Crystal structure and semiconductor properties of copper(II) complex incorporating chiral (R)-(+)-α-Ethylbenzylammonium cations:[(R)-C9H14N]3[CuBr4].Br.

Chiral zero-dimensional hybrid organic–inorganic metal halides based on nipecotic acid and tetrabromocuprate

“…Firstly, in terms of the bond lengths (Tables S2 and S3, ESI†), for the [CuBr 4 ] 2− tetrahedral-like structure, the average Cu–Br bond length is 2.37 Å (2.2984 (11) Å–2.538 (5) Å) for [ R -NA] 2 [CuBr 4 ] and 2.19 Å (2.2902 (7) Å–2.491 (6) Å) for [ S -NA] 2 [CuBr 4 ], and these bond distances fall within the range of previously reported hybrid organic–inorganic metal halides. 10,43,44 There is a gap between the bond lengths, which indicates that the Cu 2+ is not located in the orthocenter and the compound has a significant tilt asymmetry. Secondly, in terms of the bond angles (Tables S4 and S5, ESI†), there are multiple different groups of Br–Cu–Br bond angles originating from the inhomogeneous distribution of the electrons in the condensed orbitals within the central Cu 2+ .…”

“…Through the study of structure and properties, the application scope was expanded and many chiral hybrid metal halides were synthesized. 1,[9][10][11][12] Chirality, as a spatial symmetry feature, can make objects exist in two nonsuperimposed mirror forms. Chiral isomers are widely found in pharmaceuticals, pesticides, food additives, and the environment.…”

“…Reducing the conformational dimension of hybrid organic-inorganic metal halides 1,7,[9][10][11]18,31 can greatly improve the structural properties, thermal stability, and photophysical properties of hybrid organic-inorganic metal halides. They are a class of semiconducting materials that have attracted considerable attention.…”

A Nickel-Based Semiconductor Hybrid Material with Significant Dielectric Constant for Electronic Capacitors

“…This phenomenon is commonly observed in organic− inorganic-halide-based materials. 58 At higher temperatures (above 413 K), the Nyquist diagrams displayed a decrease in the radius of the semicircle with an increase in temperature. This trend provides clear evidence of an activated conduction process in the material, indicating enhanced conductivity as the temperature increases.…”

Halogen bond and polymorphism in trans-bis(2-iodo-5-halopyridine)dihalocopper(ii) complexes: crystallographic, theoretical and magnetic studies

“…[48][49][50][51][52][53][54][55][56][57][58] The geometry around Cu(II) ion in copper(II) halide complexes is also flexible; it varies between tetrahedral, distorted tetrahedral with D2/d geometry, square planar, octahedral with Jahn-Teller effect, square pyramidal and trigonal bipyramidal, which enhances the possibility of formation of different conformational polymorphs in copper(II) complexes. 37,38,40,[59][60][61][62][63] Complexes of the general formula Cu(2ZP) 2 X 2 where 2ZP = 2-halopyridine and X = Cl or Br are flexible due to rotation around the N-Cu bond of the C2-N-Cu-N torsion angle (Scheme 1), two local energy minima are identified in these molecules, [64][65][66] hence they may crystallize as two different conformational polymorphic phases. The first conformer arises when the halogen atoms on position 2 of the pyridine ring are located on the same side of the coordination sphere (henceforth; syn-conformer) and when the substituents are located on opposite sides of the coordination sphere (henceforth anti-conformer) (Scheme 2).…”