C.V. Rani

Bio: C.V. Rani is an academic researcher from Government Arts College, Coimbatore. The author has contributed to research in topics: Dihedral angle & Hydrogen bond. The author has an hindex of 2, co-authored 3 publications receiving 8 citations.

Crystal structure of (E)-5-di­ethyl­amino-2-({[4-(di­methyl­amino)­phen­yl]imino}­meth­yl)phenol

Abstract: The title Schiff base compound, C19H25N3O, is approximately planar, with a dihedral angle of 9.03 (13)° between the planes of the aromatic rings, and has an E conformation about the N=C bond. The mol­ecular structure is stabilized by an intra­molecular O—H⋯N hydrogen bond, with an S(6) ring motif. In the crystal, mol­ecules are linked by C—H⋯π inter­actions, forming sheets parallel to the bc plane.

Stabilization of cobalt(I) by the tripodal ligands tris(2-pyridyl)methane and tris(2-pyridyl)phosphine. Structural, spectroscopic and ab initio studies of the [CoL(2)](n+) species

Abstract: The nature of bonding in a series of complexes [CoL 2 ] n+ [L = the tripodal ligand tris(2-pyridyl)methane or tris(2-pyridyl)phosphine, n = 1-3] has been investigated by single-crystal X-ray diffraction, X-ray absorption and electronic spectroscopy and density functional theory ab initio calculations. The structural studies reveal that the cobalt ions each exist in a distorted octahedral geometry defined by six N-donor atoms; the cations are all centrosymmetric. In both series of complexes the bond lengths Co I -N ≈ Co II -N > Co III -N. Data from the various studies indicate that the 'cobalt(I)' state of the complex [Co{X(C 5 H 4 N-2) 3 } 2 ] + (X = CH or P) is better described by the d 8 cobalt(I)-ligand formulation rather than as d 7 cobalt(II)-ligand radical.

Bidentate Schiff Base Ligands Appended Metal(II) Complexes as Probes of DNA and Plasma Protein: In Silico Molecular Modelling Studies.

Abstract: HL1 and HL2 (HL1 = 5-diethylamino-2-({[4-(diethylamino)phenyl]imino}methyl)-phenol; HL2 = 5-diethylamino-2-({[4-(dimethylamino)phenyl]imino}methyl)-phenol) are new Schiff base ligands which were prepared along with their metal(II) complexes of [Cu(L1)2] (1), [Cu(L1)2] (2), [Ni(L2)2] (3) and [Ni(L2)2] (4) and characterized by different analytical as well as spectroscopic analyses. The single crystal XRD analysis confirms the proposed structure of ligands such as HL1 and HL2. EPR spectral analysis gives evidence about the tetrahedrally coordinated geometry of complexes 1 and 2. Density functional theory (DFT) analysis was executed using B3LYP/6-31G(d,p)∪LanL2DZ level. The DNA sequence (along with Dickerson's sequence) specificity of complexes 1-4 was evaluated and it has resulted that the complexes 1-4 primarily interact with double helix of DNA via groove mode of binding. From plasma protein docking results, we can say that complexes 2 and 4 showed more binding towards HSA and may have good bioavailability and are prone to act as drug candidates. The observed findings show that these metal(II) complexes 1-4 are better DNA probes, will act as anticancer agents and stimulate strong research focusing on the design of new chemical probes of DNA.