Premium
Structural Characterization of trans‐[Cr(NH 3 ) 4 (H 2 O)Cl]Cl 2 and trans‐[Cr(NH 3 ) 4 Cl 2 ]l
Author(s) -
Brenčič J. V.,
Leban I.,
Zule J.
Publication year - 1985
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.19855210223
Subject(s) - monoclinic crystal system , octahedron , chemistry , crystallography , crystal structure , molecule , hydrogen bond , ion , stereochemistry , organic chemistry
Trans‐[Cr(NH 3 ) 4 (H 2 O)Cl]Cl 2 (A) crystallizes in the monoclinic space group P2 1 /m (No. 11) with a = 6.556(1), b = 10.630(5), c = 6.729(2) Å and β = 96.15(3)°. Trans‐[Cr(NH 3 ) 4 Cl 2 ]I (B) has monoclinic C2/m (No. 12) space group and a = 9.877(2), b = 8.497(2), c = 6.047(2) Å and β = 108.98(2)°. Both unit cells contain two formula units. CrCl, CrO(H 2 O) and three independent CrN(NH 3 ) distances for A are 2.98(1), 2.023(2), 2.067(2), 2.086(3) and 2.064(3) °. CrCl and CrN(NH 3 ) bonds in B are 2.325(1) and 2.071(2) °. All octahedral angles are close to 90 and 180°. Both structures were refined to very low R values. Water molecule from trans‐[Cr(NH 3 ) 4 (H 2 O)Cl] 2+ is hydrogen bonded to both ionic chlorides. Cation and two anions form the motive which repeats itself in the crystal. Cations and anions of the second structure are distributed in layers. Each cation and anion have coordination number eight.