X-ray structure of a compound of cobalt with uridine 5′-monophosphate Evidence for metal-phosphate bonding only

Platinum(II) and magnesium(II) nucleotide complexes. Synthesis, FT-ir spectra, and structural properties

“…It could be conlcuded from the observations made on the ir spectra of all the structurally known (17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27) examples discussed here that ( a ) the absorption bands at about 1100. 970, and 800 cm-I in the spectra of niononucleotides are certainly due to the PO:-vibrational frequencies, as assigned in Table 4.…”

“…The Co(I1) ion is coordinated to the phosphate group of the 5'-UMPNa, molecule only in Co2(UMP),.4H,0 (22). On comparing the ir spectra of free 5'-UMPNa?…”

“…In the present work several complexes of Pt(I1) and Mg(l1) with 5'-GMP have been synthesized and characterized by elemental analysis, molar conductivity and FT-ir spectroscopy not reported so far. W e have also prepared a series of structurally known nucleotide nietal complexes (16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27), in order to compare and con-elate the spectroscopic results obtained here with the corresponding known compounds, to obtain information about the coordination site and structural properties of the new Mg(l1) and Pt(l1) complexes studied here. The structurally known complexes with their coordination sites are given in Table I .…”

Structure of binary complexes of mono- and polynucleotides with metal ions of the first transition group

“…The length of the bond N(7)-C (8), shorter than that of the bond C(8)- N(9) in the nucleotide, is modified in the metal-base complex so as to become longer. Determination of the crystallographic parameters showed that the binding of the copper ion to N(3) has a real effect on the ligand geometry near N(3), since considerable differences are found between the C(2)-N-(3)-C(4) and N(3)-C(4)-C(5) angles in the complex and the same angles in the nucleotide.…”

Electronic Structure Determination of Co(II)-Nucleotide Complexes by Using Magnetic and Mößbauer Emission Measurements

“…6 an d 7). H y d rated C o-5'U M P has a dim eric m olecular struc ture [17] w ith two m agnetically interacting cobalt ions per molecule. If we assum e th a t the cobalt ions are in the high spin state s = 3/2, the m agnetic behaviour o f the dim er can be in terp reted in term s o f the Bleaney-Bowers e q u atio n [16].…”