Journal•ISSN: 0026-9247
Monatshefte Fur Chemie
Springer Science+Business Media
About: Monatshefte Fur Chemie is an academic journal published by Springer Science+Business Media. The journal publishes majorly in the area(s): Catalysis & Chemistry. It has an ISSN identifier of 0026-9247. Over the lifetime, 14971 publications have been published receiving 132594 citations. The journal is also known as: Chemical monthly (Internet) & Monatshefte für Chemie (Print).
Topics: Catalysis, Chemistry, Crystal structure, Aryl, Cyclic voltammetry
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TL;DR: The Vienna RNA package as mentioned in this paper is based on dynamic programming algorithms and aims at predictions of structures with minimum free energies as well as at computations of the equilibrium partition functions and base pairing probabilities.
Abstract: Computer codes for computation and comparison of RNA secondary structures, the Vienna RNA package, are presented, that are based on dynamic programming algorithms and aim at predictions of structures with minimum free energies as well as at computations of the equilibrium partition functions and base pairing probabilities. An efficient heuristic for the inverse folding problem of RNA is introduced. In addition we present compact and efficient programs for the comparison of RNA secondary structures based on tree editing and alignment. All computer codes are written in ANSI C. They include implementations of modified algorithms on parallel computers with distributed memory. Performance analysis carried out on an Intel Hypercube shows that parallel computing becomes gradually more and more efficient the longer the sequences are.
2,136 citations
TL;DR: In this article, a correlation of O-H stretching frequencies (from infrared spectroscopy) with O…O and H…O bond lengths (from structural data) of minerals was established.
Abstract: A correlation of O-H stretching frequencies (from infrared spectroscopy) with O…O and H…O bond lengths (from structural data) of minerals was established. References on 65 minerals yielded 125 data pairs for the d(O…O)-v correlation; due to rare or inaccurate data on proton positions, only 47 data pairs were used for the d(H… O)-v correlation. The data cover a wide range of wavenumbers from 1000 to 3738 cm−1 and O…O distances from 2.44 to 3.5 A. They originate from silicates, (oxy)hydroxides, carbonates, sulfates, phosphates, and arsenates with OH−, H2O, or even H3O 2 − units forming very strong to very weak H bonds. The correlation function was established in the form v(cm−1) = 3592−304 · 109·exp(-d(O…O)/0.1321), R 2 = 0.96. Because of deviations from ideal straight H bonds, i.e. bent or bifurcated geometry, dynamic proton behavior, but also due to factor group splitting and cationic effects, data scatter considerably around the regression line. The trends of previous correlation curves and of theoretical considerations were confirmed.
833 citations
829 citations
TL;DR: In this article, the acceptor number of 34 solvents has been derived from 31P-n.m.r. measurements of triethylphosphine oxide dissolved in the respective solvent.
Abstract: The electrophilic properties of 34 solvents have been characterized by the Acceptor Number (AN) which has been derived from31P-n.m.r. measurements of triethylphosphine oxide dissolved in the respective solvents. Relationships are found between the acceptor numbers and theZ-values,E
T-values andY-values, as well as the free energies of solvation of anions and the redox potentials of the hexacyanoferrate(III)—hexacyanoferrrate(II) system in different solvents. The new parameter provides—together with the donor number—a useful guide in choosing the most appropriate solvent for a given reaction.
794 citations
TL;DR: In this article, the fundamental theories on the wettability of a hydrophobic rough solid surface, together with recent works on the processing and properties of super-hydrophobic films are reviewed.
Abstract: Films whose water contact angle is higher than 150° have been the subject of great interest and enthusiastic study in recent years. These films, which are called super-hydrophobic, are fabricated by combining appropriate surface roughness with surfaces of low surface energy. Here we briefly review the fundamental theories on the wettability of a hydrophobic rough solid surface, together with recent works on the processing and properties of super-hydrophobic films. Though the practical application of these films is still limited, the obstacles to application are gradually being surmounted, providing a great opportunity for the development of various industrial products.
717 citations