Results 191 to 200 of about 9,130,114 (266)

Competing hydrogen bonding in methoxyphenols: The rotational spectrum of o-vanillin

Journal of Molecular Spectroscopy, 2011
Abstract The conformational preferences of o -vanillin have been investigated in a supersonic jet expansion using Fourier transform microwave (FT-MW) spectroscopy. Three molecular conformations were derived from the rotational spectrum. The two most stable structures are characterized by a moderate O H···O C hydrogen bond between the aldehyde and ...
Emilio J. Cocinero, Alberto Lesarri, Patricia Écija, Francisco Basterretxea, José A. Fernández, Fernando Castaño   +5 more
openaire   +1 more source

Physicochemical studies of (o-vanillin thiosemicarbazonato)-nickel(ii) chelate

Transition Metal Chemistry, 1994
Five- and six-membered rings result from the chelation of nickel(II) by the dibasic tridentate Schiff base ligand, o-vanillin thiosemicarbazone(o-VTSC), a new chelate prepared and characterized. The structural results are discussed in the light of spectroscopic and other data.
Agarwala, BV, Hingorani, Sunita, Puri, Vanita, Khetrapal, CL, Naganagowda, GA   +4 more
openaire   +1 more source

DNA interaction, docking, molecular modelling and biological studies of o-Vanillin derived Schiff base metal complexes

Journal of Molecular Structure, 2019
In the present studies, [Cu(ABOVL)]1, [Co(ABOVL)]2, [Cr (ABOVL)]3, and [Zn (ABOVL)]4 complexes were prepared where ABOVL is the condensation product of 2-hydroxy-3-methoxybenzaldehyde (o-Vanillin) and (2-aminophenyl)methanol (2-aminobenzylalcohol).
B. Kavitha, M. Sravanthi, P. S. Reddy
semanticscholar   +1 more source

Method for determining the average degree of substitution of o-vanillin derivatized porcine somatotropin

Journal of Pharmaceutical and Biomedical Analysis, 2006
Electrospray mass spectral observation directly on a sample of a derivatized protein, such as porcine somatotropin (pST), affords a method for evaluating the degree of substitution of this protein. Derivatization of the lysine residues and the terminal amino residue here by formation of a Schiff base with a small aromatic aldehyde (in this case, o ...
Thomas R, Sharp, Ronald, Morris, George J, Horan, Linda H, Pezzullo, Justin G, Stroh   +4 more
openaire   +2 more sources

Homodinuclear Ni (II) and Cu (II) Schiff base complexes derived from O-vanillin with a pyrazole bridge: Preparation, crystal structures, DNA and protein (BSA) binding, DNA cleavage, molecular docking and cytotoxicity study

Journal of Photochemistry and Photobiology A: Chemistry, 2019
Two homodinuclear complexes [Ni2(L)(μ-pz)] (C1) and [Cu2(L)(μ-pz)] (C2) (L = N,N′-bis(3-methoxysalicylidene)-1,3-diamino-2-propanol) were synthesized and characterized by elemental analysis, spectroscopic methods (UV–vis, 1H NMR and IR) and single ...
L. Zarei, Z. Asadi, M. Dušek, V. Eigner
semanticscholar   +1 more source

New dinuclear compounds of dysprosium and erbium constructed by an O-vanillin ligand and β-diketonate coligand: Synthesis, near-Infrared luminescent and magnetism

, 2020
Four novel lanthanide complexes based on O-vanillin (HL) ligand and 1,3-diphenyl-1,3-propanedione (Hdbm) coligand have been assembled by utilizing different solvents: [Dy2(dbm)4(L)2]·CH3CN (1), [Dy2(dbm)4(L)2]·0.25C2H5OH·0.5CH2Cl2 (2), [Er2(dbm)4(L)2] (3)
Y. Duan, Dong-Fang Wu, Huanni Chen, Yun-Juan Wang, Ling Li, Hongling Gao, J. Cui   +6 more
semanticscholar   +1 more source

Synthesis, structural peculiarities, theoretical study and biological evaluation of newly designed O-Vanillin based azomethines

, 2020
Two azomethines: (E)-2-(((2-hydroxyethyl)imino)methyl)-6-methoxyphenol (1) and (E)-3-(((2-hydroxyethyl)imino)methyl)benzene-1,2-diol (2) were synthesized and characterized in solid state by FT-IR spectroscopy and single crystal X-ray crystallography ...
M. Zubair, M. Sirajuddin, K. Ullah, A. Haider, Fouzia Perveen, I. Hussain, Saqib Ali, M. Tahir   +7 more
semanticscholar   +1 more source

Über die Darstellung des 5‐Jod‐o‐vanillins und die Gewinnung von β‐Nitrostyrolen Zur Kenntnis des o‐Vanillins, VII

Archiv der Pharmazie, 1966
AbstractEs wird eine verbesserte Methode zur Herstellung des 5‐Jod‐o‐vanillins beschrieben. Umsetzungen hiermit sowie mit 5‐Brom‐o‐vanillin und deren Derivaten nach Ullmann zu Bisphenylverbindungen scheiterten. Auch mit 5‐Jod‐o‐veratrumaldehyd war keine Reaktion zu erreichen.
E. Profft, M. Pannach
openaire   +1 more source

The exchange processes in o-vanillin salicyloylhydrazone as studied by two-dimensional NMR

Journal of Molecular Structure, 1994
Multidimensional NMR studies of o-vanillin salicyloylhydrazone at various temperatures have been undertaken in deuterated dimethyl sulfoxide and its cryoprotective mixture in H2O and D2O, acetone and acetonitrile. The molecule is found to exist in two conformers in dimethyl sulfoxide and the cryoprotective mixture.
Agarwala, BV, Puri, V, Naganagowdab, GA, Khetrapai, CL   +3 more
openaire   +2 more sources

Structural elucidation of o-vanillin isonicotinoyl hydrazone and its metal complexes

Transition Metal Chemistry, 1993
A new series of complexes with the tridentate dibasic Schiff base ligand o-vanillin isonicotinoyl hydrazone (o-VINH) were prepared and characterized by i.r., 1H n.m.r. and electronic spectral studies, magnetic susceptibility measurements and t.g.a. The disappearance of low field signals due to OH, NH protons at 10.23 and 9.31 p.p.m. and downfield shift
S. Hingorani, B.V. Agarwala
openaire   +1 more source