1- Use your words to explain why a nitrogen atom and excess hydrogen make the binary molecule NH3, whereas a carb
Posted: Thu Feb 17, 2022 11:12 am
1- Use your words
to explain why a nitrogen atom and excess hydrogen make the binary
molecule NH3, whereas a carbon atom and excess hydrogen
make CH4?
Please do not base the answer on the octet rule.
Start by giving a partial energy level diagram that shows the
valence AOs and electron relevant to bonding. You can then use
Lewis structures or box configurations.
2- A nickel atom and excess
carbon monoxide make Ni(CO)4 in a tetrahedral
geometry. An iron atom and CO, on the other hand, make trigonal
bipyramidal Fe(CO)5, while chromium makes octahedral
Cr(CO)6.
2A Can you account for
the different stoichiometry of these complexes using the same
reasoning you applied in 1 for NH3 and
CH4? This means you have to start with partial energy
level diagrams, and then use boxes or whatever you deem necessary
to rationalize the results.
2B What is the
hybridization of the metal in the given three complexes.
3A Upon coordination to
a metal, CO is said to act as sigma-donor and a pi-acceptor. What
does this mean? You need to provide good drawings
3B The octahedral
complex [Ti(CO)6]-2 exhibits on single
band for CO stretch vibration in the IR spectrum at 1748
cm-1. Cr(CO)6 in contrast shows one
single band at 2000 cm-1. Explain why are the
frequencies so different?
to explain why a nitrogen atom and excess hydrogen make the binary
molecule NH3, whereas a carbon atom and excess hydrogen
make CH4?
Please do not base the answer on the octet rule.
Start by giving a partial energy level diagram that shows the
valence AOs and electron relevant to bonding. You can then use
Lewis structures or box configurations.
2- A nickel atom and excess
carbon monoxide make Ni(CO)4 in a tetrahedral
geometry. An iron atom and CO, on the other hand, make trigonal
bipyramidal Fe(CO)5, while chromium makes octahedral
Cr(CO)6.
2A Can you account for
the different stoichiometry of these complexes using the same
reasoning you applied in 1 for NH3 and
CH4? This means you have to start with partial energy
level diagrams, and then use boxes or whatever you deem necessary
to rationalize the results.
2B What is the
hybridization of the metal in the given three complexes.
3A Upon coordination to
a metal, CO is said to act as sigma-donor and a pi-acceptor. What
does this mean? You need to provide good drawings
3B The octahedral
complex [Ti(CO)6]-2 exhibits on single
band for CO stretch vibration in the IR spectrum at 1748
cm-1. Cr(CO)6 in contrast shows one
single band at 2000 cm-1. Explain why are the
frequencies so different?