The reaction of [Pt15(CO)30]2- with increasing amounts of SnCl2 affords [Pt8(CO)10(SnCl2)4]2- (2), [Pt10(CO)14{Cl2Sn(OH)SnCl2}2]2- (5), [Pt6(CO)6(SnCl2)2(SnCl3)4]4- (3), [Pt9(CO)8(SnCl2)3(SnCl3)2(Cl2SnOCOSnCl2)]4- (4) and [Pt5(CO)5{Cl2Sn(OR)SnCl2}3]3- (R = H, Me, Et, and iPr) (1-R). 1-R and 2 have been previously described, whereas 3-5 are herein reported for the first time. The species 1-3 are the main products of the reaction under different experimental conditions, whereas 4 and 5 are by-products of the synthesis of 3 and 2, respectively. From a structural point of view, the clusters 1-5 all show a perfect segregation of the two metals, which are composed of a low valent Pt core decorated on the surface by Sn(ii) fragments such as SnCl2, [SnCl3]-, [Cl2Sn(OH)SnCl2]- and [Cl2SnOCOSnCl2]2-. These fragments behave as two electron donor ligands via each Sn-atom (and also the C-atom in the case of [Cl2SnOCOSnCl2]2-). The [Cl2SnOCOSnCl2]2- ligand is rather unique and may be viewed as a bis-stannyl-carboxylate, a carbon dioxide μ3:k3-C,O,O′-CO2 or a carbonite ion [CO2]2- stabilized by coordination to metal atoms. Compounds 1-5 have been fully characterised via IR spectroscopy, X-ray crystallography and DFT calculations.

Bortoluzzi, M., Ceriotti, A., Ciabatti, I., DELLA PERGOLA, R., Femoni, C., Carmela Iapalucci, M., et al. (2016). Platinum carbonyl clusters stabilized by Sn(II)-based fragments: Syntheses and structures of [Pt6(CO)6(SnCl2)2(SnCl3)4]4-, [Pt9(CO)8(SnCl2)3(SnCl3)2(Cl2SnOCOSnCl2)]4- and [Pt10(CO)14{Cl2Sn(OH)SnCl2}2]2-. DALTON TRANSACTIONS, 45(12), 5001-5013 [10.1039/c5dt04696c].

Platinum carbonyl clusters stabilized by Sn(II)-based fragments: Syntheses and structures of [Pt6(CO)6(SnCl2)2(SnCl3)4]4-, [Pt9(CO)8(SnCl2)3(SnCl3)2(Cl2SnOCOSnCl2)]4- and [Pt10(CO)14{Cl2Sn(OH)SnCl2}2]2-

DELLA PERGOLA, ROBERTO;
2016

Abstract

The reaction of [Pt15(CO)30]2- with increasing amounts of SnCl2 affords [Pt8(CO)10(SnCl2)4]2- (2), [Pt10(CO)14{Cl2Sn(OH)SnCl2}2]2- (5), [Pt6(CO)6(SnCl2)2(SnCl3)4]4- (3), [Pt9(CO)8(SnCl2)3(SnCl3)2(Cl2SnOCOSnCl2)]4- (4) and [Pt5(CO)5{Cl2Sn(OR)SnCl2}3]3- (R = H, Me, Et, and iPr) (1-R). 1-R and 2 have been previously described, whereas 3-5 are herein reported for the first time. The species 1-3 are the main products of the reaction under different experimental conditions, whereas 4 and 5 are by-products of the synthesis of 3 and 2, respectively. From a structural point of view, the clusters 1-5 all show a perfect segregation of the two metals, which are composed of a low valent Pt core decorated on the surface by Sn(ii) fragments such as SnCl2, [SnCl3]-, [Cl2Sn(OH)SnCl2]- and [Cl2SnOCOSnCl2]2-. These fragments behave as two electron donor ligands via each Sn-atom (and also the C-atom in the case of [Cl2SnOCOSnCl2]2-). The [Cl2SnOCOSnCl2]2- ligand is rather unique and may be viewed as a bis-stannyl-carboxylate, a carbon dioxide μ3:k3-C,O,O′-CO2 or a carbonite ion [CO2]2- stabilized by coordination to metal atoms. Compounds 1-5 have been fully characterised via IR spectroscopy, X-ray crystallography and DFT calculations.
Articolo in rivista - Articolo scientifico
platinum; tin; heterometallic clusters; transition metal
English
2016
45
12
5001
5013
none
Bortoluzzi, M., Ceriotti, A., Ciabatti, I., DELLA PERGOLA, R., Femoni, C., Carmela Iapalucci, M., et al. (2016). Platinum carbonyl clusters stabilized by Sn(II)-based fragments: Syntheses and structures of [Pt6(CO)6(SnCl2)2(SnCl3)4]4-, [Pt9(CO)8(SnCl2)3(SnCl3)2(Cl2SnOCOSnCl2)]4- and [Pt10(CO)14{Cl2Sn(OH)SnCl2}2]2-. DALTON TRANSACTIONS, 45(12), 5001-5013 [10.1039/c5dt04696c].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/101878
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