کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1312246 1499180 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure of bis(nitrato)tetrakis(pyrazole)cobalt(II): Fine tuning in the stabilization of coordination entities by using intramolecular hydrogen bonding
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Structure of bis(nitrato)tetrakis(pyrazole)cobalt(II): Fine tuning in the stabilization of coordination entities by using intramolecular hydrogen bonding
چکیده انگلیسی


• A tetragonal molecular structure with strong intramolecular hydrogen bonding.
• Intermolecular hydrogen bonding of nitrates anions competes with intramolecular hydrogen bonding.
• A correlation is observed between ν(N–H) and the donor–acceptor (N⋯O) contact distance.

The crystal and molecular structure of the title compound is presented and discussed in detail, and compared with some related pyrazole compounds. Focus is given on the often overlooked intramolecular hydrogen-bond stabilization that determines the structural conformation and also explains some unusual spectral properties. Ligand-field, EPR and infrared spectra are presented to illustrate the case on the title compound and also on a few related Cu(II) and Co(II) pyrazole-based compounds, compared with earlier reported Zn and Ni compounds. The observed N–H⋯O H-bond contacts correlate with the observed N–H stretching vibrations.

The nitrate anion in bis(nitrato)tetrakis(pyrazole)cobalt has a special role in intermolecular and intramolecular hydrogen bond stabilization.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 407, 1 October 2013, Pages 7–10
نویسندگان
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