Pigment or Organism Name:	Chlorophyll b (diethyl ether, Du et al. 1997)
Type:	biological pigment
Medium Type:	in vitro
Description:	Absorbance spectrum of in vitro Chl b in diethyl ether

			
x-axis label:	wavelength
x-axis units:	nm
y-axis label:	molar absorption coefficient
y-axis units:	cm-1/M
error label:	n/a
error units:	n/a

				
Source/Contact:	Jonathan S. Lindsey

Reference:	Du, H., R.A. Fuh, J. Li, A. Corkan, J.S. Lindsey. (1997). PhotochemCAD: A computer-aided design and research tool in photochemistry. Photochemistry and Photobiology, 68, 141-142, 1998.  	
	The molar absorption coefficient of Chlorophyll b dissolved in diethyl ether based on the absorbance measurements made by Junzhong Li on 12/11/97 using an Cary 3. 
	The absorbance data was normalized to have an absorption coefficient of 159100 at 435.8 nm.	

	Nsangou, M., A. Ben Fredj, N. Jaidane, M.G. Kwato Njock, Z. Ben Lakhdar. (2005). On the useof the MNDO-d semiempirical method for the structural study of chlorophyll b and anhydrous chlorophyll b dimer. Journal of Molecular Structure: THEOCHEM, 726 (2005): 245-251.	
	Semiempirical MNDO-d molecular orbital calculations have been used for the structural study of chlorophyll b and anhydrous chlorophyll
	b dimer systems in their respective ground states.	
	Source for molec image.	


Comments:	Peaks occur at about 435.75 and 624.25 nm.
	Molecular formula: C55-H70-O6-N4-Mg
	Chlb_Nsangou_2005_molec.jpg



Keywords:	chlorophyll b, photosynthetic pigment, chlorin pigment, plants, leaves, green
			
Datafile name:	Chlb_ether_Du_1997_spec.csv