Acloso-12-Vertex Dinickelaborane: [(η5-C5H5)2Ni2B10H10]

Dou, J.-M.; Hu, C.-H.; Gu, Jianli; Nie, Yong; Yao, H.-J.; Jin, R.; Zheng, Pengjun

doi:10.1107/s0108270198004077

Cited by 2 publications

(1 citation statement)

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“…B7Ni2-6 ( Figure 3) the unique degree 6 vertex is occupied by a boron atom with nickel atoms at two of the degree 4 vertices. [12], which has been structurally characterized by X-ray crystallography [13]. This resembles the synthesis of the higher energy derivatives of ortho dicarbaborane, 1,2-C 2 B 10 H 12 rather than the lower energy meta and para isomers from the reactions of alkynes with decaborane, B 10 H 14 [10].…”

Section: Discussionmentioning

confidence: 98%

Polyhedral dinickelaboranes as analogues of the dicarbaboranes

et al. 2016

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The lowest energy structures of the dinickelaboranes Cp 2 Ni 2 B n-2 H n-2 (n = 8 to 12) are found by density functional theory to be the most spherical closo deltahedra similar to those of the isoelectronic dicarbaboranes C 2 B n-2 H n. The nickel atoms in such dinickelaboranes do not prefer higher degree vertices in contrast to metallaboranes containing earlier transition metals. Similarly, Cp 2 Ni 2 B n-2 H n-2 structures having adjacent nickel atoms are of higher energy than isomeric structures having non-adjacent nickel atoms. Thus the brown icosahedral ortho Cp 2 Ni 2 B 10 H 10 isomer with adjacent nickel atoms obtained by Hawthorne and co-workers from B 10 H 10 2and Cp 2 Ni, [Cp 3 Ni 2 ][BF 4 ], or Cp 2 Ni 2 (CO) 2 and structurally characterized by X-ray crystallography is not the lowest energy isomer but instead a kinetically favored product. However, the structure with non-adjacent nickel atoms suggested by 11 B NMR for the Cp 2 Ni 2 B 8 H 8 isomer isolated in small quantities by Grimes and co-workers from a B 5 H 8-/C 5 H 5-/NiBr 2 reaction mixture is found to be the lowest energy isomer by ~6 kcal/mol. This latter reaction also gives small quantities of a yellow Cp 2 Ni 2 B 10 H 10 isomer suggested by its 11 B NMR spectrum to be the lowest energy meta isomer with non-adjacent non-antipodal nickel atoms.

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Section: Discussionmentioning

confidence: 98%

Polyhedral dinickelaboranes as analogues of the dicarbaboranes

et al. 2016

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Fifty years of the closo-decaborate anion chemistry

Sivaev

Prikaznov

Naoufal

2010

Collect. Czech. Chem. Commun.

173

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The review covers the fifty-year period of chemistry of the closo-decaborate anion [B10H10]2– from the first report by Hawthorne and Pitochelli. The main attention is paid to reactions of substitution of various atoms and groups for hydrogen atoms. The general stability of the closo-decaborate cage, including its protonation, cage-opening and cage oxidation reactions, is considered as well. A review with 242 references.

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Acloso-12-Vertex Dinickelaborane: [(η⁵-C₅H₅)₂Ni₂B₁₀H₁₀]

Cited by 2 publications

References 1 publication

Polyhedral dinickelaboranes as analogues of the dicarbaboranes

Polyhedral dinickelaboranes as analogues of the dicarbaboranes

Fifty years of the closo-decaborate anion chemistry

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