Symmetry Lab › D4h › trans-Tetraamminedichlorocobalt(III) (N atoms shown)
trans-[CoCl₂(NH₃)₄]⁺ trans-Tetraamminedichlorocobalt(III) (N atoms shown)
Octahedral, trans · point group D4h · order 16
- Point group
- D4h — A C4 principal axis, 4 perpendicular C2 axes and a horizontal mirror plane; these also give 4 vertical planes and a centre of inversion.
- Order
- 16
- Operations
- E, 2C₄, C₂, 2C₂′, 2C₂″, i, 2S₄, σh, 2σᵥ, 2σd
- Shape
- Octahedral, trans
- Atoms
- 7 (Co, Cl × 2, N × 4)
Symmetry elements of trans-[CoCl₂(NH₃)₄]⁺
- C₄ — along Cl–Co–Cl
- C₂′ (x) — along N–Co–N
- C₂′ (y) — along the other N–Co–N
- C₂″ (1) — in the CoN₄ plane, between N atoms
- C₂″ (2) — in the CoN₄ plane, between N atoms
- i — centre of inversion
- σh — the CoN₄ plane
- σᵥ (xz) — contains Cl–Co–Cl and two N
- σᵥ (yz) — contains Cl–Co–Cl and the other two N
- σd (1) — contains Cl–Co–Cl, between N atoms
- σd (2) — contains Cl–Co–Cl, between N atoms
- S₄ — rotate 90°, then reflect
Structure
- Co–Cl 2.25 Å, Co–N 1.96 Å
- Cl–Co–Cl 180°
- The green "praseo" isomer
![trans-Tetraamminedichlorocobalt(III) (N atoms shown) (trans-[CoCl2(NH3)4]+) — D4h symmetry elements](/molecular-symmetry/infographics/trans-CoCl2NH34+_transTetraamminedichlorocobaltIIINatomsshown_D4h.png)
Other D4h molecules
[Pt(NH₃)₄]²⁺ (N atoms shown)Tetraammineplatinum(II) ion[AuCl₄]⁻Tetrachloroaurate(III) ion[ICl₄]⁻Tetrachloroiodate(III) ion[PdCl₄]²⁻Tetrachloropalladate(II) ion[PtCl₄]²⁻Tetrachloroplatinate(II) ion[BrF₄]⁻Tetrafluorobromate(III) ionXeF₄Xenon tetrafluorideC₄H₄²⁻Cyclobutadiene dianion (planar)[Ni(CN)₄]²⁻Tetracyanonickelate(II) ion[Pt(CN)₄]²⁻Tetracyanoplatinate(II) ion[Re₂Cl₈]²⁻Octachlorodirhenate(III) iontrans-[OsCl₂(CO)₄]trans-Dichlorotetracarbonylosmium(II)