Bonding modes of nitrite and nitrate in palladium(II) and platinum(II) complexes |
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| Authors: | Tae Hwan Noh Sung Min Kim Kyung Hwan Park Ok-Sang Jung |
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| Institution: | 1. Department of Chemistry and Research Institute of Functional Materials Chemistry, Pusan National University, Pusan, 609-735, Korea
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| Abstract: | The crystal structures of the well-known complexes, (Me4en)M(II)X2] (Me4en?=?N,N,N??,N??-tetramethylethylenediamine; M(II)?=?Pd(II) or Pt(II); X ??=?NO2 ? or NO3 ?) have been determined. For (Me4en)Pd(NO2)2] and (Me4en)Pt(NO2)2], the nitrite anion acts as a monodentate N-donor ligand in the solid state. In contrast, for (Me4en)Pd(ONO2)(O2NO)], the two nitrate anions act as a monodentate O-donor (ONO2) and a bidentate O,O??-donor (O2NO). Recrystallization of (Me4en)Pt(NO3)2] from Me2SO yields the Me2SO adduct with a monodentate O-donor nitrate and a counteranionic nitrate, (Me4en)Pt(ONO2)(S-Me2SO)](NO3). The solution behavior of these complexes, including the equilibrium between coordinated and free Me2SO, has been investigated. |
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