times with solvent, and the volume was made up (to 25, 50, or 100 ml) with additional solvent. After mixing well, the solvent was delivered by means of a pipet into test tubes having a constriction. The test tubes were placed in a Dry Ice-acetone bath
each center until self-consistency is obtained. The coulomb Integrals were adjusted according to ar~ct + 0 (1grk where = 0.8 and qr is the electron density at atom r determined from the previous iteration. The resonance integrals were readjusted according to 0rs = 0o(Sra/0.275), where Srs represents an approximate overlap Integral between atoms r and s. The overlap integral was assumed to be proportional to the total bond order between atoms rand sand was calculated using Srs -EL Pcotal + CAY, where Aotal equals the sum of the and bond order, and EL = 0.08 and CAY = 0.115 as suggested byMulliken.38(40) J.
p‐Nitrophenyl‐hexanoat (I) wird der alkalischen Hydrolyse unterworfen und diese in Gegenwart von Polyseifen, hergestellt aus Polyvinylpyridinen und Äthyl‐bzw. Dodecylbromid, untersucht.
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