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Spectroscopy molecular - Coggle Diagram
Spectroscopy molecular
Chapter 1
Mirror Reflection
reflex all atom across a plane at same distance
Inversion
invert all atom through a point at center at equal distance
configuration remain unchanged
Proper Rotation
configuration of molecule remain unchanged
n= order of axis
rotate about 360/n
Improper rotation
rotatin of 360/n + reflectio
Identity
Consist of 360 rotation leaving molecule unchange
all molecule have this
Chapter 3
Rigid motor
symmetric tops
prolate
Ib=Ic>Ia
oblate
Ib=Ic<Ia
spherical tops
Ia=Ib=Ic
linear molecules
homo molecules
hetero molecules
Ia=0 Ib=Ic
Asymmetrc tops
Ia != Ib != Ic
rigid Diatomic Molecules
Moment of Inertia = resistance to a change in inertia
I=m1r1^2+m2r2^2
I=Hr0^2
H=m1m2/(m1+m2)
rotation at e level
Ej=Bj(j+1)
total E= Ej1-Ej0
B=h/(8pi^2Ic)
Rj->j+1=2B(j+1)
pure rotational spectra
only rotation no vibration
selection rules
gross selection rules
has permanen d moment
require for spectrum to be observed
specific selection rules
no chaneg d moment
Chapter 2
beer lambert law
log I0/I=Ecl
energy level and transition
absorbtion photon
upward transition
emission photon
downward transition
E=hv
factor affecting the width
dropplet broadening
heinsenburg uncertainty
electromagnetic radiation
wavelength
low wavelength higher frequency higher energy
amplitude
higher amplitude higher energy
frequency
hz/s
period and velocity
c= wavelength*frequency