Xy. Zhang et al., SOLVATOCHROMIC METHOD FOR DETERMINATION O F THE 2ND-ORDER MOLECULAR SUSCEPTIBILITY, BETA, OF LINEAR ORGANOMERCURY COMPOUNDS, Huaxue xuebao, 54(8), 1996, pp. 734-741
The second order molecular susceptibility, beta, of twelve arylmercuri
c nitrophenylacetylides which possess a linear molecular configuration
has been determined with solvatochromism technique to be in the order
of 10(-29) esu. There is no close relationship between the electronic
property of the substituent (D) and the value of beta, indicating tha
t an effective intramolecular charge-transfer from D to nitro group do
es not exist. lambda(max) of all the compounds in electronic spectra a
re in the range of 310 +/- 7 nm, which are over 60 nm shorter than tho
se of some other conjugated organic molecules which possess similar be
ta value. The condition and limitation of using this technique to dete
rmine beta of organometallic molecules are discussed.