Definition of BIGSPEC. Meaning of BIGSPEC. Synonyms of BIGSPEC

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Definition of BIGSPEC

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Meaning of BIGSPEC from wikipedia

- selected active space, typically five HOMOs and five LUMOs. The original BIGSPEC program from the Zerner group is not widely available, but the method is...
- porphyrins. He conceived and wrote a quantum chemistry program, known as BIGSPEC or ZINDO, for calculating electronic spectra of big molecules. In 1996...