Synthesis and molecular structure of [Re2(μ:η6-C24H18N4)(CO)6] containing the rtct-tetrakis(2-pyridyl)cyclobutandiyl ligand, derived from the reaction of [Re2(CO)8(MeCN)2] and 1,2-bis(2-pyridyl)ethene
摘要:
The reaction of the labile compound [Re-2(CO)(8)(CH3CN)(2)] with trans-1,2-bis(2-pyridyl)ethene (C12H10N2) at room temperature in tetrahydrofuran affords the compounds [Re-2(mu:eta(3)-C12H10N2)(CO)(8)] (1) and the oxidative addition product [Re-2(mu-H)(mu:eta(3)- C12H9N2)(CO)(7)] (2). When the reaction is carried out at temperatures of refluxing tetrahydrofuran, besides compounds 1 and 2, the oxidative addition product [Re-2(mu-H)(mu:eta(4)-C12H9N2)(CO)(6)] (3), the insertion product [Re-2(mu:eta(4)-C12H10N2)(CO)(8)] (4) and [Re-2(mu:eta(6)-C14H18N4)(CO)(6)] (5) are obtained. Compound 5 contains the organic ligand rtct-tetrakis(2-pyridyl)cyclobutandiyl which is derived from a [2 + 2] cycloaddition of 1,2-bis(2-pyridyl)ethene mediated by its coordination to the bimetallic framework. The molecular structures of 1, 2, 4 and 5 were confirmed by X-ray crystallographic studies. (C) 2004 Elsevier B.V. All rights reserved.
Synthesis and molecular structure of [Re2(μ:η6-C24H18N4)(CO)6] containing the rtct-tetrakis(2-pyridyl)cyclobutandiyl ligand, derived from the reaction of [Re2(CO)8(MeCN)2] and 1,2-bis(2-pyridyl)ethene
摘要:
The reaction of the labile compound [Re-2(CO)(8)(CH3CN)(2)] with trans-1,2-bis(2-pyridyl)ethene (C12H10N2) at room temperature in tetrahydrofuran affords the compounds [Re-2(mu:eta(3)-C12H10N2)(CO)(8)] (1) and the oxidative addition product [Re-2(mu-H)(mu:eta(3)- C12H9N2)(CO)(7)] (2). When the reaction is carried out at temperatures of refluxing tetrahydrofuran, besides compounds 1 and 2, the oxidative addition product [Re-2(mu-H)(mu:eta(4)-C12H9N2)(CO)(6)] (3), the insertion product [Re-2(mu:eta(4)-C12H10N2)(CO)(8)] (4) and [Re-2(mu:eta(6)-C14H18N4)(CO)(6)] (5) are obtained. Compound 5 contains the organic ligand rtct-tetrakis(2-pyridyl)cyclobutandiyl which is derived from a [2 + 2] cycloaddition of 1,2-bis(2-pyridyl)ethene mediated by its coordination to the bimetallic framework. The molecular structures of 1, 2, 4 and 5 were confirmed by X-ray crystallographic studies. (C) 2004 Elsevier B.V. All rights reserved.