10.1021/ja049462t.s003 Hongping Zhu Hongping Zhu Jianfang Chai Jianfang Chai Qingjun Ma Qingjun Ma Vojtech Jancik Vojtech Jancik Herbert W. Roesky Herbert W. Roesky Hongjun Fan Hongjun Fan Regine Herbst-Irmer Regine Herbst-Irmer A Seven-Membered Aluminum Sulfur Allenyl Heterocycle Arising from the Conversion of an Aluminacyclopropene with CS<sub>2</sub> American Chemical Society 2004 SC HC CS 2 LAl compound NMR SiMe 3 2004-08-25 00:00:00 Dataset https://acs.figshare.com/articles/dataset/A_Seven_Membered_Aluminum_Sulfur_Allenyl_Heterocycle_Arising_from_the_Conversion_of_an_Aluminacyclopropene_with_CS_sub_2_sub_/3327388 The reaction of an aluminacyclopropene LAl[η<sup>2</sup>-C<sub>2</sub>(SiMe<sub>3</sub>)<sub>2</sub>] (<b>1</b>, L = HC(CMeNAr)<sub>2</sub>, Ar = 2,6-<i>i</i>Pr<sub>2</sub>C<sub>6</sub>H<sub>3</sub>) with CS<sub>2</sub> in the temperature range from −78 °C to room temperature affords the first seven-membered aluminum sulfur-containing heterocyclic compound [LAl]<sub>2</sub>(μ-S)[η<sup>2</sup>-SC(SiMe<sub>3</sub>)CC(SiMe<sub>3</sub>)] (<b>2</b>) bearing an allenyl group. The structural characterization of <b>2 </b>and the analogous compound LAl[OC(O)C<sub>2</sub>(SiMe<sub>3</sub>)<sub>2</sub>] (<b>3</b>) of the proposed intermediate <b>A</b> and the variable-temperature <sup>1</sup>H NMR kinetic study of this reaction may give a better understanding on this unusual conversion.