کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1339625 979711 2008 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis and spectroscopic characterization of piperidine/chloranil and piperidine/7,7′,8,8′-tetracyanoquinodimethane charge transfer complexes: X-ray crystal structure of a 7,7-dicyano-8,8-di-piperidinoquinodimethane adduct
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Synthesis and spectroscopic characterization of piperidine/chloranil and piperidine/7,7′,8,8′-tetracyanoquinodimethane charge transfer complexes: X-ray crystal structure of a 7,7-dicyano-8,8-di-piperidinoquinodimethane adduct
چکیده انگلیسی

Charge transfer reactions of piperidine with p-chloranil (CHL) and 7,7′,8,8′-tetracyanoquinodimethane (TCNQ) in chloroform have produced stable complexes with the general formula [(Pip)2(acceptor)] with a 1:2 acceptor:donor molar ratio. Elemental analysis (CHN), electronic spectra, photometric titration, mid infrared spectra, 1H NMR spectra and thermogravimetric analysis (TGA/DTG) were used to predict the position of the charge transfer interaction between the donating and accepting sites. The crystal structure of the Pip/TCNQ system was determined by single crystal X-ray diffraction.

Charge transfer reactions of piperidine with p-chloranil (CHL) and 7,7′,8,8′-tetracyanoquinodimethane (TCNQ) in chloroform have been synthesized and characterized. The asymmetric unit of 7,7-dicyano-8,8-di-piperidinoquinodimethane adduct composed of two crystallographic independent [(pip)2TCNQ]2. The piperidine rings of each of the two independent molecules exhibits a chair conformation, while TCNQ fragment is nearly planer.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polyhedron - Volume 27, Issue 2, 6 February 2008, Pages 475–484
نویسندگان
, , ,