摘要:

AbstractMulticomponent oxide glasses can be produced not only by melting methods but also by hydrolysis and condensation of alkoxide complexes with several metals. This requires temperatures only up to the transformation range of the glass in question, usually 500–600 °C. The process does not pass through the molten phase. It is possible to obtain glasses or polycrystalline substances, depending on the composition. The method is particularly suitable for the production of thin, transparent multicomponent oxide layers of almost any composition on substrates. Some of these layers provide protection against climatic attack or against oxidati

ISSN:0570-0833    

DOI:10.1002/anie.197103631

出版商:Hüthig&Wepf Verlag    

年代:1971

数据来源: WILEY

摘要:

AbstractThe abuse of nutmeg for narcotic purposes has led to renewed chemical and pharmacological interest in this drug. Several allylbenzene derivatives whose biological transformation products have structures resembling mescaline and amphetamine have been identified as psychotropic constituents. It is suggested that the intensity of the hallucinogenic action of these compounds is due to the possibility of simulation of LSD‐like structural element

ISSN:0570-0833    

DOI:10.1002/anie.197103701

出版商:Hüthig&Wepf Verlag    

年代:1971

数据来源: WILEY

摘要:

AbstractThe highly reactive compound bis(trimethylsilyl)diimine (BSD), which was first prepared by oxidation of lithium tris(trimethylsilyl)hydrazide, is light blue, sensitive to thermolysis and hydrolysis, and ignites spontaneously in air. On the basis of electron transfer, acid‐base, or free‐radical reactions, it acts in particular as a (preparatively useful) redox system and as an agent for the introduction of azo groups. Redox reactions lead by oxidation or reduction of the other reactant through two oxidation stages to hydrazine derivatives or molecular nitrogen, and in the case of electrochemical reduction, to BSD radical‐anions. Azo‐group transfers, on the other hand, yield new inorganic azo compounds with no change in the oxidation state of the diimin

ISSN:0570-0833    

DOI:10.1002/anie.197103741

出版商:Hüthig&Wepf Verlag    

年代:1971

数据来源: WILEY

摘要:

AbstractMembranes are essential components of living cells. They act as barriers and pumps, as enzyme supports, and also as a means of protection. Their chemical makeup from proteins, lipids, carbohydrates, ribonucleic acids, and water is well known, but there is as yet no generally accepted model for their structure. It is also by no means certain that all membranes have the same structural plan.

ISSN:0570-0833    

DOI:10.1002/anie.197103881

出版商:Hüthig&Wepf Verlag    

年代:1971

数据来源: WILEY

ISSN:0570-0833    

DOI:10.1002/anie.197103961

出版商:Hüthig&Wepf Verlag    

年代:1971

数据来源: WILEY

ISSN:0570-0833    

DOI:10.1002/anie.197103971

出版商:Hüthig&Wepf Verlag    

年代:1971

数据来源: WILEY

ISSN:0570-0833    

DOI:10.1002/anie.197103981

出版商:Hüthig&Wepf Verlag    

年代:1971

数据来源: WILEY

ISSN:0570-0833    

DOI:10.1002/anie.197103991

出版商:Hüthig&Wepf Verlag    

年代:1971

数据来源: WILEY

ISSN:0570-0833    

DOI:10.1002/anie.197104011

出版商:Hüthig&Wepf Verlag    

年代:1971

数据来源: WILEY

ISSN:0570-0833    

DOI:10.1002/anie.197104021

出版商:Hüthig&Wepf Verlag    

年代:1971

数据来源: WILEY