Tetramethylammonium hydroxide (TMAH or TMAOH) is a quaternary ammonium salt with molecular formula N(CH 3) 4 + OH −. It is commonly encountered in form of concentrated solutions in water or methanol .

1.甲酸、甲醛与氨水反应生成三甲胺甲酸盐：4HCOOH+3HCHO+NH3→N (CH3)3·HCOOH+3CO2↑+3H2O. 四甲基氯化铵是有机合成中 相转移催化剂，催化活性强于三苯基磷和三乙胺，室温下为白色结晶粉末，易挥发，有刺激性，易吸湿，易溶于甲醇，溶于水和热乙醇，不溶于乙醚和氯仿。 加热到230℃以上分解为三甲胺和氯甲烷。 半数致死量 （小鼠，腹腔）25mg/kg。 也用于液晶 环氧化合物 的合成，极谱和波普分析，电子工业等 [2]。 本品应密 …

四甲基氯化铵又名氯化四甲基铵。分子式 (ch3)4ncl。分子量 109.60，白色晶体，有挥发性。易潮解。相对密度1.169，熔点425℃。加热至230℃分解为三甲胺和氯甲烷。溶于水。用作极谱分析试剂。 mdl号 : mfcd00011628: 危险品标志 : t - 有毒物品 xn - 有害物品: 风险术语

Tetramethylammonium chloride is one of the simplest quaternary ammonium salts, with four methyl groups tetrahedrally attached to the central N. The chemical formula (CH 3) 4 N + Cl − is often abbreviated further as Me 4 N + Cl −. It is a hygroscopic colourless solid that is soluble in water and polar organic solvents.

2023年6月1日 · Tetramethylammonium ions N (CH 3) 4+ is used to substitute partly methylammonium in MAPbI 3 in order to develop structure stability and high efficiency perovskite solar cells.

2021年1月27日 · Given the strong ferroelectricity, good stability and high visible-light absorption, N (CH 3) 4 SnI 3 may be an ideal light-absorber semiconductor for high-efficiency solar cells because its...

2022年4月20日 · Based on above discussions, a new strategy is reported in this work to introduce the tetramethylammonium ion (N (CH3) 4+, TMA +) into the layered structure of vanadium oxides like NH4 V 4 O 10, aiming at trimming the structural NH 4+ in ammonium metavanadate and seeking for replacing NH4+ with TMA + to further stabilize the structure and improve...

A new perovskite-like compound [N (CH3)4] [Cd (N3)3] is reported here, which undergoes a series of reversible phase transitions including an above-room-temperature ferroelastic phase transition. An order–disorder mechanism is found in these structural transitions owing to the sway of the rod-like N3− bridges as.

1996年1月19日 · Manganese (II) nitrate and tetramethylammonium azide react to give the title compound in which the azido groups function as end-to-end bridging lig-ands in all spatial directions, and whose structure can be described as corresponding to a distorted perovskite (section of the structure shown on the right).

2023年6月26日 · 四甲基氯化铵是一种常用的季铵盐化合物，它的化学式是(n(ch3)4)cl，也被简称为tmah。 这种化合物在许多领域中发挥着重要的作用。 本文将从不同的角度介绍四甲基氯化铵，以展示它的多样性和广泛应用。