Cluster Growth Reactions with Selenido‐Carbonyl Clusters − Synthesis, Characterisation and Theoretical Study of the Dimetallic
<i>closo</i>
Clusters [WRu
<sub>3</sub>
(μ
<sub>4</sub>
‐Se)
<sub>2</sub>
(μ‐CO)
<sub>4</sub>
(CO)
<sub>6</sub>
(L)
<sub>2</sub>
] (L = Phosphane) and of the Donor‐Acceptor Adduct [(CO)
<sub>5</sub>
W(μ
<sub>4</sub>
‐Se)Ru
<sub>3</sub>
(μ
<sub>3</sub>
‐Se)(CO)
<sub>7</sub>
{P(CH
<sub>2</sub>
Ph)Ph
<sub>2</sub>
}
<sub>2</sub>
]
作者:Daniele Cauzzi、Claudia Graiff、Roberto Pattacini、Giovanni Predieri、Antonio Tiripicchio、Samia Kahlal、Jean‐Yves Saillard
DOI:10.1002/ejic.200300386
日期:2004.3
AbstractThe open‐triangular, nido clusters of the type [Ru3(μ3‐Se)2(CO)7(L)2] (L = PPh3, PPh2(OMe), PPh2(Me), P(p‐MeO‐C6H4)3] react at room temperature with [W(CO)3(MeCN)3] to give the dimetallic closo clusters [WRu3(μ4‐Se)2(μ‐CO)4(CO)6(L)2]. When L is P(CH2Ph)Ph2 the donor‐acceptor adduct [(CO)5W(μ4‐Se)Ru3(μ3‐Se)(CO)7P(CH2Ph)Ph2}2] is obtained where the nido cluster [Ru3(μ3‐Se)2(CO)7(L)2] interacts with the fragment W(CO)5 through a selenido ligand. DFT calculations, performed on the model species [WRu3(μ4‐Se)2(μ‐CO)4(CO)6(PH3)2] and [(CO)5W(μ4‐Se)Ru3(μ3‐Se)(CO)7(PH3)2], showed that the computed total energy of the latter is 1.1 eV lower than that of the former. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)