Synonyms: Tin,dichloro[5,10,15,20-tetraphenyl-21H,23H-porphinato(2-)-N21,N22,N23,N24]-,(OC-6-12)-; Tin, dichloro[5,10,15,20-tetraphenylporphinato(2-)]- (8CI);21H,23H-Porphine, 5,10,15,20-tetraphenyl-, tin complex; 21H,23H-Porphine, tinderiv.; Dichloro(5,10,15,20-tetraphenylporphyrinato)tin(IV);Dichloro(tetraphenylporphyrinato)tin; Tin tetraphenylporphyrin dichloride; a,b,g,d-Tetraphenylporphinatodichlorotin(IV)