The reaction of [Pt(en)(H(2)O)(2)](2+) with 1 equivalent of 1-methylcytosine at an initial pH of 6 ultimately led to the 1-methylcytosinato-bridged (ethylenediamine)platinum(II) dimer, [(en)Pt(MetCyt-H)(2)Pt(en)](NO(3))(2) (1). The species during the reactions prior to formation of 1 have been investigated by using (195)Pt NMR spectroscopy. From the reaction mixture the [Pt(en)(MetCyt)(2)](NO(3...

The two-dimensional coordination polymeric structures of the hydrated potassium and rubidium salts of (3,5-di-chloro-phen-oxy)acetic acid (3,5-D), namely, poly[μ-aqua-bis-[μ3-2-(3,5-di-chloro-phen-oxy)acetato]-dipotassium], [K2(C8H5Cl2O3)2(H2O)] n , and poly[μ-aqua-bis-[μ3-2-(3,5-di-chloro-phen-oxy)acetato]-dirubidium], [Rb2(C8H5Cl2O3)2(H2O)] n , respectively, have been determined and are descr...

In the title compound, [Cd(2)(C(7)H(3)NO(4))(2)(C(13)H(8)N(4))(2)(H(2)O)(2)], the Cd(II) ion is six-coordinated by two N atoms from a 1H-imidazo[4,5-f][1,10]phenanthroline (IP) ligand, one N atom and one O atom from a pyridine-2,3-dicarboxyl-ate (pdc) ligand, one O atom from another pdc ligand and one water mol-ecule in a distorted octa-hedral geometry. Two Cd(II) ions are bridged by a pair of ...

The reaction of a methanolic solution containing the bi-compartmental phenolic ligand 2,6-bis[bis(2-pyridylmethyl)aminomethyl]-4-chlorophenol (L(Cl)-OH) with MCl2·nH2O in the presence of NH4PF6 or NaClO4 afforded the dinuclear bridged-phenoxido dichlorido-metal(ii) complexes [Co2(μ-L(Cl)O)(H2O)2Cl2][Co2(μ-L(Cl)O)(MeOH)2Cl2](PF6)2 (), [Ni2(μ-L(Cl)O)(MeOH)2Cl2]PF6 (), [Ni2(μ-L(Cl)O)(MeOH)(H2O)Cl2...

Nitrous oxide reductase (N2OR) is a dimeric copper-dependent bacterial enzyme that catalyzes the reduction of N2O to N2 as part of the denitrification pathway. In the absence of an x-ray crystal structure, the current model of the nature of the copper sites within the enzyme is based on four copper atoms per monomer and assigns two copper atoms to an electron transfer center, CuA, a bis-thiolat...

Binding of the competitive inhibitor L-captopril to the dapE-encoded N-succinyl-L,L-diaminopimelic acid desuccinylase from Neisseria meningitidis (NmDapE) was examined by kinetic, spectroscopic, and crystallographic methods. L-Captopril, an angiotensin-converting enzyme (ACE) inhibitor, was previously shown to be a potent inhibitor of the DapE from Haemophilus influenzae (HiDapE) with an IC50 o...

Five dinuclear lanthanide complexes with formula [Ln2L2(OAc)4(MeOH)a(H2O)b] · cMeOH · dH2O (a = 2, b = 0, c = 2, d = 0, Ln = Sm (1), Gd (2), Dy (3); a = 0, b = 2, c = 4, d = 2, Ln = Tm (4)) and [Yb2L2(OAc)4(MeOH)2]·[Yb2L2(OAc)4(H2O)2] · 2H2O (5) (HL = (E)-N'-(2-hydroxybenzylidene)-2-mercaptonicotinohydrazide), have been synthesized and their crystal structures and magnetic properties are report...

Synthesis of molybdenum(vi) dioxido complexes 1-3, coordinated by one or two functionalized iminophenolate ligands HL1 or HL2, bearing a donor atom side chain or a phenyl substituent, respectively, allowed for systematic investigation of the oxygen atom transfer (OAT) reactivity of such complexes towards phosphanes. Depending on stoichiometry and employed phosphane (PMe3 or PPh3), different mol...

The ring-chain tautomerism of 2-(3-tosyl-1,2,3,4-tetrahydroquinazolin-2-yl)quinolin-8-ol (H(2)L(ring)) has been exploited to produce mononuclear complexes or, alternatively, dinuclear complexes, as desired, by varying the stoichiometry of the ligand. Cu(2+) and Zn(2+) stabilise the ring tautomeric form of the ligand in their mononuclear complexes M(HL(ring))(2). The structural characterisation ...