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101.
Reaction of (PNP)Ni, where PNP is [((t)Bu2PCH2SiMe2)2N](-1), with CO2 occurs rapidly even at -60 degrees C to form exclusively the product of transposition of the amide N and one CO2 oxygen: [((t)Bu2PCH2SiMe2)2O]Ni(NCO). DFT(B3LYP) evaluation of several candidate intermediates for breaking two Si/N and one C/O bond and forming two Si/O and one N/C bond reveal species at and below the energy of the separated particles, and establish the location of the spin densities in each. 相似文献
102.
Inside Cover: Chlorophyll‐Derived Yellow Phyllobilins of Higher Plants as Medium‐Responsive Chiral Photoswitches (Angew. Chem. Int. Ed. 51/2016) 下载免费PDF全文
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Expansion of Germanato‐Polyoxovanadate Cluster Cores: Solvothermal Syntheses and Selected Properties of (trenH2)2[{M(tren)}4V15Ge6O48(H2O)] (M = Co and Zn) 下载免费PDF全文
Two germanato‐polyoxovanadates with the {V15Ge6O48} cluster core are extended by covalent bonds to four transition metal amine complexes [M(tren)]2+ (M = Co and Zn, tren = tris(2‐aminoethyl)amine). The complexes have bonds to terminal atoms of the Ge2O7 units and such expansion of a germanato‐polyxovanadate was never observed before. The characterization of these compounds revealed the presence of two protonated tren molecules charge balancing the negative charges of the [{M(tren)}4V15Ge6O48(H2O)]4– anion. 相似文献
105.
Maren Voss Barbara Deutsch Iris Liskow Marianna Pastuszak Ulrike Schulte Stanisław Sitek 《Isotopes in environmental and health studies》2013,49(3):355-369
Nitrogen (N) retention and transformation in the Szczecin Lagoon, southern Baltic Sea, were studied by means of budget calculations and stable isotope data of dissolved and particulate matter. Two stations, one located at the main outlet of the lagoon (?wina Strait) and the other 100 km to the south, on the Oder River (Widuchowa), were sampled biweekly over the years 2000–2002. The Oder River is one of the five largest rivers draining into the Baltic Sea and the largest one discharging its waters into the western Baltic. According to our data, the Oder River carried approximately 60 kt y?1 total N, of which 7 kt y?1 (<12 %) are particulate organic nitrogen and 46 kt y?1 (77 %) dissolved inorganic nitrogen. Seasonal patterns of particulate nitrogen and nitrate concentrations were similar at Widuchowa and ?wina Strait station, but nitrate concentrations in the ?wina Strait were much lower, pointing not only to the dilution effect but also to considerable nutrient removal capacity (especially of nitrate) in the lagoon. The loss of nitrate suggests that denitrification is the major N-removal process, whereas primary production was only a minor contributor, due to the very low particle load. Combining budget calculations with stable isotope measurements reveal unique information about nitrogen turnover processes in the lagoon. 相似文献
106.
The addition of 2,6-dimethylphenyl isocyanide (CN[DMeP], two equivalents) to previously reported (PNP)Sc(III) pyridyl complexes resulted in the formation of novel indoline complexes of scandium. By varying the nature of the pyridyl moiety one can intercept an intermediate prior to methyl migration. In addition to structural studies of two indolene complexes, we also propose a mechanism for the insertion and indolene ring closure. 相似文献
107.
K Searles M Pink KG Caulton DJ Mindiola 《Dalton transactions (Cambridge, England : 2003)》2012,41(32):9619-9622
The synthesis and characterization of a series of iridium(I) and iridium(III) complexes supported by a 3,5-bis(trifluoromethyl)-2-(2'-pyridyl)pyrrole (L(-)) ligand are reported. Compound [Ir(L)(COD)] (COD = 1,5-cyclooctadiene) demonstrates reversible binding of hydrogen to form a dihydride complex [Ir(L)(H)(2)(COD)] with no hydrogenation of COD. 相似文献
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Rainer Streubel Prof. Dr. Maren Bode Janaina Marinas Pérez Gregor Schnakenburg Jörg Daniels Martin Nieger Peter G. Jones 《无机化学与普通化学杂志》2009,635(8):1163-1171
Facile synthesis of tungsten(0) complexes of the type 7a – g (R1 = C5Me5) and 8a – g (R1 = CH(SiMe3)2) using transient Li/Cl phosphanylidenoid tungsten(0) complexes 4 , 5 and carbonyl derivatives 6a – g is reported; furthermore, for all complexes NMR, IR spectroscopic, mass spectrometric investigations and, in addition, single‐crystal X‐ray structures of complexes 7b , d – g and 8b , d are presented. 相似文献
110.