Metal complexes of b-diketone derivatives have played an
important role in coordination chemistry [1–3] and have been
widely used in various aspects of industries, such as organic electroluminescent
technology, luminescent materials and sensors
for bioinorganic applications [4–6]. With an aim to develop novel
optical materials, the NLO (nonlinear optical) response of b-diketone,
different aromatic aldehydes are introduced in active methylene
group by Knoevenagel condensation.