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Reaction of dimethylplatinum(II) complexes with PhCH 2 CH 2 Br: Comparative reactivity with CH 3 CH 2 Br and PhCH 2 Br and synthesis of Pt(IV) complexes
Author(s) -
Sangari Mozhgan Samandar,
Rashidi Mehdi,
Nabavizadeh S. Masoud,
Askari Banafshe,
Niroomand Hosseini Fatemeh
Publication year - 2018
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3954
Subject(s) - chemistry , reactivity (psychology) , oxidative addition , medicinal chemistry , octahedron , platinum , stereochemistry , nuclear magnetic resonance spectroscopy , reagent , alkyl , crystal structure , crystallography , catalysis , organic chemistry , medicine , alternative medicine , pathology
Oxidative addition of 2‐phenylethylbromide (PhCH 2 CH 2 Br) to dimethylplatinum(II) complexes [PtMe 2 (NN)] ( 1a , NN = 2,2′‐bipyridine (bpy); 1b , NN = 1,10‐phenanthroline (phen)) afforded the new organoplatinum(IV) complexes [PtMe 2 (Br)(PhCH 2 CH 2 )(bpy)], as a mixture of trans ( 2a ) and cis ( 3a ) isomers, and [PtMe 2 (Br)(PhCH 2 CH 2 )(phen)], as a mixture of trans ( 2b ) and cis ( 3b ) isomers, respectively. The new Pt(IV) complexes were readily characterized using multinuclear ( 1 H and 13 C) NMR spectroscopy and elemental microanalysis. The crystal structure of 2a was further determined using X‐ray crystallography indicating an octahedral geometry around the platinum centre. A comparison of reactivity of RCH 2 Br reagents (R = CH 3 , Ph or PhCH 2 ) in their oxidative addition reactions with complex 1a , with an emphasis on the effects of the R groups of alkyl halides, was also conducted using density functional theory.