in not given
SnCl4 in CCl4, CH2Cl2 or petroleum ether was added dropwise into a soln. of ligand in the same solvent at -20 to -5°C and in the molar ratio (acid:base) 1:1.5; ppt. was filtered cold, washed, dried; elem.anal.;
参考文献
Narula, Suraj P.; Kapur, Neeta; Sharma, Ramesh K.
Inorganica Chimica Acta, 1984 , vol. 85, p. 37 - 40