Synthesis and structural characterization of [NEt4][Fe3(μ3-O)(μ3-AUPPh3)(μ-CO)3(CO)6], the new [Au6(μ3-S)2(PPh3)6][Fe3(μ3-S)(μ-AuPPh3)(CO)9]2 and [Au6(μ-S)2(PPh3)6][Fe5(μ3-S)2(CO)14] ionic solids containing assemblages of cluster-cations and cluster-anions

被引:26
作者
Albano, VG
Castellari, C
Femoni, C
Iapalucci, MC
Longoni, G
Monari, M
Rauccio, M
Zacchini, S
机构
[1] Dipartimento Chim Fis & Inorgan, I-40136 Bologna, Italy
[2] Dipartimento Chim G Ciamician, I-40126 Bologna, Italy
关键词
crystal structures; iron complexes; gold complexes; cluster complexes;
D O I
10.1016/S0020-1693(99)00134-6
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The new [Fe-3(mu(3)-O)(mu(3)-AuPPh3)(mu-CO)(3)(CO)(6)](-) and [Fe-3(mu(3)-S)(mu-AuPPh3)(CO)(9)](-) monoanionic congeners have been obtained by reacting the [Fe-3(mu(3)-E)(CO)(9)](2-) (E = O, S) dianions with one equivalent of Au(PPh3)Cl. The gold adduct of the oxygen derivative has been crystallized as tetraethylammonium and trimethylbenzylammonium salt either from THF and n-hexane or acetone and isopropyl alcohol, and structurally characterized in its tetraethylammonium salt (monoclinic, C2/c (No. 15), a = 15.859(2). b = 12.859(2), c = 40.217(8) Angstrom, beta = 96.41(1)degrees Z = 8). The [Fe-3(mu(3)-S)(mu-AuPPh3)(CO)(9)](-) gold adduct, in contrast, partially reverts to the parent dianion upon crystallization under the above experimental conditions, and could be precipitated only as the [Au-6(mu(3)-S)(2)(PPh3)(6)][Fe-3(mu(3)-S)(mu-AuPPh3)(CO)(9)](2) salt (triclinic, P (1) over bar (No. 2), a = 18.998(8), b = 19.933(8), c = 22.94(1) Angstrom, alpha = 99.91(4), beta = 98.91(4), gamma = 107.42(3)degrees Z = 2), by addition of an equivalent of the [Au-3(mu(3)-S)(PPh3)(3)](+) sulfonium cation to the reaction mixture. The [Fe-5(mu(3)-S)(2)(CO)(14)](2-) dianion does not form a gold adduct even in the presence of the sulfonium cation and only the corresponding [Au-6(mu(3)-S)(2)(PPh3)(6)][Fe-5(mu(3)-S)(2)(CO)(14)] salt could be obtained. The [Fe-3(mu(3)-O)(mu(3)-AuPPh3)(mu-CO)(3)(CO)(6)](-) and [Fe-3(mu(3)-S)(mu-AuPPh3)(CO)(9)](-) gold adducts are not isostructural and the possible factors leading to their structural diversities are discussed. The [Au-6(mu(3)-S)(2)(PPh3)(6)][Fe-3(mu(3)-S)(mu-AuPPh3)(CO)(9)](2) and [Au-6(mu(3)-S)(2)(PPh3)(6)][Fe-5(mu(3)-S)(2)(CO)(14)] salts represent further examples of ionic solids assembled from cluster-cations and cluster-anions. (C) 1999 Elsevier Science S.A. All rights reserved.
引用
收藏
页码:372 / 379
页数:8
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