Search
Search Results
-
Recent Advances in the Chemistry of Difunctionalized Organo-Phosphorus and -Sulfur Compounds
Recent results related to the synthesis and reactivity of organocompounds substituted by both phosphorus and sulfur functional groups are reviewed....
-
Donor-Acceptor Complexes of Low-Coordinated Cationic π-Bonded Phosphorus Systems
Cationic low-coordinated π-bonded phosphorus compounds add Lewis donors, such as amines or phosphines. In contrast to the trigonal bipyramide formed...
-
Biologically Produced Sulfur
Sulfur compound oxidizing bacteria Sulfur compound oxidizing bacteria produce sulfur as an intermediate in the...
-
Specific Structures Enabled by Metallocene Catalysis in Polyethenes
This chapter briefly describes the history of metallocene polymerisation catalysts. The behaviour of metallocenes, particularly in copolymerisation...
-
Environmental Degradation of Polyethylene
The environmental degradation of polyethylene proceeds by synergistic action of photo- and thermo-oxidative degradation and biological activity....
-
Ligand Field Theoretical Considerations
The phenomenon of the thermal spin transition, as observed for octahedral transition metal complexes having a d...
-
Special Classes of Iron(II) Azole Spin Crossover Compounds
In this chapter, selected results obtained so far on Fe(II) spin crossover compounds of 1,2,4-triazole, isoxazole and tetrazole derivatives are...
-
Angular momentum and spectral decomposition of ring currents: aromaticity and the annulene model
By a widely accepted criterion, an aromatic (anti-aromatic) π-conjugated system is one that sustains a global diatropic (paratropic) ring current...
-
Assessing Nitrogen Carrying Capacity for Blue Hill Bay, Maine: A Management Case History
As net-pen aquaculture in coastal waters grows, regulatory agencies must consider the potential for localized eutrophication. To avoid excessive...
-
Ecosystem Indicators of Water Quality Part II. Oxygen Production and Oxygen Demand
Seasonal transitions from oxygen production to oxygen demand at coastal aquaculture sites in southwestern New Brunswick (SWNB) can be defined in...
-
On the Prebiotic Synthesis of Nucleobases, Nucleotides, Oligonucleotides, Pre-RNA and Pre-DNA Molecules
All the strategies for the prebiotic syntheses of RNA and DNA assume the adequate availability of the presumptive precursors such as purine and...
-
Chitosan Chemistry: Relevance to the Biomedical Sciences
Chitin is well characterized in terms of analytical chemistry, is purified from accompanying compounds, and derivatized in a variety of fashions....
-
From the Prebiotic Synthesis of α-Amino Acids Towards a Primitive Translation Apparatus for the Synthesis of Peptides
The demonstration that ribosomal peptide synthesis is a ribozyme-catalyzed reaction does not establish that amino acids and peptides have been...
-
State of the Art. Chemical Synthesis of Biophosphates and their Analogues via PIII Derivatives
This chapter is concerned with preparation and applications of tricoordinate phosphorus compounds in synthesis of biophosphates and their structural...
-
Complexes with a Metal-Phosphorus Triple Bond
A survey of the existing complexes containing a transition metal-phosphorus triple bond is presented. Based on the different types of these...
-
Electron Spin Resonance Spectroscopy
The theoretical principles of the ESR technique and its application in the field of molecular sieve science are reviewed. The first part of this...
-
-
DNA Electron Transfer Processes: Some Theoretical Notions
Charge motion within DNA stacks, probed by measurements of electric conductivity and by time-resolved and steady-state damage yield measurements, is...
-
Polarons and Transport in DNA
It has been widely considered that the wavefunction of an extra electron or hole on the base stack of a DNA molecule is confined to a single site,...
-
Heat Capacity Studies of Spin Crossover Systems
As the spin crossover phenomena occurring in Oh symmetry involve a transfer of electrons between the eg and t2g orbitals, the metal-to-ligand bond...