Issue 4, 2011
From the journal:

Dalton Transactions

Photo-aquation of cis-[RuCl2(mPTA)4](CF3SO3)4 in water (mPTA = N-methyl-1,3,5-triaza-7-phosphaadamantane)†

Rugiada Girotti,ab   Antonio Romerosa,*ab   Sonia Mañas,ab   Manuel Serrano-Ruizab  and  Robin Perutzc  

* Corresponding authors

a Área de Química Inorgánica, Facultad de Ciencias, Universidad de Almería, Almería, Almería, Spain

b Organometallic and Photochemistry Laboratory for Sustainable Chemistry, C.I.E.S.O.L., Almería, Spain
E-mail: romerosa@ual.es

c Department of Chemistry, University of York, Heslington, York, U.K.

Abstract

On irradiating the complex cis-[RuCl2(mPTA)4](CF3SO3)4 (2) with near UV light at room temperature, (OC-6-13)-[RuCl2(mPTA)3(H2O)](CF3SO3)3 (3) was obtained. Complex 3 is the product of the substitution in 2 of one mPTA by a H2O molecule and the rearrangement from cis to trans of the two chlorides. The selective photo-reaction of 2 is produced with radiation of 300 < λ < 400 nm or with λ = 367 nm in 50 min (Φ367 nm (D2O) = 0.18 ± 0.01). The reaction is not reversible with visible light. The transformation of 2 into 3 is not dependent on the pH but only on the radiation used. Reaction of 3 with NaCl leads to (OC-6-21)-[RuCl3(mPTA)3](CF3SO3)2 (4) which could be directly obtained by irradiation of 2 with λ = 367 nm in water and 5 eq. of NaCl (Φ367 nm (D2O) = 0.17 ± 0.01). Complex 4 turns slowly to 2 in water with 1 eq. of mPTA under light of λ > 416 nm. Complete conversion of 4 into 2 was achieved after more than one day. All complexes were characterized by elemental analysis, IR and NMR spectroscopy, and 2, 3 and 4 by single crystal X-ray determination. An easy synthesis for the ligand mPTA(CF3SO3) is also reported.

Graphical abstract: Photo-aquation of cis-[RuCl2(mPTA)4](CF3SO3)4 in water (mPTA = N-methyl-1,3,5-triaza-7-phosphaadamantane)

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Article information

DOI
https://doi.org/10.1039/C0DT00885K
Article type
Paper
Submitted
21 Jul 2010
Accepted
18 Oct 2010
First published
06 Dec 2010

Dalton Trans., 2011,40, 828-836

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Photo-aquation of cis-[RuCl2(mPTA)4](CF3SO3)4 in water (mPTA = N-methyl-1,3,5-triaza-7-phosphaadamantane)

R. Girotti, A. Romerosa, S. Mañas, M. Serrano-Ruiz and R. Perutz, Dalton Trans., 2011, 40, 828 DOI: 10.1039/C0DT00885K

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