Periodic Nodal Surfaces: Their Generation, Analysis, and Application in Structural Chemistry

Periodic Nodal Surfaces Their Generation Analysis and Application in Structural Chemistry Periodic what This thesis has many illustrations of three dimensional space dividers of a wide range of symmetries some simple some complex but many of them simply gorgeous to look at And that is a

Title: Periodic Nodal Surfaces: Their Generation, Analysis, and Application in Structural Chemistry

Author: Germar Rudolf

ISBN: 9781591481140

Page: 410

Format: Paperback

Periodic what This thesis has many illustrations of three dimensional space dividers of a wide range of symmetries, some simple, some complex, but many of them simply gorgeous to look at And that is all most people can appreciate about this thesis The rest is for a handful of experts, also called crystallography nerds, who look at life from their ivory tower perspectivePeriodic what This thesis has many illustrations of three dimensional space dividers of a wide range of symmetries, some simple, some complex, but many of them simply gorgeous to look at And that is all most people can appreciate about this thesis The rest is for a handful of experts, also called crystallography nerds, who look at life from their ivory tower perspective They might understand what follows The rest of humanity I ask to please pardon my ranting Since the early 1970s relationships between the properties of periodic minimal surfaces PMS and a variety of phenomena from different disciplines of the natural sciences have been investigated In the mid 1980s these investigations were expanded to encompass periodic potential surfaces P0PS and since the late 1980s also nodal surfaces PNS The concept of periodic nodal surfaces is, quite in contrast to both other methods, free of any physical implications and offers a broad variability while constraint by strict symmetry laws.One main focus of this thesis is the complete analysis of characteristic structure factors S hkl for the systematic generation of periodic nodal surfaces This analysis departs from the implicitly known, yet never comprehensively summarized symmetry selection laws of the reciprocal lattice vectors including their phase permutations In analogy to the characteristic point configurations in real space, the characteristic structure factors S hkl of a certain symmetry are deducted for the reciprocal space Tables are produced for the cubic, hexagonal, and trigonal crystal systems, which list the correlation between symmetry and structure factor type Also considered are phase shifts caused by shifted origins.Based on these results, numerous periodic nodal surfaces are introduced and analyzed, which have been calculated rather easily with Fourier sums The analysis of mathematical properties regarding topology and symmetry yields a series of results which have been known from the other methods Decisive new insights are gained, however, while analyzing the distribution of extrema of the generating Fourier series They frequently exhibit constant or only slightly varying values along certain lines Hence, besides the nodes it is particularly these line and line segment graphs which permit a characterization of PNS Further the surface areas and volumes of partial spaces separated by the surfaces can be determined easily, which is important for special questions of structural chemistry.The exploration of hyperbolic, graphite like networks reveals topological and symmetrical patterns regarding the existence and variability of hypothetical new graphite modifications This topological excursion into non Euclidean geometry leads to generally valid relationships between frameworks of chemical compounds and mostly hyperbolic periodic nodal surfaces PNS.The organization of chemical structures by periodic nodal surfaces is investigated, with many examples It is demonstrated that already a relatively small amount of surface types permits the analysis and sometimes very detailed characterization of a broad range of different compounds In some cases the concept of non Euclidean layer structures leads to an improved understanding of complicated structures and to the discovery of overlooked details, for instance the layered organization of labyrinth water in faujasite.Several topics are finally listed as suggestions for further research, where the concept of periodic nodal surfaces PNS could be applied just as successfully.

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Best Read [Germar Rudolf] ↠ Periodic Nodal Surfaces: Their Generation, Analysis, and Application in Structural Chemistry || [Suspense Book] PDF ↠

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Title: Best Read [Germar Rudolf] ↠ Periodic Nodal Surfaces: Their Generation, Analysis, and Application in Structural Chemistry || [Suspense Book] PDF ↠
Posted by:Germar Rudolf
Published :2018-07-16T14:31:23+00:00

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