Ligands that produce a large splitting are called strong field ligands, and those that produce a small splitting are called weak field ligands. An abbreviated spectrochemical series is: Weak field I - < Br - < Cl - < NO 3- < F - < OH - < H 2 O < Pyridine < NH 3 < NO 2- < CN - < CO Strong field.

Sep 2, 2015 · When a metal ion having higher charge is interacting with ligand NH3 it acts as a SFL. When the metal ion has lower charge it acts as WFL. EG: $\ce{Co^2+}$ and $\ce{Co^3+}$ In $\ce{Co^2+}$ $\ce{NH3}$ acts as WFL.

Spectrochemical series gives the arrangement of ligands in the increasing order of crystal field splitting. Weak field ligands cause less crystal field splitting. They form high spin complexes. Examples include chloride ions, fluoride ions etc. Strong field ligands cause greater crystal field splitting. They form low spin complexes.

A spectrochemical series is a list of ligands ordered by ligand "strength", and a list of metal ions based on oxidation number, group and element.

A spectrochemical series is the arrangement of common ligands in the increasing order of their crystal-field splitting energy (CFSE) values. The ligands present on the R.H.S of the series are strong field ligands while that on the L.H.S are weak field ligands.

May 5, 2017 · Now, we know HX2O H X 2 O comes later in the spectrochemical series, thus it should be considered a weak field ligand. But for CoX3+ C o X 3 +, HX2O H X 2 O acts as a strong field ligand and pairs up the electron causing the hybridization to …

Weak field ligands: Those ligands which cause lower splitting of d orbitals i.e., ∆ ° parameter is smaller compared to the energy required for the pairing of electrons are called weak field ligands. Weak field ligands contain halogen, O, and S as donor atoms. e.g. F – , Cl – , Br – , I –, SCN –, C O C 2 O 4 2 -. Theories of Bonding in Complexes.

Nov 5, 2018 · Whether F- "behaves" as a strong- or weak-field ligand in these complexes has nothing to do with fluoride itself, because fluoride is a constant factor in all of these examples. It's not some magical property of fluoride that's being turned on …

Are there any factors that make something a stronger field ligand? Solution. The d orbitals that rise in energy in the presence of a ligand can be thought of as forming an antibonding molecular orbital combination with an orbital on the ligand. In addition, there would also be a bonding combination for this interaction.

1,ethylene diamine a strong field ligand as it has two group which is attached to the central atom. it form a "C" clamp looking structureSee the structure of EDTA(ethylene diamine)