The cis isomer trends to convert to trans one in chloroform solvent. P5 and P6 were formed when the molar ratio of mono isopropyl eugenoxyacetate and DPPE of 1:1 and 1:2, respectively. The structures of P4÷P6 were elucidated by Pt analysis, ESI-MS, IR and 1H NMR spectra studies. | Vietnam Journal of Chemistry, International Edition, 55(6): 775-780, 2017 DOI: Interaction between triphenylphosphine or 1,2-bis(diphenylphosphino)ethane with some complexes K[PtCl3(olefin)] (olefin: methyleugenol, safrole, isopropyl eugenoxyacetate) Le Xuan Chien1, Nguyen Quynh Chi2, Nguyen Dang Dat3, Nguyen Thi Thanh Chi3* 1 Hoa Binh College of Education 2 Faculty of National Sciences, Tran Quoc Tuan University 3 Faculty of Chemistry, Hanoi National University of Education Received 3 November 2016; Accepted for publication 29 December 2017 Abstract Novel study on the interaction between K[PtCl3(olefin)] (olefin: methyleugenol, safrole and isopropyl eugenoxyacetate) with TPP and DPPE shows that TPP and DPPE readily replace the olefins to form complexes [PtCl2(TPP)2] (P4), [PtCl2(DPPE)] (P5) and [Pt(DPPE)2]Cl2 (P6). P4 possesses trans configuration when the molar ratio of the mono olefin and TPP of 1:1. When the ratio is 1:2, P4 is a mixture of trans and cis isomers of which trans one is prevailing. The cis isomer trends to convert to trans one in chloroform solvent. P5 and P6 were formed when the molar ratio of mono isopropyl eugenoxyacetate and DPPE of 1:1 and 1:2, respectively. The structures of P4÷P6 were elucidated by Pt analysis, ESI-MS, IR and 1H NMR spectra studies. Keywords. Pt(II) complexes, olefins, phosphine derivatives. 1. INTRODUCTION 2. EXPERIMENTAL AND RESULTS Organometallic compounds are ones with direct metal-carbon bonds (M-C), compounds containing M-P or M-H bonds are now also included. In chemical industry, with the presence of Pt and Pd, many of the most important catalysts for numerous vital manufacturing processes have been prepared. In these processes, organometallic complexes of Pt or Pd are well known key intermediates [1, 2]. The high impact of these processes is confirmed by the Nobel prizes, such as Nobel prize (2010) for Richard F. Heck, Ei-ichi Negishi and Akira Suzuki for .
