| Abstract
| - In this manuscript, a relatively simple and inexpensive INDO/SCI finite-field (FF) method for calculatingpolarizabilities (α) is demonstrated to give good agreement with results obtained by both the INDO/MRD/SDCI sum-over-states routine and published results using the RPA method. The FF method is as effective asthe other techniques in predicting both ground and excited state α's in all substituted and unsubstituted polyenesstudied. We observe the correlation described by Marder and co-workers between bond-order-alternation(BOA) and dipolar properties, such as the change in α between the ground and excited states (Δα). In addition,qualitative, but not quantitative, agreement is seen between the calculated Δα's of polar polyenes and thosemeasured by Stark-effect spectroscopy.
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