Project #76175 - Chem Discussion

Respond to these classmates discussion posts. You may use examples or just add to what they have said. (About a paragraph). For each separate post please provide the source that you used. (You may include pictures in the posts as well - please provide a source for pics as well.)

Classmate 1:

A complex ion is an ion that has a metal in the middle and molecules and ions surrounding it. In a lot of cases these molecules or ions are attached to the central metal ion by a co-ordinate bond. The ligands are the molecules that are attached to the central metal ion. Ligands can be many things such as ammonia, chloride, and water. One of the coolest examples of a complex ion with ligands is vitamin B12. Cobalt acts as the complex ion with 4 N- ions on corrin rings, the N- ion on a different ring, and the sixth can bond with any of the things listed as R below. The picture below is just of the coordination compound in vitamin B12 because the molecule is actually very big and would be mask the fact that I just wanted to point out the complex ion and its ligands.

Reference: Coordination compound | chemistry. (n.d.). Retrieved July 11, 2015, from http://www.britannica.com/science/coordination-compound

Cobalamin 1. (n.d.). Retrieved July 11, 2015, from http://chemwiki.ucdavis.edu/Biological_Chemistry/Vitamins,_Cofactors_and_Coenzymes/Cobalamin/Cobalamin_1 

Classmate 2:

According to our textbook a Complex ion is an ion formed from a metal ion with a Lewis base attached to it by a coordinate covalent bond.  A complex ion has a metal ion at its center with a number of molecules or ions surrounding it called Ligands.  Some simple Ligands are water, ammonia, and chloride ions.  These 3 ions have active lone pairs of electrons in the outer energy level that are used to form co-ordinate bonds with the metal ion.  All Ligands are lone pair donors which mean that they are Lewis Bases.  Below are 2 example of Complex Ions and Ligands that surround them. 

 

References:
An Introduction to Complex Metal Ions. (n.d.) Retrieved on July 8, 2015 from http://www.chemguide.co.uk/inorganic/complexions/whatis.html
 
Ebbing, D., & Gammon, S. (2013). Solubility and Complex-Ion Equilibria. In General chemistry:(10th ed., p. 724). Belmont, CA.: Brooks/Cole, Cengage Learning.   
 
The Shapes of Complex Metal Ions.  (n.d.) Retrieved on July 8, 2015 from http://www.chemguide.co.uk/inorganic/complexions/shapes.html
 
Classmate 3:

A complex ion consists of a metal ion at the center with other molecules or ions surrounding it, and considered to be attached by dative covalent bonds, or other bonds for more complicated bonding. These ions or molecules that surround the central metallic ion are known as ligands; simple ligands include water, ammonia and chloride ions. All ligands are lone pair donors, so they function as Lewis bases. 

 
This example shows copper being the complex ion, and all of the Chloride ions surrounding the copper being the ligands. When copper forms a Cu^2+ ion it loses the 4s electron and one of its 3d electrons, chloride lone pair ions then bond to the 4s and 4p orbitals.
 
Reference
 
An Introduction to Complex Metal Ions. Retrieved on July 07, 2015 from http://www.chemguide.co.uk/inorganic/complexions/whatis.html

Subject Science
Due By (Pacific Time) 07/11/2015 05:00 pm
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