Question

I need help with all of these.

Summarize this relationship, filling in the blanks with weaker and/or stronger In a metal carbonyl complex, the C bond, the the M the C-O bond 5) Typically we draw a carbonyl ligand as in Figure 2 below Consider a case in which the backbonding from the metal is very strong. Can you draw a resonance structure that more accurately depicts this interaction? Figure 2. Weak backbonding backbonding Part I. Infrared spectroscopy Strong IR spectroscopy is a useful technique for assessing the C-O bond strength of organic carbonyl compounds. The same is true for metal carbonyls. Recal that IR spectroscopy assesses the frequency of vibrational motions (stretching and bending) in a molecule. Frequencies are reported in wavenumbers (cm). 1) Summarize, filling in the blanks with increases or decreases. The frequency of stretching increases as e the size/mass of an atom the strength of the bond and 2) The observed stretching band in free CO is 2143 cm. Do you expect the CO stretching band in a carbonyl complex to be higher or lower? Explain. 3) Consider the data provided in the table below. Compound Froquency (em Rationalize the trend observed for v in first five complexes. ITI(COLI 1748 IVCON 1859 VICOL 1976 CriCoL 2000 Mn(COLT 2100 free CO 2143

Answer 1