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A common laboratory procedure for the determination of the magnetic moment for a complex is the Gouy method which involves weighing a sample of the complex in the presence and absence of a magnetic field and observing the difference in weight. A template is provided for the calculations involved.
- 24.6: Magnetic Properties of Coordination ... - Chemistry LibreTexts
Magnetic Moments of Molecules and Ions. Experimental...
- 24.6: Magnetic Properties of Coordination ... - Chemistry LibreTexts
In electromagnetism, the magnetic moment or magnetic dipole moment is the combination of strength and orientation of a magnet or other object or system that exerts a magnetic field. The magnetic dipole moment of an object determines the magnitude of torque the object experiences in a given magnetic field.
12 Ιουλ 2023 · Magnetic Moments of Molecules and Ions. Experimental evidence of magnetic measurements supports the theory of high- and low-spin complexes. Remember that molecules such as O 2 that contain unpaired electrons are paramagnetic. Paramagnetic substances are attracted to magnetic fields.
Diamagnetism - magnetic moment of filled shells of atoms. Induced moment opposes applied field. Paramagnetism - unfilled shells have a finite magnetic moment (orbital angular momentum) which aligns along the magnetic field direction.
The complex [FeF 6] 3-is high-spin \(d^5\) and is attracted strongly to magnetic fields; however, \([Fe(CN)_6]^{3-}\) is low-spin \(d^5\) and only has one unpaired electron, making it a weaker magnet. This trend can be explained based on the properties of the ligands.
Magnetic moment has contributions from spin and orbital angular momentum. A non-spherical environment may lead to quenching of the contribution from orbital angular momentum. However, the spin-only magnetic moment survives in all cases and is related to the total number of unpaired electrons. μ = μ = 2√S(S+1) = √n(n+2) eff s.o BM.
The experimental magnetic moment value of a given complex compound can be used to determine the number of unpaired electrons occupying the d-orbitals of the central metal ion of a given complex compound.
