Synthesis and spectroscopic properties of geminal-bis(tert-butylamino)cyclotriphosphazenes obtained by the reaction of Spiro and ansa phenoxycyclotriphosphazenes with the tert-butylamine and the crystal structure of 4,4?-bis(tert-butylamino)-2,6?,6?,10-tetrachloro-4?,4?,6?,6?-tetrahydrospyro[12H-dibenzo[d,g]- (1,3,2]dioxaphosphocin-6,2??5-[1,3,5,2,4,6]-triazaphosphorine] için istatistikler