Abstract: To provide a new silicon-containing polymer making it possible to form a cured film has features that its residual stress is small and crack resistance is high. A polycarbosilazane having particular cyclic structures.

Abstract: A polysilazane having a ratio of the amount of SiH3 exceeding 0.050 and a ratio of the amount of NH of less than 0.045, based on the amount of aromatic ring hydrogen of xylene when 1H-NMR of a 17% by mass solution of polysilazane dissolved in xylene is measured. A siliceous film-forming composition comprising the polysilazane. A method for producing a siliceous film comprising applying the polysilazane composition above a substrate.

Abstract: To provide a new silicon-containing polymer making it possible to form a cured film has features that its residual stress is small and crack resistance is high. A polycarbosilazane having particular cyclic structures.

Abstract: [Problem] To provide a polycarbosilazane making it possible to form a silicon-containing film which is bearable to acid etching, and a composition comprising the polycarbosilazane. [Means for Solution] The present invention provides a polycarbosilazane comprising a repeating unit of —[R1R2Si—(CH2)n]— and —(R3R4Si—NR5)—, wherein R1, R2, R3 and R4 are each independently a single bond, hydrogen or C1-4 alkyl; R5 is independently a single bond or hydrogen; and n is 1-2, and a composition comprising the polycarbosilazane. The present invention also provides a method for forming a silicon-containing film, comprising coating the composition above a substrate and heating.

Abstract: The invention relates to a process for producing compounds containing at least one arylamino group by means of a palladium-catalysed coupling reaction of an arylamino compound with an aryl compound, using LiOtBu as a base.

Abstract: The present invention relates to 2,3-dihydrobenzothiophene derivatives of the general formula I In which the occurring groups and parameters have the meanings indicated in claim 1, to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising these derivatives, and to electro-optical display elements containing these liquid-crystalline or mesogenic media.

Abstract: The present invention relates to 2,3-dihydrobenzothiophene derivatives of the general formula I In which the occurring groups and parameters have the meanings indicated in claim 1, to the use thereof in liquid-crystalline or mesogenic media, to liquid-crystalline or mesogenic media comprising these derivatives, and to electro-optical display elements containing these liquid-crystalline or mesogenic media.

Abstract: A method for the methylation of amines, amides and imines comprises the step of reacting these compounds with CO2 and H2 in the presence of a Ruthenium-phosphine complex.

Abstract: A method for the methylation of amines, amides and imines comprises the step of reacting these compounds with CO2 and H2 in the presence of a Ruthenium-phosphine complex.

Abstract: A method for the reduction of carbon dioxide and/or carbon dioxide derivatives to methanol comprises the step of hydrogenation carbon dioxide and/or carbon dioxide derivatives in the presence of a Ruthenium-phosphine complex.

Abstract: A method for the reduction of carbon dioxide and/or carbon dioxide derivatives to methanol comprises the step of hydrogenation carbon dioxide and/or carbon dioxide derivatives in the presence of a Ruthenium-phosphine complex.