were found to be affected by the nature of the substituent. Mössbauer spectra exhibited a two-line quadrupole doublet with isomer shifts (δ) − 0.04 to 0.49 mm s−1 (relative to sodium nitroprusside) and quadrupole splitting (ΔEQ) of 0.73–1.92 mm s−1. A correlation of δ vs ΔEQ has been attempted and the sign of the electric field gradient predicted. Bonding characteristics seem to change from simple mono- and dialkylamines to bulky di- and trialkylamines in pentacyanoferrate(II) complexes. |
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