The non-linear optical (NLO) properties of two distorted cage clusters
{WAg3S3 [S2P(OCH2 CH3)(2)]}(S)(Ph(3)P)(3) (1) and {MoAg3S3[S2P(OCH2CH
3)(2)]}(S)(Ph(3)P)(3) (2) were studied. Both NLO absorption and refrac
tion were observed with 1 and 2, third-order effects were detected wit
h alpha(2) = 6 x 10(-10) mW(-1) for 1 and alpha(2) = 8 x 10(-10) mW(-1
) for 2. NLO refraction was also found on 1 and 2, with n(2) = 1 x 10(
-16) m(2) W-1 for 2. The non-linearity of these two clusters was compa
red with some related NLO materials. Copyright (C) 1996 Elsevier Scien
ce Ltd