Synthesis and Characterization of Bis(guanidinate) Zirconium Complexes

Autor: Yong Zhang, Junfeng Wang, Xing'an Pang, Qi Shen, Yingming Yao, Hongting Sheng
Rok vydání: 2005
Předmět:
Zdroj: Chinese Journal of Chemistry. 23:1193-1197
ISSN: 1614-7065
1001-604X
DOI: 10.1002/cjoc.200591193
Popis: Addition of one equivalent of LiN(i-Pr)2 or LiN(CH2)5 to carbodiimides, RNCNR [R=cyclohexyl (Cy), isopropyl (i-Pr)], generated the corresponding lithium of tetrasubstituted guanidinates {Li[RNC(N R2′)NR](THF)}2 [R=i-Pr, N R2′=N(i-Pr)2 (1), N(CH2)5 (2); R=Cy, N R2′=N(i-Pr) 2 (3), N(CH2)5 (4)]. Treatment of ZrCl4 with freshly prepared solutions of their lithium guanidinates provided a series of bis(guanidinate) complexes of Zr with the general formula Zr[RNC(N R2′)NR]2Cl2 [R=i-Pr, NR2′=N(i-Pr) 2 (5), N(CH2)5 (6); R=Cy, N R2′=N(i-Pr)2 (7), N(CH2)5 (8)]. Complexes 1, 2, 5–8 were characterized by elemental analysis, IR and 1H NMR spectra. The molecular structures of complexes 1, 7 and 8 were further determined by X-ray diffraction studies.
Databáze: OpenAIRE
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