5422-70-8

Basic information

• Product Name: bromo-N,N,N-trimethylmethanaminium
• CAS NO: 5422-70-8
• Molecular Formula: Br*C₄H₁₁BrN
• Molecular Weight: 153.0403
• Mol File: 5422-70-8.mol
• Article Data: 9

Chemical Properties

• CAS DataBase Reference: bromo-N,N,N-trimethylmethanaminium(CAS DataBase Reference)
• NIST Chemistry Reference: bromo-N,N,N-trimethylmethanaminium(5422-70-8)
• EPA Substance Registry System: bromo-N,N,N-trimethylmethanaminium(5422-70-8)

Safety Data

• Hazardous Substances Data: 5422-70-8(Hazardous Substances Data)

Upstream product

• 64-17-5 ethanol 
• 75-50-3 trimethylamine 
• 74-95-3 1,1-dibromomethane 
• 121-44-8 triethylamine 

Downstream Products

• 50-00-0 formaldehyd 
• 64-20-0 tetramethylammonium bromide 
• 6912-12-5 dimethylamine hydrobromide 

Relevant articles and documents

Large Piezoelectric Effect in a Lead-Free Molecular Ferroelectric Thin Film

Piezoelectric materials have been widely used in various applications, such as high-voltage sources, actuators, sensors, motors, frequency standard, vibration reducer, and so on. In the past decades, lead zirconate titanate (PZT) binary ferroelectric ceramics have dominated the commercial piezoelectric market due to their excellent properties near the morphotropic phase boundary (MPB), although they contain more than 60% toxic lead element. Here, we report a lead-free and one-composition molecular ferroelectric trimethylbromomethylammonium tribromomanganese(II) (TMBM-MnBr3) with a large piezoelectric coefficient d33 of 112 pC/N along polar axis, comparable with those of typically one-composition piezoceramics such as BaTiO3 along polar axis [001] (～90 pC/N) and much greater than those of most known molecular ferroelectrics (almost below 40 pC/N). More significantly, the effective local piezoelectric coefficient of TMBM-MnBr3 films is comparable to that of its bulk crystals. In terms of ferroelectric performance, it is the low coercive voltages, combined with the multiaxial characteristic, that ensure the feasibility of piezo film applications. Based on these, along with the common superiorities of molecular ferroelectrics like light weight, flexibility, low acoustical impedance, easy and environmentally friendly processing, it will open a new avenue for the exploration of next-generation piezoelectric devices in industrial and medical applications.

Target Designing Phase Transition Materials through Halogen Substitution

Crystalline materials have received extensive attention due to their extraordinary physical and chemical properties. Among them, phase transition materials have attracted great attention in the fields of photovoltaic, switchable dielectric devices, and ferroelectric memories, etc. However, many of them suffer from low phase transition temperatures, which limits their practical application. In this work, we systematically designed crystalline materials, (TMXM)2PtCl6 (X=F, Cl, Br, I) through halogen substitution on the cations, aiming to improving phase transition temperature. The resulting phase transition of (TMXM)2PtCl6 (X=F, Cl, Br, I) get a significant enhancement, compared to the parent compound [(CH3)4N]2PtCl6 ((TM)2PtCl6). Such phase transition temperature enhancement can be attributed to the introduction of halogen atoms that increase the potential energy barrier of the cation rotation. In addition, (TMBM)2PtCl6 and (TMIM)2PtCl6 have a low symmetry and crystallize in the space group C2/c and P212121, respectively. This work highlights the halogen substitution in designing crystal materials with high phase transition temperature.

High-temperature sequential structural transitions with distinct switchable dielectric behaviors in two organic ionic plastic crystals: [C4H11NBr] [ClO4] and [C4H11NBr] [BF4]

Two new organic ionic plastic crystals (OIPCs), [TMBM] [ClO4] (1) and [TMBM] [BF4] (2) (TMBM = trimethylbromomethyl ammonium), were successfully synthesized. Systematic characterization via differential scanning calorimetry (DSC), va