The first X-ray structure of a hexaamminecobalt(III) salt with two different complex chlorocadmium anions: synthesis, characterization and crystal structure of [Co(NH₃)₆]₄[CdCl₆][CdCl₄(SCN)(H₂O)]₂Cl₂·2H₂O

Abstract

In the title complex salt, tetrakis[hexaamminecobalt(III)] hexachlorocadmate(II) bis[aquatetrachlorothiocyanatocadmate(II)] dichloride dihydrate, the discrete ions, i.e. [Co(NH3)6]3+, Cl-, [CdCl6]4- (located on an inversion centre) and [CdCl4(SCN)(H2O)]3-, together with cocrystallized water molecules, are assembled by means of a network of hydrogen-bonding interactions. This is the first X-ray structure determination of a hexaamminecobalt(III) salt with two different complex chlorocadmium anions.

Synthesis, Crystal Structure, and Infrared Spectroscopy of a novel hydronium trihydrate hybrid compound: (C6H22N4)2H9O4CdCl6CdCl5Cl2

“…(Table 2), the values of the Cd-Cl bond lengths equal to 2.6441 (9) Å and the Cl-Cd(1)-Cl bond angles average exactly 90.0°, range between 89.06 (3) and 90.94 (3)°. These geometrical parameters, which agree with those found in other compounds [23,24], confirm the close to symmetric octahedral nature of the Cd(1)Cl6 building units [25]. Moreover, for the pentachloridocadmate(II) anion, the structural index τ, namely the Addison parameter τ=(β -α)/60 with α and β being the two largest angles, is zero for an ideal square pyramidal and becomes equal to one for an ideal trigonal bipyramid [26].…”

Bis(1-benzylpiperazine-1,4-diium) hexachloridocadmate(II) dihydrate

“…The Cd II ion is in an octahedral coordination environment composed of six chloride anions as to form an hexachlorocadmate (II) ion. In this kind of anion, the Cd-Cl bond lengths and Cl-Cd-Cl bond angles are generally not equal to one another but vary with the environment around the Cl atoms (Bala et al, 2006). In the title compound, the values of the Cd-Cl bond lengths vary between 2.5528 (5) and 2.7055 (4) Å.…”

“…For meta-chlorido complexes, see: El ; El Glaoui, Kefi et al (2009). For the role of C-HÁ Á ÁCl hydrogen bonds, see: Janiak & Scharmann (2003. For a discussion of Cd-Cl distances and Cl-Cd-Cl bond angles, see: Bala et al (2006).…”

“…where the Cd-Cl distances are between 2.5937 (9) and 2.691 (1) Å and the Cl-Cd-Cl angles ranging from 89.23 3to 95.50 (3)° (Bala et al, 2006). Owing to the obvious differences of Cd-Cl distances and Cl-Cd-Cl angles in (C 11 H 18 N 2 ) 2 CdCl 6 .2H 2 O, the coordination geometry of the Cd atom could be regarded as a slightly distorted octahedron which is in full agreement with the literature data (Bala, et al, 2006).…”

A simple hydrated salt with a complex hydrogen-bonding network: tetrakis(5-amino-3-carboxy-4H-1,2,4-triazol-1-ium) hexachloridocadmate(II) tetrahydrate

“…The Cd II cation is located on an inversion centre and exhibits an octahedral coordination composed of six chloride anions to form a hexachloridocadmate(II) anion. In this type of anion, the Cd-Cl bond lengths and Cl-Cd-Cl bond angles depend on the environment around the Cl atoms (Bala et al, 2006). In (I), the Cd-Cl bond lengths vary between 2.5881 (5) and 2.6517 (5) Å , and the cis-Cl-Cd-Cl angles range from 87.22 (2) to 92.78 (2) ( Table 2).…”