Isolation, X-ray structure and properties of an unusual pentacarbonyl(2,2′-pyridyl-quinoxaline) tungsten complex

Synthesis, Characterization, DNA Binding, and Photocleavage Activity of Oxorhenium (V) Complexes with α‐Diimine and Quinoxaline Ligands

“…These values compare well with those reported for rhenium (V) complexes containing a chelating ligand in their coordination sphere [ 32 ]. The characteristic bands corresponding to the ν (CN) and ν (C=C) modes of the quinoxaline and diimine ligand appear in the range 1680–1420 cm −1 in the IR spectra of the complexes 1 – 3 [ 20 , 25 , 32 ].…”

“…2-(2′-pyridyl)quinoxaline [ 25 , 26 ] and [ReOCl 3 (PPh 3 ) 2 ] [ 27 ] were prepared by reported procedures. All reactions and manipulations were conducted under a pure argon atmosphere using standard Schlenk techniques.…”

Pentacarbonyl[2‐(2′‐pyridyl)quinoxaline‐κN4]tungsten: A Combined Study of Its Conformational and Electronic Structure Based on Experimental and DFT‐TDDFT Data

“…[19] The ligation of pq to the W(CO) 5 moiety through the N 4 atom has been proven unambiguously by the elucidation of its structure by single-crystal X-ray diffraction methods. [17] Figure 2. Crystal packing of 1 as it is viewed along the a axis.…”

“…During the photolysis of W(CO) 6 in THF in the presence of pq we surprisingly discovered that the photogenarated ring closure reaction of W(CO) 4 (pq) goes through W(CO) 5 (N 4 -pq) (1); [17] the latter has been isolated and fully characterized. In order to explain the preference of the N 4 atom over the N 1 and N 1Ј atom upon ligation (Scheme 1), and explain the electronic spectra of 1, we have undertaken a DFT and TDDFT study and combined the data with the experimental results.…”

Synthesis, characterization, DFT studies and DNA binding of mixed platinum (II) complexes containing quinoxaline and 1,2-dithiolate ligands

“…and can be used as antibacterial, antiviral, anticancer, antihelmintic and insecticidal agent [30]. Besides, it adopts a planar conformation when it chelates to a metal ion [31][32][33].…”