The Coordination and Bioinorganic Chemistry of Molybdenum
09 Mar 2007-pp 1-223
About: The article was published on 2007-03-09. It has received 78 citations till now. The article focuses on the topics: Bioorganometallic chemistry & Bioinorganic chemistry.
Citations
More filters
TL;DR: In this paper, a nuclear molybdenum peroxo complexes containing Mannich base ligands has been synthesized by stirring ammonium heptamolybdate with excess 30% aqueous hydrogen peroxide followed by treatment with ethanolic solution of corresponding ligands.
Abstract: Dinuclear molybdenum(VI) peroxo complexes containing Mannich base ligands having formulae [Mo2O4(O2)2L-L(H2O)2] · H2O [where L-L = N-[1-morpholinobenzyl] acetamide (MBA), N-[1-piperidinobenzyl] acetamide (PBA), N-[1-morpholino(-4-nitrobenzyl)] benzamide (MPNBB), N-[1-piperidino(-3-nitrobenzyl)] benzamide (PMNBB), N-[1-morpholino(-2-nitrobenzyl)] acetamide (MONBA), and N-[1-morpholino(-3-nitrobenzyl)] acetamide (MMNBA)] have been synthesized by stirring ammonium heptamolybdate with excess 30% aqueous hydrogen peroxide followed by treatment with ethanolic solution of corresponding ligands. The complexes have been characterized by elemental analysis, molar conductance, magnetic measurements, infrared (IR), electronic, TGA/DTA, mass spectral, and 1H NMR studies. The complexes are non-electrolytes and diamagnetic. The IR spectral studies suggest that the ligands are bidentate to metal through carbonyl oxygen and ring nitrogen. Thermal analyses provide conclusive evidence for the presence of coordinated, as wel...
3 citations
TL;DR: The cyclic pentamer K2I2[Mo10O10(μ-S)2Cl4(H2O)2]Cl (II) was isolated and characterized by X-ray crystallography as discussed by the authors.
Abstract: The destruction of hydroxy and aqua bridges of the cyclic pentamer K2I2[Mo10O10(μ-S)10(OH)10(H2O)5] · 20H2O (I) in HCl in the presence of CsCl gave a new binuclear oxothiomolybdenic complex Cs3[Mo2O2(μ-S)2Cl4(H2O)2]Cl (II), which was isolated and characterized by X-ray crystallography. The dimeric fragment in complex II consists of two distorted octahedral Mo(V) centers, which have non-equivalent environment and are connected by two sulfide bridges. The Mo-Mo distance (2.8411(6) A) in II corresponds to a metal-metal bond.
3 citations
TL;DR: In this paper, the dissolved molybdenum (MoD) was measured in samples collected in the hypersaline Ojo de Liebre Lagoon and evaporation ponds of the Guerrero Negro saltern, Baja California Peninsula, Mexico.
2 citations
[...]
TL;DR: The chemistry of S-donor ligands with metal centers is reviewed in this article with emphasis placed on the structures and redox activity of the resultant complexes, including sulfides and thiolates.
Abstract: The chemistry of S-donor ligands with metal centres is reviewed with emphasis placed on the structures and redox activity of the resultant complexes. Sulfides and thiolates bind to a wide range of metal ions. The oxidation of thiolates to sulfones and sulfoxides and the structures and chemistry of metal-thiolene complexes are detailed. Thioethers are generally poor ligands for transition metal ions but macrocylic ligands afford stable complexes. Many metalloproteins contain metal–sulfur bonds and the structures of many of these have now been elucidated. This has sparked a renaissance in the synthesis of low-molecular weight metal complex mimics.
Keywords:
sulfides;
thiolates;
dithiolenes;
dithiocarbamates;
thioethers;
electrochemistry;
macrocycles;
metalloproteins
2 citations
TL;DR: A mononuclear complex [MoOCl 4 (H 2 O)] − readily forms a metal-metal-bonded core and a neutral, dinuclear complex with the [Mo 2 O 4 Cl 2 (Py) 4 ] composition is isolated as a product.
Abstract: A mononuclear complex [MoOCl 4 (H 2 O)] − readily forms a metalmetal bonded −{Mo 2 O 4 } 2+ core. A high content of pyridine in the reaction mixture prevents further aggregation of dinuclear cores into larger clusters and a neutral, dinuclear complex with the [Mo 2 O 4 Cl 2 (Py) 4 ] composition is isolated as a product. Solid state structures of two compounds containing this complex, [Mo 2 O 4 Cl 2 (Py) 4 ]·2.25Py ( 1 ) and [Mo 2 O 4 Cl 2 (Py) 4 ]·1.5PyHCl ( 2 ), were investigated by X-ray crystallography. Keywords: polyoxomolybdates; metal−metal bonded {Mo 2 O 4 } 2+ core; molybdenum(V) 1. Introduction The {Mo 2 O 4 } 2+ core (shown in Scheme 1) with d electrons localized in a Mo(V)−Mo(V) single bond appears as a recurrent structural motif in many contexts of molybdenum(V) coordination chemistry [1–7]. A group of high-nuclearity oxomolybdenum(V) complexes whose structures may be seen as the assemblies of two or more {Mo 2 O 4 } 2+ units has emerged in the past two decades [8]. The aggregation of dinuclear units is made possible by the ability of oxide and alkoxide ions to participate in μ
2 citations
Cites background from "The Coordination and Bioinorganic C..."
...The reason lies in one of the two pyridine ligands being bound to a position trans relative to the Mo=O group and being, therefore, subject to its well-documented trans influence [17]....
[...]
References
More filters
TL;DR: In this paper, the rate data for the generalized nucleophilic displacement reaction were reviewed, and the authors presented a method to estimate the rate of the generalized displacement reaction in terms of the number of nucleophiles.
Abstract: Recently (1) the rate data for the generalized nucleophilic displacement reaction were reviewed.
8,433 citations
1,436 citations
1,293 citations
702 citations
TL;DR: In this article, the preparation of alkyl and aryl π-cyclopentadienyl carbon monoxide or nitric oxide compounds of Cr, Mo, W, and Fe is described.
652 citations