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Title: Non-linear optical properties of the mixed-metal mixed-chalcogen clusters [Fe2(CO)6?μ-SeC(Ph)=C(Se)??(OEt)C=Cr(CO)5?] and [Fe2(CO)6Se2?μ-(CO)3Cr(η5-C5H(CH2Ph)(Ph)(OEt)?]
Authors: Philip, Reji
Kumar, G.R.
Mathur, P.
Issue Date: Nov-1999
Publisher: Elsevier B. V.
Citation: Chemical Physics Letters, 1999, Vol.313, p719-724
Abstract: We report studies of the third-order optical non-linearity of the newly synthesized butterfly-shaped mixed-metal mixed-chalcogen clusters wFe2_CO.6_m-SeC_Ph.5C_Se.4__OEt.C5Cr_CO.54x and wFe2_CO.6Se2_m-_CO.3Cr_h5- C5H_CH2Ph._Ph._OEt.4x using 532 nm, 6 ns laser pulses. Their effective non-linear absorption coefficient and non-linear index intensity coefficient are measured by the z-scan technique from which the corresponding cubic hyperpolarizabilities are evaluated. The obtained values indicate a high non-linearity comparable to some of the best values reported previously for cluster compounds. Both compounds show strong optical limiting, and the second compound exhibits non-linear scattering. Their photostability is superior to many of the previously reported highly non-linear clusters. q1999 Elsevier Science B.V. All rights reserved.
Description: Restricted Access. An open-access version is available at (one of the alternative locations)
ISSN: 0009-2614
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Copyright: 1999 Elsevier B. V.
Appears in Collections:Research Papers (LAMP)

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