التفاصيل البيبلوغرافية
العنوان: |
Investigation of Pb–B Bonding in PbB2(BO)n− (n = 0–2): Transformation from Aromatic PbB2− to Pb[B2(BO)2]−/0 Complexes with B≡B Triple Bonds |
المؤلفون: |
Chen, Qiang, Chen, Wei-Jia, Wu, Xin-Yao, Chen, Teng-Teng, Yuan, Rui-Nan, Lu, Hai-Gang, Yuan, Dao-Fu, Li, Si-Dian, Wang, Lai-Sheng |
المصدر: |
Physical Chemistry Chemical Physics (PCCP); 2/14/2024, Vol. 26 Issue 6, p5356-5367, 12p |
مستخلص: |
Boron has been found to be able to form multiple bonds with lead. To probe Pb–B bonding, here we report an investigation of three Pb-doped boron clusters, PbB2−, PbB3O−, and PbB4O2−, which are produced by a laser ablation cluster source and characterized by photoelectron spectroscopy and ab initio calculations. The most stable structures of PbB2−, PbB3O−, and PbB4O2− are found to follow the formula, [PbB2(BO)n]− (n = 0–2), with zero, one, and two boronyl ligands coordinated to a triangular and aromatic PbB2 core, respectively. The PbB2− cluster contains a B=B double bond and two Pb–B single bonds. The coordination of BO is observed to weaken Pb–B bonding but strengthen the B=B bond in [PbB2(BO)n]− (n = 1, 2). The anionic [PbB2(BO)2]− and its corresponding neutral closed-shell [PbB2(BO)2] contain a B≡B triple bond. A low-lying Y-shaped isomer is also observed for PbB4O2−, consisting of a central sp2 hybridized B atom bonded to two boronyl ligands and a PbB unit. [ABSTRACT FROM AUTHOR] |
|
Copyright of Physical Chemistry Chemical Physics (PCCP) is the property of Royal Society of Chemistry and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
قاعدة البيانات: |
Complementary Index |