Direct synthesis of PT-containing metallaligand and its complexes with transition metals
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GARNOVSKII, A.; KUKUSHKIN, V.; POMBEIRO, A.J.L.. Direct synthesis of PT-containing metallaligand and its complexes with transition metals. In: Чугаевская конференция по координационной химии. 20-24 iunie 2005, Chişinău. Chișinău, Republica Moldova: Tipografia Academiei de Ştiinţe a Moldovei, 2005, pp. 231-232.
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Чугаевская конференция по координационной химии 2005
Conferința "Чугаевская конференция по координационной химии"
Chişinău, Moldova, 20-24 iunie 2005

Direct synthesis of PT-containing metallaligand and its complexes with transition metals


Pag. 231-232

Garnovskii A.123, Kukushkin V.123, Pombeiro A.J.L.123
 
1 Research Institute of Physical and Organic Chemistry, Rostov State University of Rostov-on-Don,,
2 Saint Petersburg State University, Saint Petersburg,
3 Technical University of Lisbon
 
Disponibil în IBN: 28 mai 2020



Teza

Treatment of trans-[PtCl4(RCN)2] (R = Me, Et) with the hydrazone oximes
MeC(=NOH)C(R’)=NNH2 (R’ = Me, Ph) at 45 °C in CH2Cl2 led to the formation of
trans-[PtCl4{NH=C(R)ON=C(Me)C(R’)=NNH2}2] (R/R’ = Me/Ph, Et/Me, Et/Ph 1)

due to the regioselective OH-addition of the bifunctional MeC(=NOH)C(R’)=NNH2
to the nitrile group. The reaction of 1 and Ph3P=CHCO2Me allows the formation
of the Pt(II) complex trans-[PtCl2{NH=C(Et)ON=C(Me)C(Ph)=NNH2}2] (2). The
Schiff condensation of the free NH2 groups of 2 with aromatic aldehydes, i.e.
2-OH-5-NO2-benzaldehyde and 4-nitrobenzaldehyde brings about the formation
of the platinum(II) complexes trans-[PtCl2{NH=C(Et)ON=C(Me)C(Ph)=NN=CH(
C6H3-2-OH-5-NO2}2] (3) and trans-[PtCl2{NH=C(Et)ON=C(Me)C(Ph)=NN=CH(C
6H4-4-NO2}2], respectively, containing functionalized remote peripherical groups.
Metallization of 3 (fig), which can be considered as a novel type of metallaligand,
was achieved by its reaction with M(OAc)2·nH2O (M = Cu, n = 2; M = Co, n = 4)
in 1:1 molar ratio furnishing solid heteronuclear compounds with composition
[Pt]:[M] = 1:1. The complexes were characterized by C, H, N elemental analyses,
FAB+ mass-spectrometry, IR, 1H, 13C{1H} and 195Pt NMR spectroscopies, X-ray
structures were determined for 1, 2 and 3.