scholarly journals Quantum chemical elucidation of the turn-on luminescence mechanism in two new Schiff bases as selective chemosensors of Zn2+: synthesis, theory and bioimaging applications

RSC Advances ◽  
2019 ◽  
Vol 9 (53) ◽  
pp. 30778-30789 ◽  
Author(s):  
Jessica C. Berrones-Reyes ◽  
Blanca M. Muñoz-Flores ◽  
Arelly M. Cantón-Diáz ◽  
Manuel A. Treto-Suárez ◽  
Dayan Páez-Hernández ◽  
...  

Two new selective zinc sensors (S,E)-11-amino-8-((2,4-di-tert-butyl-1-hydroxybenzylidene)amino)-11-oxopentanoic acid (A) and (S,E)-11-amino-8-((8-hydroxybenzylidene)amino)-11-oxopentanoic acid (B) based on a Schiff base and an amino acid are reported.

RSC Advances ◽  
2019 ◽  
Vol 9 (61) ◽  
pp. 35565-35565
Author(s):  
Jessica C. Berrones-Reyes ◽  
Blanca M. Muñoz-Flores ◽  
Arelly M. Cantón-Diáz ◽  
Manuel A. Treto-Suárez ◽  
Dayan Páez-Hernández ◽  
...  

Correction for ‘Quantum chemical elucidation of the turn-on luminescence mechanism in two new Schiff bases as selective chemosensors of Zn2+: synthesis, theory and bioimaging applications’ by Jessica C. Berrones-Reyes et al., RSC Adv., 2019, 9, 30778–30789.


2010 ◽  
Vol 65 (4) ◽  
pp. 503-510 ◽  
Author(s):  
Bernhard Schreiner ◽  
Christian Robl ◽  
Barbara Wagner-Schuh ◽  
Wolfgang Beck

A series of palladium(II) and platinum(II) complexes Cl2M(P-N-O) (M = Pd, Pt) with bidentate Schiff bases (P-N-O) from 2-(diphenylphosphino)benzaldehyde and α-amino acid esters has been synthesized, using PdCl2 or K[PtCl3(C2H4)], respectively. Abstraction of chloride from Cl2M(P-N-O) (using AgBF4) has afforded the cationic complexes [(P-N-O)M(Cl)]+BF4− in which the Schiff bases function as tridentate ligands with coordination of the ester group. The structures of Cl2Pd(Ph2PC6H4C(H)=N-CH2CO2Et) and of [(Cl)Pd(Ph2PC6H4C(H)=NC(H)(CH2CH=CH2)CO2Me)]+BF4− have been determined by X-ray diffraction. Complexes (L)MCl2 and [(L)MCl]+BF4 (M = Pd, Pt) have also been prepared with the reduced Schiff base Ph2PC6H4CH2NHC(H)(CH2Ph)CO2Me.


2010 ◽  
Vol 65 (6) ◽  
pp. 679-686 ◽  
Author(s):  
Bernhard Schreiner ◽  
Barbara Wagner-Schuh ◽  
Wolfgang Beck

The reactions of the chlorido-bridged complexes [Cp*M(Cl)(μ-Cl)]2 (M = Rh, Ir) with Schiff bases (P-N-O) from 2-(diphenylphosphino)benzaldehyde and α-amino acid esters afford the complexes Cp*M(Cl)2(P-N-O) in which the ligands function as monodentate P donors (M = Ir) or as bidentate P-N donors (M = Rh). These complexes can be converted into cationic complexes [Cp*M(Cl)(P-NO)]+ with bidentate P-N ligands by treatment with NH4PF6. The cationic complexes [Cp*M(Cl)(PN- O)]+Cl− have been detected also in solutions of Cp*M(Cl)2(P-N-O). The P-N-coordinated complex [Cp*Rh(Cl)(Ph2P-C6H4-C(H)=N-C(H)(CH2Ph)CO2Me)]+PF6− was characterized by X-ray diffraction. From Cp*M(Cl)2(P-N-O) and AgBF4 or AgPF6 (molar ratio 1 : 2) the dicationic complexes [Cp*M(P-N-O)]2+ are formed in which the ester group is also coordinated to the metal atom. The Schiff base from 2-(diphenylphosphino)benzaldehyde and allylglycine ester acts as a tridentate ligand, however with coordination of the C=C allyl group instead of the ester function.


2018 ◽  
Vol 42 (8) ◽  
pp. 6389-6398 ◽  
Author(s):  
Nadia Bouzayani ◽  
Sylvain Marque ◽  
Brahim Djelassi ◽  
Yakdhane Kacem ◽  
Jérôme Marrot ◽  
...  

New chiral Schiff bases have been synthesized and characterized with an important contribution from quantum chemical calculations at the DFT level of theory. They have been evaluated for their physical and biological properties.


2018 ◽  
Vol 42 (11) ◽  
pp. 8756-8764 ◽  
Author(s):  
Navjot Singh ◽  
Keshav Kumar ◽  
Neha Srivastav ◽  
Raghubir Singh ◽  
Varinder Kaur ◽  
...  

Fluorescent Schiff base organotin probes for the detection of chemical warfare agents.


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