Synthesis, crystal structures, high-temperatures phase transition, optic and electric properties of hybrid halogenometallates: [(CH3)3N(CH2)2Br]2[MIIBr4] (M = Cu, Zn)

Abstract

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Multifunctional High-Temperature Phase-Transition Energy Storage Material with Coexistence of Electrical–Thermal Double Switches:[(C6H15BrNO)2MBr4] (M = Cd and Zn)

“…Therefore, the band gaps of compounds 1 and 2 are mainly controlled by inorganic anions [CdBr 4 ] 2– and [ZnBr 4 ] 2– . This result is consistent with the reported Cd-based and Zn-based hybrid perovskites. ,,− …”

A new supramolecular semiconductor palladium(ii) complex [(CH3)3N(CH2)3Br]2Pd2Cl6: structural study, optical and electrical properties

“…3b) indicates that the E g value obtained by a linear fit is equal to 2.2 eV. 41,42 This value shows the semiconductor character of the [(CH 3 ) 3 N(CH 2 ) 3 Br] 2 [Pd 2 Cl 6 ] compound and shows a smaller gap energy than other similar compounds such as [N(CH 3 ) 2 H 2 ] 2 [CoCl 4 ], 43 [(CH 3 ) 3 N(CH 2 ) 2 Br] 2 [ZnCl 4 ], 44 and [N(C 2 H 5 ) 2 ] 2 [Pd 2 Cl 6 ], 28 which are equal to 4.29 eV, 4.87 eV and 4.34 eV, respectively.…”

Bromination of organic spacer impacts on the structural arrangement, phase transitions, and optical and electrical properties of a hybrid halide compound:[(CH3)3N(CH2)3Br]2PdBr4

“…Meanwhile, in our previous work, we have discovered that the transition metal halide anions affiliated with organo-halogen cations affect the crystal symmetry and contribute to the design of new hybrid compounds like [Br(CH 2 ) 2 N(CH 3 ) 3 ] 2 M II Br 4 (M II = Co 2+ , Cu 2+ , Zn 2+ ). 36,37 These materials crystallize in the monoclinic system with a P 2 1 / c space group and show some similarity of the structure. With replacement of (2-bromoethyl)trimethylammonium by (3-bromopropyl)trimethylammonium in such a system, the new compound [Br(CH 2 ) 3 N(CH 3 ) 3 ] 2 PdBr 4 possesses high symmetry.…”

“…Brown prism crystals of [Br(CH 2 ) 3 N(CH 3 ) 3 ] 2 PdBr 4 were synthesized in high yields (87.5%) through a slow evaporation ). 36,37 These materials crystallize in the monoclinic system with a P2 S1, ESI †). These values are consistent with those observed in related Pd(II) complexes.…”

“…More recently, the bromination strategy has been effectively applied to synthesize new hybrid halide semiconductors, including compounds such as [Br(CH 2 ) 2 N(CH 3 ) 3 ] 2 CoBr 4 36 and [Br(CH 2 ) 2 N(CH 3 ) 3 ] 2 M II Br 4 (M II = Cu 2+ , Zn 2+ ). 37 It is noteworthy that the brominated [Br(CH 2 ) 3 N(CH 3 ) 3 ] 2 Pd 2 Cl 6 has excellent thermal stability, a high T c phase transition up to 428 K and a narrow optical band gap of approximately 2.2 eV. 38 In the present manuscript, we present and investigate another new hybrid metal halide compound [Br(CH 2 ) 3 N(CH 3 ) 3 ] 2 PdBr 4 characterized by a remarkable reversible phase transition temperature of 363 K. Herein, we detail the crystal structure, phase transition behavior, Raman spectroscopy results, electric performance and optical properties of this compound.…”