Synthesis, growth, structural and optical properties of a novel organic third order nonlinear optical crystal: Piperazinediium trichloroacetate

Copper‐Based MOF Crystals for Low‐k Dielectric Applications

“…The low value of Urbach energy indicates that the structural defect in the grown crystal is minimum. [ 31 ]…”

Synthesis and crystal structure of a new polymorph of diisopropylammonium trichloroacetate, C8H16Cl3NO2

“…The comparison of the asymmetric unit of the title structure with the orthorhombic polymorph 1 shows that the content is doubled. Another obvious difference of the title structure compared to the orthorhombic polymorph 1 of dipH TCA [34] is that in the polymorph 1 one crystallographically independent TCA anion shows disorder of the CCl 3 group, whereas the other one appears ordered. The most interesting observation is, that the hydrogen bonded chains run both along the crystallographic a direction in the title structure which is in glaring contrast to polymorph 1 in which the chains run along two directions, which are perpendicular to each other.…”

“…This contribution forms part of our longstanding interest in hydrogen-bonded dipH halogenides and pseudo halogenide [19,22,24,26], dipH salts with oxygencontaining counter anions [5,17,29] and a limited number of dipH halogenidometallates [30,31]. Furthermore, hydrogenbonded trichloroacetate salts are also materials with interesting properties [32][33][34]. Many of the chain-type hydrogen bonded polymers like dipHI, dipHCl, dipHBr, dipH[HF 2 ] etc.…”