TY - JOUR
T1 - Synthesis and Characterization of Two β-Diketiminato Tin(IV) Compounds
AU - Ma, Xiaoli
AU - Deng, Ziyan
AU - Yao, Miaomiao
AU - Zhong, Mingdong
AU - Li, Wenling
AU - Yang, Zhi
N1 - Publisher Copyright:
© 2017 Chinese Chemical Society & SIOC, CAS.
PY - 2017/5/1
Y1 - 2017/5/1
N2 - The reactions of L1Li [L1=HC(CMeNAr)2, Ar=2,6-iPr2C6H3] with Me2SnCl2, and L2Li [L2=HC(CMeNAr')2, Ar'=2,6-Et2C6H3] with Me3SnCl in a molar ratio of 1:1 were carried out at room temperature and acquired two new compounds, N(Ar)=C(Me)CH=C(NHAr)CH2SnMe2Cl·C7H8 (1) and [N(Ar')C(Me)=CHC(=NAr')CH2SnMe2]2·CH2Cl2 (2), respectively. Different from regular nitrogen-metal-nitrogen bonds generated by the reactions of β-diketiminato ligands with metal halides, uncommon nitrogen-tin-carbon bonds in compounds 1 and 2 were obtained by Sn-N bond cleavage and concomitant Sn-C bond formation due to the Lewis acidity of SnMe3 and SnMe2Cl group. Compound 2 is a rare tin dimer with two resonant structures. Two compounds have been confirmed by 1H NMR,13C NMR, elemental analysis, and single crystal X-ray structural analysis. Through the comparison of compounds 1and 2, the formation mechanism of dimer 2 has been investigated.
AB - The reactions of L1Li [L1=HC(CMeNAr)2, Ar=2,6-iPr2C6H3] with Me2SnCl2, and L2Li [L2=HC(CMeNAr')2, Ar'=2,6-Et2C6H3] with Me3SnCl in a molar ratio of 1:1 were carried out at room temperature and acquired two new compounds, N(Ar)=C(Me)CH=C(NHAr)CH2SnMe2Cl·C7H8 (1) and [N(Ar')C(Me)=CHC(=NAr')CH2SnMe2]2·CH2Cl2 (2), respectively. Different from regular nitrogen-metal-nitrogen bonds generated by the reactions of β-diketiminato ligands with metal halides, uncommon nitrogen-tin-carbon bonds in compounds 1 and 2 were obtained by Sn-N bond cleavage and concomitant Sn-C bond formation due to the Lewis acidity of SnMe3 and SnMe2Cl group. Compound 2 is a rare tin dimer with two resonant structures. Two compounds have been confirmed by 1H NMR,13C NMR, elemental analysis, and single crystal X-ray structural analysis. Through the comparison of compounds 1and 2, the formation mechanism of dimer 2 has been investigated.
KW - Metal halides
KW - Nitrogen-tin-carbon bonds
KW - Tin dimer
KW - β-diketiminato ligands
UR - https://www.scopus.com/pages/publications/85026507805
U2 - 10.6023/cjoc201611035
DO - 10.6023/cjoc201611035
M3 - Article
AN - SCOPUS:85026507805
SN - 0253-2786
VL - 37
SP - 1300
EP - 1305
JO - Chinese Journal of Organic Chemistry
JF - Chinese Journal of Organic Chemistry
IS - 5
ER -