Kinetika i mehanizam reakcija supstitucije između [Ru(trpi)(bpi)Cl]+ sa nukleofilima gvanozin-5′-monofosfatom, L-histidinom, tioureom i dimetilsulfoksidom proučavani su spektrofotometrijski u 0,1 M NaClO4 na 310 K. Red reaktivnosti za odabrane ligande je: tiourea > gvanozin-5′-monofosfat > L-histidin > DMSO. Ovaj red je povezan sa elektronskim, strukturnim i hemijskim karakteristikama kompleksa i nukleofila. Reakcija supstitucije sa tioureom je proučavana na tri različite temperature (288, 298 i 310 K). Negativna entropija aktivacije DS = potvrđuje asocijativni način aktivacije. Formiranje kompleksa [Ru(trpi)(bpi)H2O]2+ sa ligandima ...
... ruthenium compounds belong to
the ‘‘border line’’ group, whichmeans that they are somehow
[Ru(trpy)(bpy)Cl]
Scheme 1
+ + L [Ru(trpy)(bpy)L]+ + Cl-
L = 5'-GMP, L-His, Tu, DMSO
k2
k1
Table 1 Rate constants for the substitution reaction of [Ru(trpy)
(bpy)Cl]2? complex with selected ...
... ¼ 50 � GMPH or L� HisHÞ
ð5Þ
and the corresponding constants are given by:
bp;q;r ¼
½MpHqLr�
½M]p½H]q½L]r
ð6Þ
where L is the deprotonated molecule of the ligand.
In this study, the convention has been adopted whereby
a complex containing a metal ion, M, proton, H, and
ligand, L, takes the general ...
... between [Ru(trpy)(bpy)Cl]? and nucleophiles such
as thiourea (Tu), dimethylsulfoxide (DMSO), L-histidine
(L-His), and guanosine-50-monophosphate (50-GMP) by con-
ventional UV–Vis spectrophotometry. The ligands L-His and
50-GMP are biologically relevant molecules. Tu is commonly
used as a ‘‘protective ...
Aleksandar M. Mijatović, Ratomir M. Jelić, Jovana Bogojeski, Živadin D. Bugarčić, Biljana Petrović. "Kinetics, mechanism, and equilibrium studies of the reactions between a ruthenium(II) complex and some nitrogen- and sulfur-donor nucleophiles" in Monatshefte für Chemie - Chemical Monthly, Springer Science and Business Media LLC (2013). https://doi.org/10.1007/s00706-013-1044-1
