Organoantimony(V) Oxido Cubane Cluster [(<i>p</i>-X-C<sub>6</sub>H<sub>4</sub>Sb)<sub>4</sub>(O)<sub>4</sub>(Ph<sub>2</sub>SiO<sub>2</sub>)<sub>4</sub>] (X = Cl, Br) Stabilized by Diphenyldisiloxides
M. Santhana Raj Prabhu
Ananda Kumar Jami
Viswanathan Baskar
10.1021/om900244t.s002
https://acs.figshare.com/articles/dataset/Organoantimony_V_Oxido_Cubane_Cluster_i_p_i_X_C_sub_6_sub_H_sub_4_sub_Sb_sub_4_sub_O_sub_4_sub_Ph_sub_2_sub_SiO_sub_2_sub_sub_4_sub_X_Cl_Br_Stabilized_by_Diphenyldisiloxides/2844241
Reaction of (p-halophenyl)stibonic acid with diphenylsilanediol (in ratio 1:1) in refluxing toluene for 6 h afforded colorless crystalline products in high yields. Single-crystal X-ray structural elucidation reveals the formation of the products [(p-Cl-C<sub>6</sub>H<sub>4</sub>Sb)<sub>4</sub>(O)<sub>4</sub>(Ph<sub>2</sub>SiO<sub>2</sub>)<sub>4</sub>] (<b>1</b>) and [(p-Br-C<sub>6</sub>H<sub>4</sub>Sb)<sub>4</sub>(O)<sub>4</sub>(Ph<sub>2</sub>SiO<sub>2</sub>)<sub>4</sub>] (<b>2</b>), respectively. The clusters <b>1</b> and <b>2</b> were isostructural; the core consists of a distorted Sb<sub>4</sub>O<sub>4</sub> cubane framework with the siloxides acting as bridging ligands across the antimony atoms present at alternate corners of the cube.
2009-07-13 00:00:00
clusters 1
refluxing toluene
6H
6 h
antimony atoms
Sb 4O cubane framework