Search

Your search keyword '"Tungsten -- Physiological aspects"' showing total 10 results
Start Over Descriptor "Tungsten -- Physiological aspects" Topic hydrogen -- physiological aspects
10 results on '"Tungsten -- Physiological aspects"'

1. Di- and tricobalt Dawson sandwich complexes: synthesis, spectroscopic characterization, and electrochemical behavior of Na (sub)18 [(NaOH (sub)2) (sub)2 Co (sub)2 (P (sub)2 W (sub)15 O (sub)56) (sub)2] and Na (sub)17 [(NaOH (sub)2) Co (sub)3 (H (sub)2 O)(P (sub)2 W (sub)15 O (sub)56) (sub)2]

Author

Ruhlmann, Laurent, Canny, Jacqueline, Contant, Roland, and Thouvenot, Rene

Subjects
Chemistry, Inorganic -- Research, Coordination compounds -- Physiological aspects, Electrochemistry -- Research, Sodium -- Physiological aspects, Oxygen -- Physiological aspects, Cobalt -- Physiological aspects, Hydrogen -- Physiological aspects, Chemical reactions -- Analysis, Phosphorus -- Physiological aspects, Tungsten -- Physiological aspects, Nuclear magnetic resonance spectroscopy -- Usage, Chemistry
Abstract

Research has been conducted on the di- and tricobalt Dawson sandwich complexes. The synthesis of these complexes has been carried out by the reaction condition modification and the characterization of the complexes has been carried via (super)31 P NMR spectroscopy, elemental analysis and IR.

Published
2002

2. Synthesis and crystal structures of (fulvalene)W (sub)2 (SH) (sub)2 (CO) (sub)6, (fulvalene)W (sub)2 (mu-S (sub)2) (CO) (sub)6, and (fulvalene)W (sub)2 (mu-S)(CO) (sub)6: low valent tungsten carbonyl sulfide and disulfide complexes stabilized by the bridging fulvalene ligand

Author

Capps, Kenneth B., Whitener, Glenn D., Bauer, Andreas, Abboud, Khalil A., Wasser, Ian M., Vollhardt, K. Peter C., and Hoff, Carl D.

Subjects
Chemistry, Inorganic -- Research, Tungsten -- Physiological aspects, Carbon monoxide -- Physiological aspects, Sulfur -- Physiological aspects, Hydrogen -- Physiological aspects, Coordination compounds -- Physiological aspects, Ligands -- Physiological aspects, Chemistry
Abstract

Research has been conducted on the (fulvalene)W (sub)2 (H) (sub)2 (CO) (sub)6 reaction with 2/8S (sub)8 in tetrahydrofuran. The quantitative formation of (fulvalene)W (sub)2 (SH) (sub)2 (CO) (sub)6 and the crystal structure of the complex are reported.

Published
2002

3. Syntheses, crystal structures, and density functional theory calculations of the closo-[1-M(CO) (sub)3 (nu (super)4 -E (sub)9)] (super)4- (E= Sn, Pb; M= Mo, W) cluster anions and solution NMR spectroscopic characterization of [1-M(CO) (sub)3 (nu (super)4 -Sn (sub)9)] (super)4- (M= Cr, Mo, W)

Author

Campbell, Janette, Mercier, Helene P. A., Franke, Holger, Santry, David P., Dixon, David A., and Schrobilgen, Gary J.

Subjects
Chemistry, Inorganic -- Research, Density functionals -- Analysis, Anions -- Physiological aspects, Coordination compounds -- Physiological aspects, Molybdenum -- Physiological aspects, Lead -- Physiological aspects, Tungsten -- Physiological aspects, Tin -- Physiological aspects, Oxygen -- Physiological aspects, Hydrogen -- Physiological aspects, Chromium -- Physiological aspects, Chemistry
Abstract

Research has been conducted on the heteroatomic closo-[1-M(CO) (sub)3 (nu (super)4 -E (sub)9)] (super)4- (E= Sn, Pb; M= Mo, W) anions. The crystal structures of these anions and solution characterization of the [1-M(CO) (sub)3 (nu (super)4 -Sn (sub)9)] (super)4- (M= Cr, Mo, W) anions have been investigated and the results of the NMR spectroscopy analysis of the anions are presented.

Published
2002

4. Preparation, structure, and properties of the corner-shared double cubes [Mo (sub)6 HgQ (sub)8 (H (sub)2 O) (sub)18] (super)8+ (Q= S, Se) and tungsten analogues

Author

Fedin, Vladimir P., Sokolov, Maxim, Lamprecht, Gert J., Hernandez-Molina, Rita, Seo, Mi-Sook, Virovets, Alexander V., Clegg, William, and Sykes, A. Geoffrey

Subjects
Chemistry, Inorganic -- Research, Molybdenum -- Physiological aspects, Mercury -- Physiological aspects, Hydrogen -- Physiological aspects, Oxygen -- Physiological aspects, Sulfur -- Physiological aspects, Selenium -- Physiological aspects, Coordination compounds -- Physiological aspects, Tungsten -- Physiological aspects, Chemistry
Abstract

Research has been conducted on the mercury-containing purple corner-shared [Mo (sub)6 HgS (sub)8 (H (sub)2 O) (sub)18] (super)8+ double cube derivative of green [Mo (sub)3 S (sub)4 (H (sub)2 O) (sub)9] (super)4+. The preparation of this derivative under the air-free conditions via the reaction with Hg (super)0 and with Hg (super)I (sub)2 is described.

Published
2001

5. Preparation, structure, and reactivity of Ge-containing heterometallic cube derivatives of [M (sub)3 E (sub)4 (H (sub)2 O) (sub)9] (super)4+ (M=Mo, W; E=S, Se)

Author

Mi-Sook Seo, Fedin, Vladimir P., Sokolov, Maxim N., Hernandez-Molina, Rita, Sokolowski, Achim, Elsegood, Mark R. J., Clegg, William, and Sykes, A. Geoffrey

Subjects
Chemistry, Inorganic -- Research, Germanium -- Physiological aspects, Hydrogen -- Physiological aspects, Oxygen -- Physiological aspects, Molybdenum -- Physiological aspects, Selenium -- Physiological aspects, Sulfur -- Physiological aspects, Tungsten -- Physiological aspects, Chemistry
Abstract

Research has been conducted on the Group 14 germanium. The incorporation of this Group into the incomplete cuboidal clusters [M (sub)3 E (sub)4 (H (sub)2 O) (sub)9] (super)4+ (M=Mo, W; E=S, Se) has been investigated and the results are reported.

Published
2001

6. Cis-trans isomerization in triply-bonded ditungsten complexes: a multitude of possible pathways

Author

Vondele, Joost Vande, Magistrato, Alessandra, and Rothlisberger, Ursula

Subjects
Chemistry, Inorganic -- Research, Tungsten -- Physiological aspects, Coordination compounds -- Physiological aspects, Isomerization -- Physiological aspects, Chlorine -- Physiological aspects, Phosphorus -- Physiological aspects, Nitrogen -- Physiological aspects, Hydrogen -- Physiological aspects, Density functionals -- Analysis, Chemistry
Abstract

Research has been conducted on the triply-bonded ditungsten complexes. The mechanisms of the cis-trans isomerization in these complexes with stoichiometry W (sub)2 Cl (sub)4 (NHEt) (sub)2 (PMe (sub)3) (sub)2 have been investigated via the static density functional calculations and Car-Parrinello simulations and the results are reported.

Published
2001

7. Preparation and substitution chemistry of [Bu (sub)4 N] (sub)2 [W (sub)6 Cl (sub)8 (p-OSO (sub)2 C (sub)6 H (sub)4 CH (sub)3) (sub)6]. A useful precursor for pseudohalide, acetate, and organometallic complexes containing the {W (sub)6 Cl (sub)8} (super)4+ core

Author

Weinert, Charles S., Prokopuk, Nicholas, Arendt, Stephanie M., Stern, Charlotte L., and Shriver, Duward F.

Subjects
Chemistry, Inorganic -- Research, Chlorine -- Physiological aspects, Tungsten -- Physiological aspects, Hydrogen -- Physiological aspects, Oxygen -- Physiological aspects, Sulfur -- Physiological aspects, Coordination compounds -- Physiological aspects, Acetates -- Physiological aspects, Halides -- Physiological aspects, Chemistry
Abstract

Research has been conducted on the tosylate cluster. The preparation and characterization of the cluster have been performed via the use of IR and NMR spectroscopy, elemental analysis and X-ray crystal structure study and the results indicate that this cluster is a useful material for the pseudohalide cluster preparation.

Published
2001

8. Synthesis and characterization of copper-, zinc-, manganese-, and cobalt-substituted dimeric heteropolyanions, [(alpha-XW (sub)9 O (sub)33) (sub)2 M (sub)3 (H (sub)2 O) (sub)3] (super)n- (n= 12, X= As (super)III, Sb (super)III, M= Cu (super)2+, Zn (super)2+; n= 10, X= Se (super)IV, Te (super)IV, M= Cu (super)2+) and [(alpha-AsW (sub)9 O (sub)33) (sub)2 WO(H (sub)2 O) M (sub)2 (H (sub)2 O) (sub)2] (super)10- (M= Zn (super)2+, Mn (super)2+, Co (super)2+)

Author

Kortz, Ulrich, Al-Kassem, Noha K., Savelieff, Masha G., Kadi, Nisrine A. Al, and Sadakane, Masahiro

Subjects
Chemistry, Inorganic -- Research, Copper -- Physiological aspects, Zinc -- Physiological aspects, Manganese -- Physiological aspects, Cobalt -- Physiological aspects, Anions -- Physiological aspects, Tungsten -- Physiological aspects, Oxygen -- Physiological aspects, Hydrogen -- Physiological aspects, Arsenic -- Physiological aspects, Selenium -- Physiological aspects, Tellurium -- Physiological aspects, Chemistry
Abstract

Research has been conducted on the metal-oxygen cluster species, polyoxometalates. The structure and properties of these polyoxometalates have been investigated and the results are reported.

Published
2001

9. Alkylation reactions of [WS (sub)4] (super)2- and [(eta (super)5 -C (sub)5 Me (sub)5)WS (sub)3] (super)- with 2,6-bis(bromomethyl)pyridine: the first isolation of bisalkylated tetrathiometalate WS (sub)2 {2,6-(SCH (sub)2) (sub)2 (C (sub)5 H (sub)3 N)}

Author

Rong Cao and Tatsumi, Kazuyuki

Subjects
Chemical research -- Analysis, Alkylation -- Physiological aspects, Pyridine -- Physiological aspects, Carbon -- Physiological aspects, Sulfur -- Physiological aspects, Tungsten -- Physiological aspects, Bromine -- Physiological aspects, Nitrogen -- Physiological aspects, Hydrogen -- Physiological aspects, Chemistry
Abstract

Research has been conducted on the tungsten trithio and tetrathio complexes. The alkylation reactions of these complexes with 2,6-bis(bromomethyl)pyridine have been carried out and the details are reported.

Published
2002

10. Relative efficiencies of CpM(CO) (sub)n CH (sub)3 and CpM(CO) (sub)n Ph (M= Cr, Mo, W, and Fe) complexes in photoinduced DNA cleavage

Author

Mohler, Debra L., Barnhardt, E. Keller, and Hurley, Allison L.

Subjects
Chemistry, Organic -- Research, Carbon monoxide -- Physiological aspects, Hydrogen -- Physiological aspects, Molybdenum -- Physiological aspects, DNA -- Physiological aspects, Photochemical research -- Analysis, Iron -- Physiological aspects, Tungsten -- Physiological aspects, Chromium -- Physiological aspects, Coordination compounds -- Physiological aspects, Biological sciences, Chemistry
Abstract

Research has been conducted on the photoinduced DNA cleavage. Results indicate that this cleavage occurs upon the photolysis of such complexes as CpM(CO) (sub)n R, where M= W and Fe and R= CH (sub)3, C (sub)6 H (sub)5 but not when M= Cr or Mo.

Published
2002

Catalog

Books, media, physical & digital resources
See catalog results