A new monoclinic polymorph of methyl p-aminobenzoate.
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].
Doriguetto
Antonio C
AC
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
de Paula Silva
Carlos H T
CH
Rando
Daniela G
DG
Ferreira
Elizabeth I
EI
Ellena
Javier
J