In this study, a
novel heterocyclic amide derivative,
N
-(3-cyanothiophen-2-yl)-2-(thiophen-2-yl)acetamide
(
I
), was obtained by reacting 2-aminothiophene-3-carbonitrile
with
activated 2-(thiophen-2-yl)acetic acid in a
N
-acylation
reaction and characterized by elemental analyses, FT-IR,
1
H and
13
C NMR spectroscopic studies, and single crystal
X-ray crystallography. The crystal packing of
I
is stabilized
by C–H···N and N–H···N
hydrogen bonds. In addition,
I
was investigated computationally
using the density functional theory (DFT) method with the B3LYP exchange
and correlation functions in conjunction with the 6311++G(d,p) basis
set in the gas phase. Fukui function (FF) analysis was also carried
out. Electrophilicity-based charge transfer (ECT) method and charge
transfer (Δ
N
) were computed to examine the
interactions between
I
and DNA bases (such as guanine,
thymine, adenine, and cytosine). The most important contributions
to the Hirshfeld surface are H···H (21%), C···H
(20%), S···H (19%), N···H (14%), and
O···H (12%). An ABTS antioxidant assay was used to
evaluate the in vitro antioxidant activity of
I
. The
compound exhibited moderate antioxidant activity. The antimicrobial
activity of the title molecule was investigated under aseptic conditions,
using the microdilution method, against Gram-positive and Gram-negative
bacterial strains, and it also demonstrated significant activity against
yeasts (
Candida glabrata
ATCC 90030,
Candida krusei
ATCC 34135). The findings revealed
that the molecule possesses significant antioxidant and antimicrobial
properties.