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For the complexion [Cu(NH3)6]2+,the coordinat ion geometry will be:
  • a)
    Octahedral
  • b)
    Trigonal Prismatic
  • c)
    Tetragonally distorted octahedral
  • d)
    Trigonal Ant iprismatic 
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
For the complexion [Cu(NH3)6]2+,the coordinat ion geometry will be:a)O...
Having 6 ligands it must have octahedral structure but due to d9 electronic configuration ( unsymmetrically filled eg orbitals ( 3 electrons) ) it exhibits John teller distortion and thus have a tetragonally distorted octahedral structure.
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For the complexion [Cu(NH3)6]2+,the coordinat ion geometry will be:a)O...
Coordination Geometry of [Cu(NH3)6]2

The [Cu(NH3)6]2 complex ion is a coordination compound that has a copper ion at the center and six ammonia molecules surrounding it. The coordination geometry of this complex ion can be determined by examining the arrangement of the ligands around the central copper ion.

Tetragonally Distorted Octahedral Geometry

The coordination geometry of [Cu(NH3)6]2 is tetragonally distorted octahedral. This means that the complex ion has an octahedral arrangement of ligands around the central copper ion, but the octahedron is distorted in such a way that it is no longer a perfect octahedron.

The distortion arises because the six nitrogen atoms of the ammonia ligands are not all at the same distance from the copper ion. Instead, the four nitrogen atoms in the equatorial plane of the octahedron are closer to the copper ion than the two nitrogen atoms in the axial positions. This results in a slight elongation of the octahedron along the axis of the two axial ligands.

Conclusion

In conclusion, the coordination geometry of [Cu(NH3)6]2 is tetragonally distorted octahedral. This geometry is common for copper(II) complexes with six ammonia ligands, and arises because of the difference in distance between the equatorial and axial ligands.
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For the complexion [Cu(NH3)6]2+,the coordinat ion geometry will be:a)Octahedralb)Trigonal Prismaticc)Tetragonally distorted octahedrald)Trigonal Ant iprismaticCorrect answer is option 'C'. Can you explain this answer?
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