The first polyanion-substitution-driven centrosymmetric-to-noncentrosymmetric structural transformation realizing an excellent nonlinear optical supramolecule [Cd₄P₂][CdBr₄].

ABSTRACT: Crystallographically, noncentrosymmetricity (NCS) is an essential precondition and foundation of achieving nonlinear optical (NLO), pyroelectric, ferroelectric, and piezoelectric materials. Herein, structurally, octahedral [SmCl₆]^3- is substituted by the acentric tetrahedral polyanion [CdBr₄]^2-, which is employed as a templating agent to induce centrosymmetric (CS)-to-NCS transformation based on the new CS supramolecule [Cd₅P₂][SmCl₆]Cl (1), thereby providing the NCS supramolecule [Cd₄P₂][CdBr₄] (2). Meanwhile, this replacement further results in the host 2D _∞²[Cd₅P₂]⁴⁺ layers converting to yield the twisted 3D _∞

SUBMITTER: Qiu ZX 

PROVIDER: S-EPMC10685307 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature