Syntheses and X-ray Structure of N-(Benzothiazol-2-yl)-3-chlorobenzamide
Salif Sow
Department of Chemistry, University Cheikh Anta Diop Dakar 10700, Sénégal.
Felix Odame
Department of Basic Sciences, University of Health and Allied Sciences, PMB 31, Ho, Ghana and Department of Chemistry, Nelson Mandela University, P.O. Box 77000, Port Elizabeth, 6031, South Africa.
Ngoné Diouf
Department of Chemistry, University Cheikh Anta Diop Dakar 10700, Sénégal.
Ibrahima Elhadj Thiam *
Department of Chemistry, University Cheikh Anta Diop Dakar 10700, Sénégal.
Ousmane Diouf
Department of Chemistry, University Cheikh Anta Diop Dakar 10700, Sénégal.
Javier Ellena
Departamento de Química - Facultad de Ciencias Naturales y Exactas Universidad del Valle Apartado 25360 Santiago de Cali Colombia and bInstituto de Física de São Carlos IFSC Universidade de São Paulo USP São Carlos SP, Brazil.
Zenixole R. Tshentu
Department of Chemistry, Nelson Mandela University, P.O. Box 77000, Port Elizabeth, 6031, South Africa.
Mohamed Gaye
Department of Chemistry, University Cheikh Anta Diop Dakar 10700, Sénégal.
*Author to whom correspondence should be addressed.
Abstract
The reaction of 3-chloro-benzoyl chloride and 2-aminobenzothiazole in the presence of potassium thiocyanate yielded a yellowish solid C15H10ClN3OS2 (1). Reaction of 1 with cobalt chloride yield a yellowish solid C14H11ClN2O2S (2) which gives crystal suitable for X-ray analyses. The compounds were characterized by elemental analyses FTIR spectroscopy and melting point measurement. Compound 2 crystallizes in the triclinic space group Pī with the following parameters: a = 7.0299(2) Å b = 7.0466(2) Å c = 14.5490(2) Å a = 103.844(3)° β = 92.929(2)° g = 107.291(3) V = 662.33(4) Å3 Z= 2 R1 = 0.030 wR2 = 0.034. The asymmetric unit of (2) consists of one molecule in which the 3-chloro phenyl moiety and the benzothiazole-2-yl moiety form a dihedral angle of 6.417(4)°. An intramolecular O—H···O hydrogen bond occurs. In the crystal O—H···N and N—H···O hydrogen bonds link the molecules forming layers parallel to the ac plane.
Keywords: Cobalt (II) 3-chloro-benzoyl chloride 2-aminobenzothiazole dethiocyanation FTIR, X-ray diffraction