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The Syntheses and Structures of Ph 4 EN 3 (E = P, As, Sb), an Example for the Transition from Ionic to Covalent Azides within the Same Main Group
Author(s) -
Haiges Ralf,
Schroer Thorsten,
Yousufuddin Muhammed,
Christe Karl O.
Publication year - 2005
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200500289
Subject(s) - triclinic crystal system , chemistry , covalent bond , monoclinic crystal system , ionic bonding , crystallography , azide , aqueous solution , group (periodic table) , crystal structure , inorganic chemistry , ion , organic chemistry
The compounds Ph 4 EN 3 (E = P, As, Sb) were prepared from the corresponding halides by ion exchange in aqueous solution. [Ph 4 P]N 3 crystallizes in the triclinic space group $P{\bar 1}$ , while [Ph 4 As]N 3 ·H 2 O and Ph 4 SbN 3 crystallize in the monoclinic space group P 2 1 / n . In contrast to ionic [Ph 4 P] + [N 3 ] − and [Ph 4 As] + [N 3 ] − , the antimony atom in Ph 4 SbN 3 is pentacoordinated and contains a covalently bound azide ligand. This family of compounds serves as an example for the transition from ionic to covalent azides with increasing size of the central atom within the same group of the periodic table.