Topic
Valency
About: Valency is a research topic. Over the lifetime, 1632 publications have been published within this topic receiving 26141 citations.
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TL;DR: Estimation of the total uncertainties of the experimentally identified Mn valence-sensitive ELNES quantities indicates that at low signal-to-noise ratio both energy separations allow to resolve the smallest valency changes.
36 citations
TL;DR: The europium valency in hexagonal EuPtP, as examined by LIII-x-ray absorption and Moessbauer experiments, is a function of temperature and changes from 2.16 at 295 K to 2.40 at 4 K as mentioned in this paper.
Abstract: The europium valency in hexagonal EuPtP, as examined byLIII-x-ray absorption and Moessbauer experiments, is a function of temperature and changes from 2.16 at 295 K to 2.40 at 4 K. In the region of the strongest temperature dependence of the valency, the compound undergoes two first order phase transitions atT1=235 K andT2=190 K, characterized by discontinuities in the lattice constants and in the magnetic susceptibility. In the europium Moessbauer spectra, several temperature dependent absorption lines were found, indicating a complex europium valency behaviour. Furthermore, we observe antiferromagnetic order at 8.6 K.
36 citations
23 Jan 2007
TL;DR: "Valency - Theoretical, Descriptive and Cognitive Issues" represents a collection of articles which focus on the issue of complementation within different theoretical frameworks.
Abstract: In recent years, research on valency has led to important insights into the nature of language. Some of these findings are published in this volume for the first time with up-to-date accounts of language description and new reflections on language, above all for English and German. The volume also presents examples of contrastive analysis, which are of use for all those who deal professionally with these two languages. Furthermore, the articles in the psycholinguistic and computational linguistics section demonstrate the applicability and value of valency theory for these approaches and shed light on a fruitful cooperation between theoretical and descriptive linguistics and applied disciplines. The papers cover the following aspects of valency analysis: (i) theoretical aspects of the valency approach in relation to related theories of complementation (dependency syntax, FrameNet, case roles), (ii) descriptive aspects of valency and complementation, (iii) valency as a concept for the description of cognitive processes in syntactic processing, (iv) contrastive aspects of valency, above all for English and German, and (v) possible computational applications of the valency concept in fields such as automatic syntactic recognition or language processing. The volume combines papers of representatives from different linguistic schools on the topic of complementation. One of the aims is to show how concepts developed for the analysis of one language, in the case of valency often German, can be applied to other languages such as English.
36 citations
TL;DR: (C5Me5)2Yb x OEt2 reacts with terpyridine and tetrapyridinylpyrazine to afford new mixed-valent systems.
35 citations
Patent•
05 Sep 2006
TL;DR: In this article, a compound represented by the following Formula (1) is useful as an electron transport material of an organic EL device, and a compound comprising the compound in the electron transport layer is long in life, and low in drive voltage: wherein G is an n-valent link, n is an integer of 2 to 4; R1 to R4 are each independently hydrogen, a monovalent group, or a free valency bonded with G, and R5 to R8 are each hydrogen or a mono-ovalent groups.
Abstract: A compound represented by the following Formula (1) is useful as an electron transport material of an organic EL device, and an organic EL device comprising the compound in the electron transport layer is long in life, and low in drive voltage: wherein G is an n-valent link, n is an integer of 2 to 4; R1 to R4 are each independently hydrogen, a monovalent group, or a free valency bonded with G, and R5 to R8 are each independently hydrogen or a monovalent group, and one of R1 to R4 is a free valency bonded with G; and n groups of 2,3′-bipyridyl may be the same or different with each other
35 citations