01512nas a2200193   4500008004100000022001400041245011100055210007100166260008700237300001400324490000700338520075300345653001601098653001401114653002501128653002401153100002701177856011401204       2006                        eng d  a0011-389100aMolecular tensegrity: predicting 1,3-X–-X distance in gas-phase MXn (n <= 4) compounds from atomic sizes0 aMolecular tensegrity predicting 13X–X distance in gasphase MXn n  aC V RAMAN AVENUE, PO BOX 8005, BANGALORE 560 080, INDIAbCURRENT SCIENCE ASSNcDEC  a1505-15080 v913 a<p>This article extends an earlier definition(1) and use of molecular tensegrity for obtaining quantitatively the 1,3-non-bonded distances in gas-phase MX2 compounds to nearly 160 gas-phase MXn (n &lt;= 4) inorganic compounds (including those of transition metal elements), once a transferable `core' atomic size is specified. The simple principles behind this methodology (involving only linear equations), its quantitative character, its transparency, its portability and its generality account very simply for molecular geometry in such compounds without requiring earlier theoretical methodologies. We also establish clear distinction in the prescription for obtaining the 1,3-distance when M is an atom of a metallic or insulating element.</p>10aAtomic size10agas phase10amolecular tensegrity10anon-bonded distance1 aGanguly, Parthasarathy  uhttps://library.ncl.res.in/content/molecular-tensegrity-predicting-13-x%E2%80%93-x-distance-gas-phase-mxn-n-001531nas a2200181   4500008004100000022001400041245004200055210004200097260007300139300001200212490000800224520096000232653001601192653001601208653002401224100002701248856007401275       2009                        eng d  a0022-286000aAtomic sizes from atomic interactions0 aAtomic sizes from atomic interactions  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUL  a162-1660 v9303 a<p>We obtain an atomic size, r(nZ)(c), in the presence of an interaction (represented by an electron-hole pair, e(-)h(+) as in vacuum polarization techniques) as a sum of contribution, r(nv), from the interaction of n(val) valence sand p-electrons and a contribution r(RG) from inner filled shell electrons with rare-gas configuration. The method is applicable to all elements for a given electron configuration that is usually available simply from the position of the elements in the periodic table. The sizes thus obtained are close to other ``core sizes'' obtained in the literature. The transition metal elements are treated as group II elements. This method gives sizes for the actinide and trans-actinide elements without requiring relativistic corrections. The importance of these sizes in interpreting interatomic distances in terms of electronic configuration is illustrated for actinide elements. (C) 2009 Elsevier B.V. All rights reserved.</p>10aAtomic size10aIonic radii10aVacuum polarization1 aGanguly, Parthasarathy  uhttps://library.ncl.res.in/content/atomic-sizes-atomic-interactions-0