Second-order non-linear optical properties of Fe(SALEN) complexes

Solid-State Nonlinear Optical Properties of Mononuclear Copper(II) Complexes with Chiral Tridentate and Tetradentate Schiff Base Ligands

“…The solid-state NLO response of powder samples 1b , 1c , 2a , 2b , and 2c was investigated using the Kurtz–Perry technique [47] @1.907 µm, resulting in SHG efficiencies equal to 0.13, 0.44, 0.32, 0.19, and 0.30 times that of standard urea, respectively. Even if not high, these values are in line with those reported for the majority of similar Schiff base metal complexes [45,46,64,65,84], and lower than those reported only for [Mn(Cl)(4,4′-diNEt 2 -sal-(1 R ,2 R )-chxn)] [23,48] and [Ni(4,4′-diNEt 2 -sal-(1 R ,2 R )-dpen)] [23,49], whose SHG efficiencies are up to 8 and 13 times that of urea, respectively.…”

Solid-State Nonlinear Optical Properties of Mononuclear Copper(II) Complexes with Chiral Tridentate and Tetradentate Schiff Base Ligands

“…The solid-state NLO response of powder samples 1b , 1c , 2a , 2b , and 2c was investigated using the Kurtz–Perry technique [47] @1.907 µm, resulting in SHG efficiencies equal to 0.13, 0.44, 0.32, 0.19, and 0.30 times that of standard urea, respectively. Even if not high, these values are in line with those reported for the majority of similar Schiff base metal complexes [45,46,64,65,84], and lower than those reported only for [Mn(Cl)(4,4′-diNEt 2 -sal-(1 R ,2 R )-chxn)] [23,48] and [Ni(4,4′-diNEt 2 -sal-(1 R ,2 R )-dpen)] [23,49], whose SHG efficiencies are up to 8 and 13 times that of urea, respectively.…”

Synthesis and crystal structures of two isostructural manganese(III) and iron(III) complexes derived from N,N′-bis(3-ethoxysalicylidene)-1,2-propanediamine with cytochrome P450-like hydroxylation properties

“…It is notable that the coordinate bond lengths in the base plane of (1) are shorter than those of (2), while for the axial coordinate bonds, (1) are longer than (2). However all the coordinate bond values in the complexes are comparable to those observed in other Schiff base manganese(III) and iron(III) complexes [24][25][26][27]. The azide groups are nearly linear and show bent coordinate modes with the metal atoms [In (1), N3-N4-N5/Mn1-N3-N4 = 179.3(7) /122.5(4) ; In (2), N3-N4-N5/Mn1-N3-N4 = 178.6(5)°/125.8(4)°].…”

Pentacoordinated isothiocyanate iron(III) complexes supported by asymmetric tetradentate donor and acceptor Schiff base ligands: Spectral, Structural and Hirshfeld Surface Analyses

“…The situation is less straightforward for complex 4 for which no crystal structure is available. However, based on previous observations [33,[46][47][48][49][50][51] and despite the increase of electron density brought about by the two donor substituents that could increase the polarisability of the iron(III) center [36], the strong stretching vibration observed at 2062 cm -1 in the spectrum of 4 (Fig. S2) could also be confidently assigned to the SCNco-ligand bound via its nitrogen atom to the iron(III) ion.…”

Solid-State Nonlinear Optical Properties of Mononuclear Copper(II) Complexes with Chiral Tridentate and Tetradentate Schiff Base Ligands

“…The solid-state NLO response of powder samples 1b , 1c , 2a , 2b , and 2c was investigated using the Kurtz–Perry technique [47] @1.907 µm, resulting in SHG efficiencies equal to 0.13, 0.44, 0.32, 0.19, and 0.30 times that of standard urea, respectively. Even if not high, these values are in line with those reported for the majority of similar Schiff base metal complexes [45,46,64,65,84], and lower than those reported only for [Mn(Cl)(4,4′-diNEt 2 -sal-(1 R ,2 R )-chxn)] [23,48] and [Ni(4,4′-diNEt 2 -sal-(1 R ,2 R )-dpen)] [23,49], whose SHG efficiencies are up to 8 and 13 times that of urea, respectively.…”

Synthesis and crystal structures of two isostructural manganese(III) and iron(III) complexes derived from N,N′-bis(3-ethoxysalicylidene)-1,2-propanediamine with cytochrome P450-like hydroxylation properties

“…It is notable that the coordinate bond lengths in the base plane of (1) are shorter than those of (2), while for the axial coordinate bonds, (1) are longer than (2). However all the coordinate bond values in the complexes are comparable to those observed in other Schiff base manganese(III) and iron(III) complexes [24][25][26][27]. The azide groups are nearly linear and show bent coordinate modes with the metal atoms [In (1), N3-N4-N5/Mn1-N3-N4 = 179.3(7) /122.5(4) ; In (2), N3-N4-N5/Mn1-N3-N4 = 178.6(5)°/125.8(4)°].…”

Pentacoordinated isothiocyanate iron(III) complexes supported by asymmetric tetradentate donor and acceptor Schiff base ligands: Spectral, Structural and Hirshfeld Surface Analyses

“…The situation is less straightforward for complex 4 for which no crystal structure is available. However, based on previous observations [33,[46][47][48][49][50][51] and despite the increase of electron density brought about by the two donor substituents that could increase the polarisability of the iron(III) center [36], the strong stretching vibration observed at 2062 cm -1 in the spectrum of 4 (Fig. S2) could also be confidently assigned to the SCNco-ligand bound via its nitrogen atom to the iron(III) ion.…”

Solid-State Nonlinear Optical Properties of Mononuclear Copper(II) Complexes with Chiral Tridentate and Tetradentate Schiff Base Ligands

“…The solid-state NLO response of powder samples 1b , 1c , 2a , 2b , and 2c was investigated using the Kurtz–Perry technique [47] @1.907 µm, resulting in SHG efficiencies equal to 0.13, 0.44, 0.32, 0.19, and 0.30 times that of standard urea, respectively. Even if not high, these values are in line with those reported for the majority of similar Schiff base metal complexes [45,46,64,65,84], and lower than those reported only for [Mn(Cl)(4,4′-diNEt 2 -sal-(1 R ,2 R )-chxn)] [23,48] and [Ni(4,4′-diNEt 2 -sal-(1 R ,2 R )-dpen)] [23,49], whose SHG efficiencies are up to 8 and 13 times that of urea, respectively.…”

Synthesis and crystal structures of two isostructural manganese(III) and iron(III) complexes derived from N,N′-bis(3-ethoxysalicylidene)-1,2-propanediamine with cytochrome P450-like hydroxylation properties

“…It is notable that the coordinate bond lengths in the base plane of (1) are shorter than those of (2), while for the axial coordinate bonds, (1) are longer than (2). However all the coordinate bond values in the complexes are comparable to those observed in other Schiff base manganese(III) and iron(III) complexes [24][25][26][27]. The azide groups are nearly linear and show bent coordinate modes with the metal atoms [In (1), N3-N4-N5/Mn1-N3-N4 = 179.3(7) /122.5(4) ; In (2), N3-N4-N5/Mn1-N3-N4 = 178.6(5)°/125.8(4)°].…”

Pentacoordinated isothiocyanate iron(III) complexes supported by asymmetric tetradentate donor and acceptor Schiff base ligands: Spectral, Structural and Hirshfeld Surface Analyses

“…The situation is less straightforward for complex 4 for which no crystal structure is available. However, based on previous observations [33,[46][47][48][49][50][51] and despite the increase of electron density brought about by the two donor substituents that could increase the polarisability of the iron(III) center [36], the strong stretching vibration observed at 2062 cm -1 in the spectrum of 4 (Fig. S2) could also be confidently assigned to the SCNco-ligand bound via its nitrogen atom to the iron(III) ion.…”