Instead of Br<sub>2</sub> and Cl<sub>2</sub>,NBS and NCS are applicable tothe thiocyanation of o-nitroaniline and carbendazim.The resultsshow that NBS and NCS a
The complexes of meso-tetrasubstituted phenylporphyrinwith Yttrium acetylacetonate were prepared by reaction ofY(acac)33H<sub>2</sub>O with H<sub>2</sub>(g)Tpp and