Awaleh Mohamed Osman, Baril-Robert François, Reber Christian, Badia Antonella, Brosse François
Institut des Sciences de la Terre, Centre d'Etudes et de Recherches Scientifiques de Djibouti (CERD), B.P. 486, Djibouti, Republic of Djibouti.
Inorg Chem. 2008 Apr 21;47(8):2964-74. doi: 10.1021/ic701275k.
A series of discrete compounds and supramolecular polymers were synthesized by self-assembly of dithioether building blocks and HAuCl4.3H2O. In complexes 1 {[AuL(1-Me)Cl], where L(1-Me) is bis(methylthio)methane} and 2 {[Au2L(2-Ph)Cl2], where L(2-Ph) is 1,2-bis(phenylthio)ethane}, adjacent units are connected via aurophilic interactions. Complex 1, a one-dimensional (1D) supramolecular polymer, and complex 2, a two-dimensional supramolecular network, both feature nearly linear Au-Au- chains. Complexes 4a, 4b, and 4c, all of which contain 1,3-bis(phenylthio)propane (L(3-Ph)), are polymorphs having the composition [Au2L(3-Ph)Cl2]. Complex 3 {[Au2L(1-Ph)Cl2], where L(1-Ph) is bis(phenylthio)methane}and complexes 4a and 4b consist of nearly identical 1D supramolecular polymers formed through Au-Au interactions. The third polymorph, 4c, is a molecular complex, as it does not have metal-metal interactions. Complex 5 {[Au2L(4-Ph)Cl2], where L(4-Ph) is 1,4-bis(phenylthio)butane} is also molecular. UV-vis spectra showed that the absorption bands of these complexes are allowed ligand-centered transitions between 230 and 260 nm. Complexes 1, 2, and 6 {[AuL(3-Me)Cl], where L(3-Me) is 1,3-bis(methylthio)propane} exhibited solid-state luminescence at 5 K with vibronic progressions and band maxima at approximately 570 nm. It is suggested that complex 6 contains Au-Au- chains.
通过二硫醚结构单元与 HAuCl₄·3H₂O 的自组装合成了一系列离散化合物和超分子聚合物。在配合物 1 {[AuL(1-Me)Cl]，其中 L(1-Me) 是双(甲硫基)甲烷} 和 2 {[Au₂L(2-Ph)Cl₂]，其中 L(2-Ph) 是 1,2-双(苯硫基)乙烷} 中，相邻单元通过亲金相互作用相连。配合物 1，一种一维(1D)超分子聚合物，和配合物 2，一种二维超分子网络，都具有近乎线性的 Au-Au- 链。配合物 4a、4b 和 4c，均含有 1,3-双(苯硫基)丙烷 (L(3-Ph))，是具有 [Au₂L(3-Ph)Cl₂] 组成的多晶型物。配合物 3 {[Au₂L(1-Ph)Cl₂]，其中 L(1-Ph) 是双(苯硫基)甲烷} 以及配合物 4a 和 4b 由通过 Au-Au 相互作用形成的近乎相同的 1D 超分子聚合物组成。第三种多晶型物 4c 是一种分子配合物，因为它没有金属-金属相互作用。配合物 5 {[Au₂L(4-Ph)Cl₂]，其中 L(4-Ph) 是 1,4-双(苯硫基)丁烷} 也是分子型的。紫外可见光谱表明这些配合物的吸收带是在 230 至 260 nm 之间允许的以配体为中心的跃迁。配合物 1、2 和 6 {[AuL(3-Me)Cl]，其中 L(3-Me) 是 1,3-双(甲硫基)丙烷} 在 5 K 时表现出固态发光，具有振动进展且带最大值约在 570 nm 处。据推测配合物 6 含有 Au-Au- 链。
