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Tin(IV) and organotin(IV) complexes containing mono or bidentate N-donor ligands - III. 1-methylimidazole derivatives: synthesis, spectroscopic and structural characterization (Articolo in rivista)
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- Tin(IV) and organotin(IV) complexes containing mono or bidentate N-donor ligands - III. 1-methylimidazole derivatives: synthesis, spectroscopic and structural characterization (Articolo in rivista) (literal)
- Anno
- 1998-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/S0022-328X(97)00606-2 (literal)
- Alternative label
Pettinari, C; Pellei, M; Miliani, M; Cingolani, A; Cassetta, A; Barba, L; Pifferi, A; Rivarola, E (1998)
Tin(IV) and organotin(IV) complexes containing mono or bidentate N-donor ligands - III. 1-methylimidazole derivatives: synthesis, spectroscopic and structural characterization
in Journal of organometallic chemistry (Print); Elsevier Science SA, Lausanne (Svizzera)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Pettinari, C; Pellei, M; Miliani, M; Cingolani, A; Cassetta, A; Barba, L; Pifferi, A; Rivarola, E (literal)
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- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- [ 1 ] Univ Camerino, Dipartimento Sci Chim, I-62032 Camerino, Italy
[ 2 ] CNR, Ist Strutturist Chim G Giacomello, I-30412 Trieste, Italy
[ 3 ] Univ Palermo, Dipartimento Chim Inorgan, I-90123 Palermo, Italy (literal)
- Titolo
- Tin(IV) and organotin(IV) complexes containing mono or bidentate N-donor ligands - III. 1-methylimidazole derivatives: synthesis, spectroscopic and structural characterization (literal)
- Abstract
- A series of adducts of the type [(L-#)(y)RnSnX4-n] . zH(2)O (L-# = 1-methylimidazole, y = 1 or 2, R = Me, Et, Bu-n or Ph, n = 1, 2 or 3, X = Cl, Br or I, z = 0, 1/2 or 1) has been characterized in the solid state and in solution by analyses, spectral (IR, Sn-119 Mossbauer, and H-1, C-13 and Sn-119 NMR) data and conductivity measurements. The molecular weight determinations and the NMR data indicate that these organotin(IV) complexes partly dissociate in chloroform and acetone solution. The donor L-# interacts with [(CH3)(3)SnNO3], yielding the 2:1 ionic complex [(L-#)(2)(CH3)(3)Sn]NO3. The derivative [(L-#)(2)(CH3)(2)SnCl2] reacts with NaClO4, AgNO3, NaBPh4 and KSCN in ethanol and diethyl ether giving the complexes [(L-#)(2)(CH3)(2)Sn(ClO4)(2)], [(L-#)(CH3)(2)Sn(NO3)(2)(H2O)], [(L-#)(CH3)(2)SnCl(H2O)(2)]BPh4 and [(L-#)(2)(CH3)(2)Sn(NCS)(2)], respectively, whereas when [(L-#)(CH3)(3)SnCl] interacts with an equimolar quantity of NaClO4, [(L-#)(2)(CH3)(3)Sn]ClO4 . 1/2H(2)O and (CH3)(3)Sn(ClO4) in 1:1 ratio are obtained. The stability towards self-decomposition of the complexes obtained decreases with increasing number of the Sn-bonded aryl or alkyl groups. The derivative [(L-#)(2)(CH3)(2)SnBr2] reacts with 1,10-phenanthroline (Phen), yielding immediately the complex [(Phen)(CH3)(2)SnBr2], whereas from the reaction between [(L-#)(2)(CH3)(2)Sn(ClO4)(2)] and Phen, the mixed ligand complex [(L-#)(Phen)(CH3)(2)Sn](ClO4)(2) is obtained. A different behaviour has been shown from the diiodide complex [(L-#)(2)(C2H5)(2)SnI2] which reacts with Phen, yielding the compound with the 3:2 stoichiometry [(Phen)(3){(C2H5)(2)SnI2}(2)]. Both the crystal structures of [(L-#)(2)(CH3)(2)SnBr2] and [(L-#)(2)(C2H5)(2)SnI2] show the tin atom in an all-trans octahedral regular configuration, whereas in [(L-#)(C6H5)(3)SnCl] the tin atom exhibits a distorted trigonal bipyramidal geometry, with the phenyl groups in the equatorial positions. A comparison was made with structural data of other R3SnXN-type derivatives. The molecular parameters of 1-methylimidazole in the tin(IV) complexes were used, together with other structural data in literature, to derive empirical rules concerning the imidazole donor. (C) 1998 Elsevier Science S.A. (literal)
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