1965
DOI: 10.1021/ja01093a047
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A Six-Boron Carborane, (CH3)2C2B6H6, and B6H10-P(C6H5)3 from Hexaborane(10)

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Cited by 71 publications
(40 citation statements)
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“…Heteroatom-apart isomers are generally more favorable than heteroatom-adjacent isomers in heteroboranes and -borates [6,[54][55][56][57][58][59] (8-n-n¢)À (Fig. 2b), where Het or Het¢ may be equal or different heteroatoms and n and n¢ are the number of electrons donated by Het and Het¢.…”
Section: Hethet¢mentioning
confidence: 99%
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“…Heteroatom-apart isomers are generally more favorable than heteroatom-adjacent isomers in heteroboranes and -borates [6,[54][55][56][57][58][59] (8-n-n¢)À (Fig. 2b), where Het or Het¢ may be equal or different heteroatoms and n and n¢ are the number of electrons donated by Het and Het¢.…”
Section: Hethet¢mentioning
confidence: 99%
“…Experimentally known 11-vertex nido-heteroborane and -borate clusters include: group 14 heteroatoms, i.e., carbon [6][7][8][9], silicon [10][11][12][13], germanium [14][15][16][17] and tin [6][7][8][18][19][20][21]; group 15 heteroatoms, i.e., nitrogen, phosphorus [1,2], arsenic [5,[22][23][24][25][26][27][28][29][30][31][32] and antimony [33]; group 16 heteroatoms, i.e., sulfur [34], selenium [35][36][37][38][39][40][41] and tellurium [35-37, 42, 53]. Williams' qualitative rules predict isomers with lowcoordinate heteroatoms and separated heteroatoms to be preferred [6,54,55]. While these rules suffice to select the most stable closo-heteroboranes, the presence of additional endo-hydrogen atoms, the large number of isomers and possibly irresolvable con...…”
Section: Introductionmentioning
confidence: 99%
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“…The roots of modern boron cluster chemistry originated in a few seminal works by Wade [1,2], Hart and Lipscomb [3][4][5][6], and Williams [7][8][9]. These compounds, which are characterized by their electron deficiencies, form nonclassical three-center two-electron bonds and have been the topic of numerous texts [10][11][12][13][14].…”
Section: Introductionmentioning
confidence: 99%
“…This leads to the very familiar deltahedron geometries for closo-CxBn−xHn−x+2 with n+1 skeletal electron pairs, nido-CxBn−xHn−x+4 with n+2 skeletal electron pairs, and arachno-C x B n−x H n−x+6 with n+3 skeletal electron pairs, determined empirically by Wade's Rules [1,2,15,16]. Although a great deal of time has been spent in comparing and contrasting carborane systems of varying size in terms of stability, rearrangement, and reactivity [7,8,[17][18][19][20][21][22][23], a special effort has been expended in understanding closo-B 12 H 12 2À , closo-C 2 B 10 H 12 , and their respective derivatives [21,[24][25][26][27][28][29], which is due primarily to their unusually high stability. An eclectic array of mechanisms have been quite naturally suggested for the intermolecular rearrangement of closo-C 2 B 10 H 12 , from those involving highly symmetric cubeoctahedral and anticubeoctahedral transition states to those with relatively simple triangular face rotations (TFRs) and diamond-squarediamond (DSD) steps [4,5,20,25,[30][31][32][33][34][35][36].…”
Section: Introductionmentioning
confidence: 99%