Issue 44, 2010
From the journal:

Dalton Transactions

Push-Pull Nitrile Ligands Exhibit Specific Hydration Patterns†

Tatyana B. Anisimova,a   Nadezhda A. Bokach,*a   Konstantin V. Luzyanin,b   Matti Haukkac  and  Vadim Yu. Kukushkin*ad  

* Corresponding authors

a Department of Chemistry, St. Petersburg State University, Universitetsky Pr. 26, 198504 Stary Petergof, Russian Federation
E-mail: bokach@nb17701.spb.edu, kukushkin@vk2100.spb.edu

b Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, TU Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal

c Department of Chemistry, University of Eastern Finland, P.O. Box 111, FI-80101 Joensuu, Finland

d Institute of Macromolecular Compounds of the Russian Academy of Sciences, V.O. Bolshoii Pr. 31, 199004 St. Petersburg, Russian Federation

Abstract

The reaction between K[PtCl3(Me2SO)] or prepared in this work cis- and trans-[PtCl2(NCNR2)(Me2SO)] (R2 = Me2,1; C4H8O, 2; C5H103) with an excess of NCNR2 in water gives the cationic bischelate [Pt{κ2-N,N′′′-NH[double bond, length as m-dash]C(NMe2)OC(NMe2)[double bond, length as m-dash]NH}2]2+ (42+) and the monochelates [PtCl{κ2-N,O-NH[double bond, length as m-dash]C(NR2)NC(NR2)[double bond, length as m-dash]O}(Me2SO)] (R2 = C4H8O, 5; C5H10, 6). Complex 42+ was released from the reaction mixture as 4·[PtCl3(Me2SO)]2·(H2O)2 or it was precipitated as 4·[A]2 (A = pic, 4·[pic]2; PF6, 4·[PF6]2; BPh4, 4·[BPh4]2·(NH2CONMe2)) by addition of picric acid, NaPF6, or NaBPh4, respectively, to the filtrate obtained after separation of 4·[PtCl3(Me2SO)]2·(H2O)2. In 2, the dialkylcyanamide ligand undergoes bond cleavage giving the known trans-[PtCl2{N(H)C4H8O}(Me2SO)] (trans-7). All complexes were characterized by elemental analyses (C, H, N), high resolution ESI-MS, IR, 1H and 13C{1H} NMR spectroscopic techniques, including 2D NMR correlation experiments (1H,1H-COSY, 1H,13C-HMQC/1H,13C HSQC, 1H,13C-HMBC, and 1H,1H-NOESY). The structures of cis-1, cis-3, 4·[PtCl3(Me2SO)]2·(H2O)2, 4·[BPh4]2·(NH2CONMe2) and 5 were determined by a single-crystal X-ray diffraction.

Graphical abstract: Push-Pull Nitrile Ligands Exhibit Specific Hydration Patterns

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Article information

DOI
https://doi.org/10.1039/C0DT00711K
Article type
Paper
Submitted
23 Jun 2010
Accepted
19 Aug 2010
First published
13 Oct 2010

Dalton Trans., 2010,39, 10790-10798

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Push-Pull Nitrile Ligands Exhibit Specific Hydration Patterns

T. B. Anisimova, N. A. Bokach, K. V. Luzyanin, M. Haukka and V. Yu. Kukushkin, Dalton Trans., 2010, 39, 10790 DOI: 10.1039/C0DT00711K

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