A new monoclinic polymorph of methyl p-aminobenzoate

Antonio C Doriguetto; Carlos H T de Paula Silva; Daniela G Rando; Elizabeth I Ferreira; Javier Ellena

doi:10.1107/s0108270103027422

A new monoclinic polymorph of methyl p-aminobenzoate

Acta Crystallogr C. 2004 Jan;60(Pt 1):o69-71. doi: 10.1107/s0108270103027422. Epub 2003 Dec 13.

Authors

Antonio C Doriguetto¹, Carlos H T de Paula Silva, Daniela G Rando, Elizabeth I Ferreira, Javier Ellena

Affiliation

¹ Instituto de Física de São Carlos, Universidade de São Paulo, Caixa Postal 369, CEP 13560-970, São Carlos, SP, Brazil. dorigue@if.sc.usp.br

PMID: 14712051
DOI: 10.1107/s0108270103027422

Abstract

Single crystals of methyl-p-aminobenzoate (MAB), C(8)H(9)NO(2), were obtained during the synthesis of 4-amino-N'-(5-nitro-2-thienylmethylene)benzohydrazide. A P2(1)/c polymorph [a = 8.5969 (4) A, b = 5.6053 (2) A, c = 15.5397 (7) A and beta = 96.172 (2) degrees ] of MAB was found and the intra- and intermolecular geometries were compared with those of the previously known C2/c structure [a = 16.242 (2) A, b = 8.113 (2) A, c = 12.724 (2) A and beta = 69.17 (1) degrees; Xianti (1983). Jiegou Huaxue, 2, 219-221].