Polyhedron p. 63 - 70 (2019)
Update date:2022-08-17
Topics:
Yazdani, Sima
Silva, Braden E.
Cao, Thomas C.
Rheingold, Arnold L.
Grotjahn, Douglas B.
We have examined coordination of PR3 = triphenylphosphine, triethylphosphine, triisopropyl phosphite, trimethyl phosphite, and 1,3,5-triaza-7-phosphaadamantane (PTA) to the fragment RuII(bda) to better understand how different phosphine and phosphite ligands influence the electronic and structural properties of the RuII complexes. PTA and P(OMe)3 afforded complexes with three phosphorus ligands bound to Ru, with the bda being tridentate (κ3-N,N,O) in complexes 4 and 5; for the other three phosphorus ligands, even in the presence of >2 equiv, only RuII(κ4-bda)(PR3)2 species 1–3 were seen. Both experimental and computational methods were used to study the complexes. Steric effects are the main factor determining whether bis- or tris(PR3) complexes are formed. Cyclic voltammetry studies of the complexes revealed an increase in RuIII/II potential upon having another phosphorus ligand in the equatorial position. Computational studies predict that the additional phosphine ligand in the equatorial plane of 4 engages in significant orbital mixing with the ruthenium center that results in lower energy bonding as compared to the axial phosphine ligands. This work provides the first evaluation of phosphorus ligand steric and electronic effects on the RuII(bda) fragment.
View MoreJinan Jianfeng Chemical Co., Ltd
Contact:0086-531-88110457
Address:sales01(-a-t-)pharmachemm{dot}c+o+m
Contact:+86-21-54391580
Address:Room 502,No.65,Lane 2388 Hongxin Road,Shanghai,China
Taizhou Shengxing Chempharm Co.,Ltd
Contact:+86-576-88516600
Address:Yantou Chemical Zone Jiaojiang Taizhou Zhejiang China
Zhengzhou Yuanli Biological Technology Co., Ltd.
Contact:+86-371-67897870/67897895
Address:No. 38, Qingyang Street, Zhengzhou, Henan, China
Contact:+86-28-88523492
Address:714rooms of Time Square, Pujiang County
Doi:10.1021/ol502449r
(2014)Doi:10.1080/10426500500263656
(2006)Doi:10.1016/j.jcat.2005.11.008
(2006)Doi:10.1016/S0022-328X(00)98139-7
(1976)Doi:10.1021/ja01332a015
(1933)Doi:10.1023/A:1016020430731
()