Carborane–fullerene hybrids as a seemingly attractive–attractive dyad with high hyperpolarizability

Abstract
A combination between seemingly attractive carboranes and fullerene through an ethynyl π-system (compounds 1a–c) gives unexpectedly high β-values, thereby providing a guideline that in certain cases a seemingly A–A system becomes a promising complementary combination for obtaining high hyperpolarizability; the β values of 1a, 1b and 1c were 346, 483, and 1189 × 10−30 esu, respectively.

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