Palladium bis-pincer complexes with controlled rigidity and inter-metal distance
Palladium bis-pincer complexes with controlled rigidity and inter-metal distance
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具有受控刚性和金属间距离的钯双钳配合物
DOI:
10.1039/d0qi01111h
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发表时间:
2020
影响因子:
7
通讯作者:
Ozerov, Oleg V.
中科院分区:
文献类型:
--
作者:
Yu, Cheng-Han;Zhu, Congzhi;Ji, Xiaozhou;Hu, Wei;Xie, Haomiao;Bhuvanesh, Nattamai;Fang, Lei;Ozerov, Oleg V.
We report a series of redox-active bis(pincer) Pd(II) complexes in which the redox active units are based on either a diarylamido or a carbazolide framework. Compounds 1 and 2 contain two full diarylamido/bis(pincer) PNP units connected either via an Ar–O–Ar linker (1) or an Ar–Ar bond (2). Compound 3 is a fused bis(pincer) where the two PNP units share an aromatic ring. Compound 4 is built around an indolo[3,2-b]carbazole core in which two NNN pincers share an aromatic ring similarly to 3. These metal complexes all display two reversible oxidation waves with the ΔE values increasing in the order of 1 < 2 < 4 < 3. The same trend in increasing electronic coupling emerges from the analysis of the IV-CT bands in the NIR portion of the optical spectra. The analysis of these compounds was further advanced by data from EPR spectroscopy, X-ray diffractometry, and DFT calculations. It is concluded that the monooxidized cations 2+–4+ belong to Class III on the Robin-Day classification of mixed-valence compounds. Compound 4 possesses enforced near-planarity that enables delocalization of the unpaired electron in 4+ across a broader conjugated system compared to 3+.
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影响因子:
4
作者:
V. Madhira;Peng Ren;O. Vechorkin;Xile Hu;David A. Vicic
通讯作者:
David A. Vicic
影响因子:
4.6
作者:
A. Radosevich;Jonathan G. Melnick;S. Stoian;Deborha Bacciu;Chun;B. Foxman;O. Ozerov;D. Nocera
通讯作者:
D. Nocera
DOI:
10.1039/c39930001395
发表时间:
1993
期刊:
Journal of The Chemical Society, Chemical Communications
影响因子:
--
作者:
S. Loeb;G. Shimizu
通讯作者:
G. Shimizu
影响因子:
4.6
作者:
Cheng;Xin Yang;Xiaozhou Ji;Chen‐Hao Wang;Qingheng Lai;N. Bhuvanesh;O. Ozerov
通讯作者:
O. Ozerov
影响因子:
--
作者:
Ryan A. Zarkesh;J. Ziller;A. F. Heyduk
通讯作者:
A. F. Heyduk