CEQUINOR   05415
CENTRO DE QUIMICA INORGANICA "DR. PEDRO J. AYMONINO"
Unidad Ejecutora - UE
artículos
Título:
Synthesis and Characterization of the First Phosphonic Diamide Containing Thiazolyl Groups: Structural Properties and Tautomeric Equilibrium
Autor/es:
GHOLIVAND, KHODAYAR; FARSHADIAN, S.; ERBEN, MAURICIO FEDERICO; DELLA VÉDOVA, CARLOS OMAR
Revista:
JOURNAL OF MOLECULAR STRUCTURE
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2010 vol. 978 p. 67 - 67
ISSN:
0022-2860
Resumen:
<!-- /* Font Definitions */ @font-face {font-family:Calibri; mso-font-alt:"Century Gothic"; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-fareast-font-family:Calibri; mso-bidi-font-family:Arial; mso-ansi-language:EN-US; mso-fareast-language:EN-US;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> <!-- /* Font Definitions */ @font-face {font-family:Calibri; mso-font-alt:"Century Gothic"; mso-font-charset:0; mso-generic-font-family:swiss; mso-font-pitch:variable; mso-font-signature:-1610611985 1073750139 0 0 159 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin-top:0cm; margin-right:0cm; margin-bottom:10.0pt; margin-left:0cm; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibri; mso-fareast-font-family:Calibri; mso-bidi-font-family:Arial; mso-ansi-language:EN-US; mso-fareast-language:EN-US;} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 3.0cm 70.85pt 3.0cm; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> A new phosphonic diamide containing thiazolyl rings, N,N´ bis(2-thiazolyl) phenylphosphonic diamide, with general formula H5C6P(O)[NHCN(CH)2S]2 (1), was synthesized and  characterized by NMR, IR, UV, EI mass-spectrometry and elemental analysis. The X-ray diffraction structure obtained for 1 shows that the crystalline compound exists in the imine form, forming centro-symmetric dimers which are produced by intermolecular cooperative hydrogen bonds leading to a two dimensional polymeric chain. The preferred tautomeric and conformational equilibria have also been identified in solution. Thus, a tautomeric equilibrium of 97:3 % between the amine:imine form is observed in DMSO-d6. Structural and conformational properties are analyzed using a combined approach involving crystallographic data, vibrational spectra and theoretical calculations at the B3LYP and MP2 (with 6-311++G** and CBSB7 basis sets) level of approximations.