抄録
Nanosheet compounds Pd11(SiiPr)2(SiiPr2)4(CNtBu)10 (1) and Pd11(SiiPr)2(SiiPr2)4(CNMes)10 (2), containing two Pd7(SiiPr)(SiiPr2)2(CNR)4 plates (R=tBu or Mes) connected with three common Pd atoms, were investigated with DFT method. All Pd atoms are somewhat positively charged and the electron density is accumulated between the Pd and Si atoms, indicating that a charge transfer (CT) occurs from the Pd to the Si atoms of the SiMe2 and SiMe groups. Negative regions of the Laplacian of the electron density were found between the Pd and Si atoms. A model of a seven-coordinated Si species, that is, Pd5(Pd-SiMe), is predicted to be a stable pentagonal bipyramidal molecule. Five Pd atoms in the equatorial plane form bonding overlaps with two 3p orbitals of the Si atom. This is a new type of hypervalency. The Ge analogues have geometry and an electronic structure similar to those of the Si compounds. But their formation energies are smaller than those of the Si analogues. The use of the element Si is crucial to synthesize these nanoplate compounds.
| 元の言語 | 英語 |
|---|---|
| ページ（範囲） | 1076-1087 |
| ページ数 | 12 |
| ジャーナル | Chemistry - A European Journal |
| 巻 | 22 |
| 発行部数 | 3 |
| DOI | |
| 出版物ステータス | 出版済み - 1 18 2016 |
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All Science Journal Classification (ASJC) codes
- Catalysis
- Organic Chemistry
これを引用
Theoretical Study of Pd11Si6 Nanosheet Compounds Including Seven-Coordinated Si Species and Its Ge Analogues. / Chen, Yue; Sunada, Yusuke; Nagashima, Hideo; Sakaki, Shigeyoshi.
：: Chemistry - A European Journal, 巻 22, 番号 3, 18.01.2016, p. 1076-1087.研究成果: ジャーナルへの寄稿 › 記事
}
TY - JOUR
T1 - Theoretical Study of Pd11Si6 Nanosheet Compounds Including Seven-Coordinated Si Species and Its Ge Analogues
AU - Chen, Yue
AU - Sunada, Yusuke
AU - Nagashima, Hideo
AU - Sakaki, Shigeyoshi
PY - 2016/1/18
Y1 - 2016/1/18
N2 - Nanosheet compounds Pd11(SiiPr)2(SiiPr2)4(CNtBu)10 (1) and Pd11(SiiPr)2(SiiPr2)4(CNMes)10 (2), containing two Pd7(SiiPr)(SiiPr2)2(CNR)4 plates (R=tBu or Mes) connected with three common Pd atoms, were investigated with DFT method. All Pd atoms are somewhat positively charged and the electron density is accumulated between the Pd and Si atoms, indicating that a charge transfer (CT) occurs from the Pd to the Si atoms of the SiMe2 and SiMe groups. Negative regions of the Laplacian of the electron density were found between the Pd and Si atoms. A model of a seven-coordinated Si species, that is, Pd5(Pd-SiMe), is predicted to be a stable pentagonal bipyramidal molecule. Five Pd atoms in the equatorial plane form bonding overlaps with two 3p orbitals of the Si atom. This is a new type of hypervalency. The Ge analogues have geometry and an electronic structure similar to those of the Si compounds. But their formation energies are smaller than those of the Si analogues. The use of the element Si is crucial to synthesize these nanoplate compounds.
AB - Nanosheet compounds Pd11(SiiPr)2(SiiPr2)4(CNtBu)10 (1) and Pd11(SiiPr)2(SiiPr2)4(CNMes)10 (2), containing two Pd7(SiiPr)(SiiPr2)2(CNR)4 plates (R=tBu or Mes) connected with three common Pd atoms, were investigated with DFT method. All Pd atoms are somewhat positively charged and the electron density is accumulated between the Pd and Si atoms, indicating that a charge transfer (CT) occurs from the Pd to the Si atoms of the SiMe2 and SiMe groups. Negative regions of the Laplacian of the electron density were found between the Pd and Si atoms. A model of a seven-coordinated Si species, that is, Pd5(Pd-SiMe), is predicted to be a stable pentagonal bipyramidal molecule. Five Pd atoms in the equatorial plane form bonding overlaps with two 3p orbitals of the Si atom. This is a new type of hypervalency. The Ge analogues have geometry and an electronic structure similar to those of the Si compounds. But their formation energies are smaller than those of the Si analogues. The use of the element Si is crucial to synthesize these nanoplate compounds.
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UR - http://www.scopus.com/inward/citedby.url?scp=84954027919&partnerID=8YFLogxK
U2 - 10.1002/chem.201503489
DO - 10.1002/chem.201503489
M3 - Article
AN - SCOPUS:84954027919
VL - 22
SP - 1076
EP - 1087
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 3
ER -