Palladium(II) and Platinum(II) Bis(Stibinidene) Complexes with Intramolecular Hydrogen‐Bond Enforced Geometries

Author:

Zechovský Jan1,Kertész Erik2,Erben Milan1,Hejda Martin1ORCID,Jambor Roman1,Růžička Aleš1,Benkő Zoltán23,Dostál Libor1ORCID

Affiliation:

1. Department of General and Inorganic Chemistry FCHT University of Pardubice Studentská 573 532 10 Pardubice Czech Republic

2. Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Műegyetem rkp. 3 1111 Budapest Hungary

3. HUN-REN-BME Computation Driven Chemistry Research Group Műegyetem rkp. 3 1111 Budapest Hungary

Abstract

AbstractThe coordination capability of two N,C,N pincer coordinated stibinidenes, i. e. bis(imino)‐ [2,6‐(DippN=CH)2C6H3]Sb (1) or imino‐amino‐ [2‐(DippN=CH)‐6‐(DippNHCH2)C6H3]Sb (2) toward palladium(II) and platinum(II) centers was examined. In the course of this study, seven new square‐planar bis(stibinidene) complexes were synthesized and characterized by NMR, IR, Raman, UV‐vis spectroscopy and single crystal (sc)‐X‐ray diffraction analysis. In all cases, both stibinidene ligands 1 or 2 adopt trans positions, but differ significantly in the torsion angle describing mutual orientation of aromatic rings of the stibinidenes along the Sb−Pd/Pt−Sb axes. Furthermore, majority of complexes form isomers in solution most probably due to a hindered rotation around Sb−Pd/Pt bonds caused by bulkiness of 1 and 2. This phenomenon also seems to be influenced by the absence/presence of a pendant −CH2NH− group in 1/2 that is able to form intramolecular hydrogen bonds with the adjacent chlorine atom(s) attached to the metal centers. The whole problem was subjected to a theoretical study focusing on the role of hydrogen bonds in structure architecture of the complexes. To describe the UV‐vis spectra of these highly coloured complexes, TD‐DFT calculations were employed. These outline differences between the stibinidene ligands, the transition metals as well as between the charge of the complexes (neutral or anionic).

Funder

Grantová Agentura České Republiky

Budapesti Műszaki és Gazdaságtudományi Egyetem

Nemzeti Kutatási, Fejlesztési és Innovaciós Alap

Publisher

Wiley

Subject

General Chemistry

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3