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Study on the interaction between [Pt( μ ‐Cl)(isopropyl eugenoxyacetate‐1H)] 2 and 1,3‐diisopropylbenzimidazolium bromide
Author(s) -
Thong Pham Van,
Thang Nguyen Manh,
Chi Nguyen Thi Thanh
Publication year - 2019
Publication title -
vietnam journal of chemistry
Language(s) - English
Resource type - Journals
eISSN - 2572-8288
pISSN - 0866-7144
DOI - 10.1002/vjch.201900024
Subject(s) - bromide , chemistry , deprotonation , isopropyl , yield (engineering) , proton nmr , ring (chemistry) , base (topology) , molar ratio , chloride , benzyl bromide , crystallography , carbon 13 nmr , medicinal chemistry , stereochemistry , organic chemistry , materials science , catalysis , ion , mathematical analysis , mathematics , metallurgy
Abstract The interaction between the dinuclear chelate ring complex [Pt( μ ‐Cl)( i PrEug)] 2 ( 1 ) ( i PrEug: deprotonated isopropyl eugenoxyacetate) and 1,3‐diisopropylbenzimidazolium bromide ( i Pr 2 ‐bimy·HBr) has been studied for the first time. The result shows that the chloride bridges in 1 are easily cleaved by the i Pr 2 ‐bimy in the present of base to form a mixture ( P hh ) of two complexes [PtBr( i PrEug)( i Pr 2 ‐bimy)] ( 2 ) and [PtCl( i PrEug)( i Pr 2 ‐bimy)] ( 3 ), and the molar ratio of 2 : 3 in P hh depends on the used base Ag 2 O or Na 2 CO 3 /NaOOCCH 3 /NaHCO 3 /NaOH. The reaction of P hh with NaBr afforded complex 2 with high yield. The structure of 2 was determined by weight method, ESI‐MS, IR, 1 H NMR, 13 C NMR, HSQC spectroscopies and single‐crystal X‐ray diffraction. The NMR and XRD studies also reveal that the introdution of i Pr 2 ‐bimy leads to a weakening of the Pt‐(C9=C10) bond and strengthening of the Pt‐C5 bond in 2 .