/T1_8 182 0 R >> A pair of electrons in the bonding combination pulls all three atoms together. NOMENCLATURE OF INORGANIC BORON COMPOUNDS 2.3 Index to rules Rule No. /GS0 61 0 R /Type /Page /CropBox [0.0 0.0 595.276 793.701] /Parent 9 0 R /T1_8 87 0 R /T1_4 148 0 R Substituted boron-hydride cages are named here by a nomenclature that encompasses features borrowed from both ‘substitutive’ and ‘additive’ IUPAC nomenclature systems. /MC0 235 0 R /Fm0 88 0 R /XObject << /T1_1 64 0 R 16 0 obj /Contents [254 0 R 255 0 R 256 0 R] /Xi6 66 0 R >> /GS0 61 0 R /TrimBox [0.0 0.0 595.276 793.701] /MC0 150 0 R 15 0 obj /Fm0 82 0 R /Contents [178 0 R 179 0 R 180 0 R] /XObject << 37 0 obj A description of the bonding in the larger boranes was formulated by William Lipscomb. /CS0 [/Separation /Black /DeviceCMYK 59 0 R] /T1_10 239 0 R >> They are named by citing the number of boron atoms in the molecule as a numerical prefix to the term borane (except for the prefix mono- which is omitted, BH3 being named borane). >> /T1_0 64 0 R New developments in the field have been investigated and existing nomenclature systems have been adapted to accommodate these new developments. /Parent 7 0 R /CS0 [/Separation /Black /DeviceCMYK 59 0 R] /Type /Pages /CropBox [0.0 0.0 595.276 793.701] /T1_2 81 0 R >> /Direction /L2R Wades rule helps to predict the general shape of a … /T1_0 62 0 R /BleedBox [0.0 0.0 595.276 793.701] /T1_3 63 0 R >> /Font << /Parent 8 0 R /GS1 60 0 R >> /MC0 197 0 R 11 0 obj >> /T1_6 86 0 R /Parent 9 0 R /T1_0 62 0 R >> /T1_2 62 0 R /Parent 7 0 R Le borane est l'élément le plus simple de la famille des boranes ainsi que le prototype des monoboranes. >> /Count 5 /T1_1 64 0 R >> /MediaBox [0.0 0.0 595.276 793.701] /T1_2 62 0 R Consequently it is highly reactive and can only be observed directly as a continuously produced, transitory, product in a flow system or from the reaction o… /Rotate 0 /ExtGState << << >> /Xi18 66 0 R /T1_6 141 0 R /Producer <41646F626520504446204C6962726172792031302E302E313B206D6F646966696564207573696E67206954657874AE20352E352E3020A9323030302D323031332069546578742047726F7570204E5620284147504C2D76657273696F6E2920284147504C2D76657273696F6E29> /ArtBox [0.0 0.0 595.276 793.701] /Properties << /ColorSpace << /GS0 61 0 R /T1_8 212 0 R /BleedBox [0.0 0.0 595.276 793.701] [borano]-a′,b′,c′-tricommo-x,y,z-[borane] is appropriate for cage compounds that can be interpreted in terms of recognizable single cages fused with three atoms in common (face fusion) (Recommendation 18). /Font << /T1_9 100 0 R /T1_3 65 0 R /T1_9 132 0 R /Type /Catalog /BleedBox [0.0 0.0 595.276 793.701] >> /T1_8 221 0 R /Xi14 66 0 R /Annots [45 0 R 46 0 R 47 0 R 48 0 R] /Xi25 66 0 R /GS1 60 0 R endobj endobj >> /ArtBox [0.0 0.0 595.276 793.701] /ArtBox [0.0 0.0 595.276 793.701] /ExtGState << /GS0 61 0 R /MC0 136 0 R >> endobj /CS0 [/Separation /Black /DeviceCMYK 59 0 R] /Contents [245 0 R 246 0 R 247 0 R] >> << 14 0 obj /MC0 243 0 R >> /XObject << >> /GS1 60 0 R /T1_2 62 0 R /CropBox [0.0 0.0 595.276 793.701] /Font << /XObject << /Fm0 88 0 R are used before "borane" to indicate the number of boron atoms in the compound. /Fm0 88 0 R /T1_6 65 0 R /T1_9 215 0 R /Properties << endobj /Properties << << /TrimBox [0.0 0.0 595.276 793.701] /T1_3 63 0 R << /Rotate 0 /T1_8 86 0 R >> /MC0 159 0 R /Kids [18 0 R 19 0 R 20 0 R 21 0 R 22 0 R] /CropBox [0.0 0.0 595.276 793.701] endobj >> /T1_3 63 0 R /Fm0 67 0 R /TrimBox [0.0 0.0 595.276 793.701] /Kids [28 0 R 29 0 R 30 0 R 31 0 R 32 0 R] >> Boranes and Borohydrides Boranes and the Bonding in boranes. /ColorSpace << /T1_4 87 0 R >> /ExtGState << /T1_4 63 0 R You need JavaScript enabled to view it. /T1_2 81 0 R /T1_6 65 0 R /Contents [218 0 R 219 0 R 220 0 R] /T1_4 87 0 R IUPAC | International Union of Pure and Applied Chemistry, Nomenclature for boranes and related species. >> /MC1 187 0 R /MediaBox [0.0 0.0 595.276 793.701] /ProcSet [/PDF /Text] /Fm0 82 0 R >> /CropBox [0.0 0.0 595.276 793.701] /Resources << /Fm0 82 0 R var addye71d16585ca2b847da241d7da5410dcb = 'webmaster' + '@'; /MediaBox [0.0 0.0 595.276 793.701] >> /Annots [251 0 R 252 0 R 253 0 R] /Properties << /T1_1 64 0 R /MediaBox [0.0 0.0 595.276 793.701] /T1_8 227 0 R /Contents [188 0 R 189 0 R 190 0 R] /Type /Page << /T1_4 87 0 R << /Xi9 66 0 R /T1_6 87 0 R endobj /T1_10 166 0 R /Contents [152 0 R 153 0 R 154 0 R] /ExtGState << /ExtGState << /T1_5 87 0 R /Parent 4 0 R endobj /GS0 61 0 R /T1_3 63 0 R /ProcSet [/PDF /Text] /ExtGState << /T1_6 86 0 R /Resources << /CropBox [0.0 0.0 595.276 793.701] /GS0 61 0 R /ArtBox [0.0 0.0 595.276 793.701] /BleedBox [0.0 0.0 595.276 793.701] >> /GS1 60 0 R 38 0 obj /ProcSet [/PDF /Text] /BleedBox [0.0 0.0 595.276 793.701] /T1_2 62 0 R >> /Fm0 82 0 R /T1_1 81 0 R /Xi17 66 0 R /Parent 8 0 R endobj /CS0 [/Separation /Black /DeviceCMYK 59 0 R] /T1_10 213 0 R /BleedBox [0.0 0.0 595.276 793.701] /Xi5 66 0 R /Resources << Copyright © 2020 IUPAC. /T1_2 81 0 R 9 0 obj endobj /T1_1 81 0 R /TrimBox [0.0 0.0 595.276 793.701] /Properties << /TrimBox [0.0 0.0 595.276 793.701] >> /GS0 61 0 R >> /Fm0 82 0 R They were investigated... Nomenclature. /ColorSpace << << /GS0 61 0 R /T1_0 62 0 R /BleedBox [0.0 0.0 595.276 793.701] M. A. Beckett et al. /XObject << /Resources << /Parent 8 0 R /T1_8 86 0 R /CropBox [0.0 0.0 595.276 793.701] /MC0 177 0 R /GS0 61 0 R /T1_5 86 0 R /TrimBox [0.0 0.0 595.276 793.701] /Rotate 0 /ArtBox [0.0 0.0 595.276 793.701] var addy_texte71d16585ca2b847da241d7da5410dcb = 'webmaster' + '@' + 'icmab' + '.' + 'es';document.getElementById('cloake71d16585ca2b847da241d7da5410dcb').innerHTML += ''+addy_texte71d16585ca2b847da241d7da5410dcb+'<\/a>'; This email address is being protected from spambots. An appraisal of the current IUPAC recommendations for nomenclature of boranes and related systems has been undertaken. /TrimBox [0.0 0.0 595.276 793.701] >> >> /MediaBox [0.0 0.0 595.276 793.701] /T1_7 228 0 R /T1_3 63 0 R /T1_0 64 0 R /Properties << /MediaBox [0.0 0.0 595.276 793.701] 23 0 obj /Xi19 66 0 R /T1_1 64 0 R /Rotate 0 /Properties << >> /Resources << /T1_2 62 0 R /Fm0 82 0 R << /GS1 60 0 R >> >> Example: B 5H 11 is pentaborane(11). /Kids [7 0 R 8 0 R 9 0 R 10 0 R 11 0 R] /CS0 [/Separation /Black /DeviceCMYK 59 0 R] /T1_10 156 0 R endobj /Fm0 88 0 R >> /Contents [137 0 R 138 0 R 139 0 R] /T1_10 146 0 R /ColorSpace << /T1_6 65 0 R /ModDate (D:20200306134554+01'00') /MediaBox [0.0 0.0 595.276 793.701] endobj >> >> /T1_11 164 0 R /CropBox [0.0 0.0 595.276 793.701] /Type /Page << /CropBox [0.0 0.0 595.276 793.701] %öäüß /MC1 160 0 R Le borane est également utilisé en pratique pour réduire des acides carboxyliques en alcools primaires. /T1_0 64 0 R /Contents [49 0 R 50 0 R 51 0 R 52 0 R 53 0 R 54 0 R 55 0 R 56 0 R 57 0 R 58 0 R] << /GS1 60 0 R /BleedBox [0.0 0.0 595.276 793.701] /T1_4 63 0 R /Annots [70 0 R 71 0 R 72 0 R 73 0 R 74 0 R 75 0 R 76 0 R 77 0 R] /Type /Page /MediaBox [0.0 0.0 595.276 793.701] /ArtBox [0.0 0.0 595.276 793.701] /T1_5 87 0 R /T1_6 86 0 R /CropBox [0.0 0.0 595.276 793.701] /ExtGState << /TrimBox [0.0 0.0 595.276 793.701] Other chapters consider nomenclature for radicals and ions. >> /Type /Page /T1_3 65 0 R /T1_6 242 0 R /Contents [161 0 R 162 0 R 163 0 R] /Xi24 66 0 R >> >> endobj >> /Rotate 0 This 1972 report expanded on a brief chapter on the nomenclature of boron compounds in the 1970 recommendations. /Xi21 66 0 R /ColorSpace << /MC0 102 0 R /Rotate 0 /T1_6 65 0 R /Resources << /MC1 151 0 R ‘borates’, or ‘carboranes’), are unacceptable and should no longer be used, even if in common use. /Fm0 88 0 R /ExtGState << /T1_8 107 0 R 29 0 obj << Ions related to boron hydrides 6. /Parent 7 0 R /GS1 60 0 R /GS1 60 0 R /Type /Page /MC1 121 0 R /T1_5 87 0 R Pour la classe de composés, voir boranes. /CropBox [0.0 0.0 595.276 793.701] /ArtBox [0.0 0.0 595.276 793.701] >> /Trapped /False The Introduction to the 1990 recommendations held that the area of boron nomenclature is ‘contentious’ and ‘specialized’ and that the relevant Chapter (I-11) “is presented as a survey of nomenclature of simpler boron systems because boranes are much discussed even at relatively elementary levels of chemistry, and because we wish to codify those basic principles which seem firmly established”. >> As a logical extension of the dicommo approach, it is recommended that tricommo nomenclature is used, e.g. /Properties << << >> /ArtBox [0.0 0.0 595.276 793.701] 6 0 obj /T1_1 81 0 R /XObject << Publication. /Resources << /T1_4 87 0 R /ExtGState << /Type /Pages /ColorSpace << >> 3 0 obj /GS0 61 0 R /CropBox [0.0 0.0 595.276 793.701] /Parent 7 0 R /T1_5 87 0 R /CropBox [0.0 0.0 595.276 793.701] /T1_2 81 0 R 5 0 obj /XObject << /BleedBox [0.0 0.0 595.276 793.701] /GS1 60 0 R /T1_5 86 0 R /T1_12 133 0 R /Rotate 0 /MediaBox [0.0 0.0 595.276 793.701] /Xi0 66 0 R >> >> << /Type /Page /T1_8 98 0 R /T1_5 87 0 R >> Your choices will not impact your visit. /Fm0 82 0 R >> >> /CropBox [0.0 0.0 595.276 793.701] /Contents [198 0 R 199 0 R 200 0 R] /Resources << /CS0 [/Separation /Black /DeviceCMYK 59 0 R] /Properties << /T1_8 202 0 R /GS0 61 0 R >> >> /Type /Page /Rotate 0 /Parent 11 0 R >> /MediaBox [0.0 0.0 595.276 793.701] /GS1 60 0 R 36 0 obj 31 0 obj /ProcSet [/PDF /Text] Elements of substitutive, additive and replacement nomenclature systems have been integrated into individual names to address contentious problems in boron nomenclature /ExtGState << /Font << >> >> >> 18 0 obj /Xi20 66 0 R /T1_8 194 0 R /Fm0 82 0 R /GS0 61 0 R /T1_2 63 0 R endobj /Type /Pages /CS0 [/Separation /Black /DeviceCMYK 59 0 R] << Un article de Wikipédia, l'encyclopédie libre. /XObject << Boranes are compounds consisting of boron and hydrogen. 28 0 obj /Font << /MediaBox [0.0 0.0 595.276 793.701] /MC0 206 0 R >> /Type /Page >> /T1_4 65 0 R 21 0 obj 1 0 obj /Properties << /Properties << >> /Rotate 0 This site uses functional cookies and external scripts to improve your experience. a) closo – BnHn2- … >> /T1_9 176 0 R /MC1 207 0 R /Properties << /ArtBox [0.0 0.0 595.276 793.701] /TrimBox [0.0 0.0 595.276 793.701] endobj L'atome de bore dans BH3 a six électrons de valence. /T1_3 63 0 R /T1_0 64 0 R 7.11 - The molecular hydrides of boron are called boranes. >> /BleedBox [0.0 0.0 595.276 793.701]