Syntheses, Structures, and Properties of Ruthenium(II) Complexes with NOS Tridentate Schiff Base Ligands

IF 1.9 4区化学 Q3 CHEMISTRY, MULTIDISCIPLINARY

ChemistrySelect Pub Date : 2025-06-06 DOI:10.1002/slct.202501184

Zhi-Cui Zhang, Ya-Meng Zhu, Tian-Tian Sun, Ai-Quan Jia, Qian-Feng Zhang

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Abstract

Treatment of the Schiff base (E)-((2-(methylsulfinyl phenyl))imino)methyl)-4-nitrophenol (HL1) with [RuHCl(CO)(PPh3)3] and cis-[RuCl2(dmso)4] (dmso = dimethyl sulfoxide) in the presence of triethylamine afforded complexes [RuCl(L1)(CO)(PPh3)] (1) and [RuCl(L1)(dmso)2] (2), respectively. Similar reactions between (E)-4-chloro-2-((2-(methylsulfinyl phenyl)imino)methyl) phenol (HL2) and [RuCl2(PPh3)3] or [RuCl2(cod)]n (cod = 1,5-cyclooctadiene) gave complexes [RuCl(L2)(PPh3)2] (3) and [Ru(L2)2] (4), respectively. The molecular structures of the ruthenium(II) complexes 1−4 were confirmed by single-crystal X-ray crystallography, showing that the ruthenium metal centers are all six-coordinated with the tridentate [ONS] Schiff base ligands L1-/L2- to form a five-membered and a six-membered chelate ring. The O‒Ru‒S bond angles of the chelate ligands L1-/L2- in complexes 1−4 range from 172.30(14)˚ to 176.8(2)˚. Complexes 1−4 were also characterized by infrared, 1H, 13C, COSY, NOESY and HSQC NMR, UV-vis spectroscopies and electrochemical tests. In addition, the catalytic properties of ruthenium complexes 1−4 were investigated for the cyclopropanation of styrene.

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含NOS三齿希夫碱配体的钌（II）配合物的合成、结构和性质

在三乙胺存在下，用[RuHCl(CO)(PPh3)3]和顺式-[RuCl2(dmso)4] （dmso =二甲亚砜）处理希夫碱(E)-(（2-（甲基亚砜苯基））-4-硝基苯酚（HL1），分别得到配合物[RuCl(L1)(CO)(PPh3)](1)和[RuCl(L1)(dmso)2](2)。(E)-4-氯-2-（（2-（甲基亚砜苯基）亚氨基）甲基）苯酚（HL2）与[RuCl2(PPh3)3]或[RuCl2(cod)]n （cod = 1,5-环二烯）之间的类似反应分别得到配合物[RuCl(L2)(PPh3)2](3)和[Ru(L2)2](4)。通过单晶x射线晶体学证实了钌（II）配合物1 ~ 4的分子结构，表明钌金属中心均与三齿[ONS]希夫碱配体L1-/L2-六配位，形成五元和六元螯合环。配合物1 ~ 4中螯合配体L1-/L2-的O-Ru-S键角范围为172.30（14）˚~ 176.8(2)˚。配合物1 ~ 4也通过红外、1H、13C、COSY、NOESY和HSQC NMR、紫外可见光谱和电化学测试进行了表征。此外，研究了钌配合物1 ~ 4对苯乙烯环丙烷化反应的催化性能。

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来源期刊

ChemistrySelect Chemistry-General Chemistry

CiteScore

3.30

自引率

4.80%

发文量

1809

审稿时长

1.6 months

期刊介绍： ChemistrySelect is the latest journal from ChemPubSoc Europe and Wiley-VCH. It offers researchers a quality society-owned journal in which to publish their work in all areas of chemistry. Manuscripts are evaluated by active researchers to ensure they add meaningfully to the scientific literature, and those accepted are processed quickly to ensure rapid online publication.