SYNTHESES, CRYSTAL-STRUCTURES, AND NLO PROPERTIES OF NEW CHIRAL INORGANIC CHROMOPHORES FOR 2ND-HARMONIC GENERATION

Citation
G. Lenoble et al., SYNTHESES, CRYSTAL-STRUCTURES, AND NLO PROPERTIES OF NEW CHIRAL INORGANIC CHROMOPHORES FOR 2ND-HARMONIC GENERATION, Inorganic chemistry, 37(9), 1998, pp. 2158-2165
Citations number
54
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
ISSN journal
00201669
Volume
37
Issue
9
Year of publication
1998
Pages
2158 - 2165
Database
ISI
SICI code
0020-1669(1998)37:9<2158:SCANPO>2.0.ZU;2-7
Abstract
A new chiral ligand (H2L) based on the condensation of diaminocyclohex ane and 4-(diethylamino)salicylaldehyde is reported along with its nic kel(II) and manganese(III) complexes. These compounds all crystallize in noncentrosymmetric space groups. Crystal data are as follows. For t he ligand(C28H40N4O2): monoclinic, I2, a = 15.487(2) Angstrom, b = 8.1 988(6) Angstrom, c = 20.958(3) Angstrom, beta = 95.92(1)degrees, Z = 4 . For the (NiL)-L-II complex: monoclinic, P2(1), a = 8.613(2) Angstrom , b = 21.714(4) Angstrom, c = 15.870(4) Angstrom, beta = 91.02(2)degre es, Z = 4. For the (MnLCl)-L-III complex: orthorhombic, P2(1)2(1)2(1), a = 7.233(2) Angstrom, b = 15.159(3) Angstrom, c = 25.591(7) Angstrom , Z = 4. The manganese derivative exhibits an efficiency 8 times that of urea in second-harmonic generation at 1.9 mu m. INDO/SCI-SOS quantu m-chemical calculations predict a sizable molecular nonlinear response and an enhancement of the nonlinearity after metal complexation.