Three coordination polymers constructed from bisi

Authors: Ning Zhao YueE Deng Ping Liu CaiXia An TianXi Wang ZhaoXun Lian

Publish Date: 2014/09/24

Volume: 40, Issue: 1, Pages: 11-19

PDF Link

Abstract

Three coordination polymers NiH2O2bib2H2BTA·2H2O n 1 Co2bib2BTA·H2O n 2 and Co2bib2CA2·H2O n 3 H4BTA = biphenyl33′44′tetracarboxylic acid bib = 1 2bisimidazollylmethylbenzene H2CA = camphanic acid have been synthesized under hydrothermal conditions In complex 1 bib serves a bridging ligand to link two NiII atoms into an infinite jointlike chain In 2 binuclear units are connected by BTA and bib ligands to form 2D sheets In 3 each NiII atom is coordinated with two bib ligands to give a 22membered ring which is further linked by CA ligands to form a ladderlike chain The thirdorder nonlinear optical NLO properties of the complexes were determined by Zscan technique in DMSO solution All three complexes exhibit strong thirdorder NLO absorption with absorptive coefficients βMKS 144 × 10−10 m W−1 for 1 168 × 10−10 m W−1 for 2 and −631 × 10−10 m W−1 for 3 respectively of which compound 3 shows saturable absorption The thirdorder NLO susceptibilities χ 3 were calculated as 032 × 10−10 for 1 037 × 10−10 for 2 and 139 × 10−10 esu for 3 while the hyperpolarizabilities γ′ are 995 × 10−29 for 1 585 × 10−29 for 2 and 464 × 10−28 esu for 3 respectively

Keywords: