Open Question
How many geometric isomers are possible for the complex [CrF3Br3]3?
24. Transition Metals and Coordination Compounds
Isomerism in Coordination Complexes
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How many stereoisomers are possible for Ni(NH3)2Br2?
A
0
B
2
C
4
D
6
Verified step by step guidance1
Identify the coordination number of the complex Ni(NH3)2Br2. Nickel (Ni) typically forms complexes with a coordination number of 4 when it is in a square planar or tetrahedral geometry.
Determine the geometry of the complex. For Ni(II) complexes, a coordination number of 4 can lead to either square planar or tetrahedral geometry. However, Ni(II) with ligands like NH3 and Br- is more likely to form a square planar complex.
Consider the possible arrangements of the ligands around the central metal ion in a square planar geometry. In a square planar complex, the ligands can be arranged in different ways leading to different stereoisomers.
Analyze the possible stereoisomers. In a square planar complex, the ligands can be arranged such that there are cis and trans isomers. Cis isomers have similar ligands adjacent to each other, while trans isomers have them opposite each other.
Count the number of distinct stereoisomers. For Ni(NH3)2Br2 in a square planar geometry, there are two possible stereoisomers: one cis and one trans.
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