Trans-amidate platinum complexes anchoring water and N-donor molecules. The importance of hydrogen bonding

Gimeno-Prat, A. ; Martín, A. ; Baya, M. (Universidad de Zaragoza) ; Casas, J. M. (Universidad de Zaragoza)

Resumen: The square planar bisnitrile platinum(II) derivatives PtCl2(NCR)2 (R=Ph (1 a); Et (1 b); p-C6H4F (1 c); p-C6H4tBu (1 d); m-C6H3Me2 (1 e); o, p-C6H2Me3 (1 f)) react with tetrabutylammonium hydroxide to render the monoaquo NBu4]trans-PtCl(HNCOR)2(OH2)] (2 a–2 f). The water molecule is s-coordinated to platinum and the binding is reinforced by two strong hydrogen bonds to the neighboring amidate ligands (OH···OC). Substitution of water in 2 a by N-donor ligands can be efficiently achieved only in the presence of a dehydrating agent as magnesium sulphate or 4 Å molecular sieves. By following this strategy, compounds NBu4]trans-PtCl(HNCOPh)2(NH2R’)] (R’=H (3), NH2 (4), tBu (5 a), p-C6H4Me (5 b) have been isolated. The incoming ligands are s-coordinated to platinum and also establish strong hydrogen bonds to the amidates (NH···OC). Treatment of 2 a with halogens causes oxidation at the metal center, rendering the platinum(IV) derivatives NBu4]PtClX2(HNCOPh)2(OH2)] (X=Cl (6 a), Br (6 b), I (6 c)).

Idioma: Inglés

DOI: 10.1002/ejic.202200163

Año: 2022

Publicado en: European Journal of Inorganic Chemistry 2022, 22 (2022), e202200163 [8 pp.]
ISSN: 1434-1948

Factor impacto JCR: 2.3 (2022)

Categ. JCR: CHEMISTRY, INORGANIC & NUCLEAR rank: 21 / 42 = 0.5 (2022) - Q2 - T2

Factor impacto CITESCORE: 4.4 - Chemistry (Q2)

Factor impacto SCIMAGO: 0.527 - Inorganic Chemistry (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E17-20R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2021-122869NB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICIU-FEDER/PGC2018-094749-B-I00

Tipo y forma: Article (Published version)

Área (Departamento): Área Química Inorgánica (Dpto. Química Inorgánica)