Two important physical evidences supporting the synergic bonding in non-classical…

CHEMISTRY · Single correct · CBSE · Chemistry · Coordination Compounds · Coordination Compounds

Problem

Two important physical evidences supporting the synergic bonding in non-classical complexes are bond lengths and vibrational spectra. Vibrational spectra is based on the fact that the compression and extension of a bond may be analogous to the behavior of a spring and obeys Hook's law. νˉ=12πckμ cm−1\bar{\nu} = \frac{1}{2\pi c} \sqrt{\frac{k}{\mu}} \text{ cm}^{-1} where, kk = force constant of the bond which is directly proportional to bond strength of CO μ\mu = reduced mass of ligand νˉ\bar{\nu} = stretching frequency of the CO bond cc = velocity of light In which of the following complex stretching frequency for CO ligand is least as well as bond energy of M—C bond is higher . (1) (dien)Mo(CO)3(\text{dien})\text{Mo}(\text{CO})_3 (2) (Et3P)3Mo(CO)3(\text{Et}_3\text{P})_3\text{Mo}(\text{CO})_3 (3) (F3P)3Mo(CO)3(\text{F}_3\text{P})_3\text{Mo}(\text{CO})_3 (4) (Cl3P)3Mo(CO)3(\text{Cl}_3\text{P})_3\text{Mo}(\text{CO})_3

Related theory

Browse the problem library