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3D lab · Coordination compounds

Geometrical Isomers of Complexes in 3D (cis/trans, fac/mer)

Rotate octahedral and square-planar complexes in 3D to tell cis from trans and fac from mer, with bond angles and polarity.

Last updated: 26 October 2026

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Rotate octahedral and square-planar complexes in 3D to tell cis from trans and fac from mer, with bond angles and polarity.

Green ligands are B. Rotate the complex: in cis they are 90° apart, in trans 180°; in fac they share one face, in mer one pair is opposite.

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Geometrical Isomers of Complexes in 3D (cis/trans, fac/mer)

Coordination compounds

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What's happening? Green ligands are B. Rotate the complex: in cis they are 90° apart, in trans 180°; in fac they share one face, in mer one pair is opposite.
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FAQs

Frequently asked questions

How many geometrical isomers does [Co(NH₃)₄Cl₂]⁺ have?

Two: cis and trans.

Is cisplatin cis or trans?

cis-[Pt(NH₃)₂Cl₂]; the two Cl are 90° apart. Only the cis isomer is an anticancer drug.

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