geoscience.net logo
+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Crown Ethers, Double-Decker, and Sandwich Complexes: Cation-Mediated Formation of Metallatopomer Coronates


, : Crown Ethers, Double-Decker, and Sandwich Complexes: Cation-Mediated Formation of Metallatopomer Coronates. Angewandte Chemie02 37(1-2): 172-175

Metallacoronates or metallacrown ether sandwich complexes? As with organocrown ethers, the size of the encapsulated cation (Na, Capo, or K) determines which product is formed--a crown ether, a dimeric crown ether, or a sandwich complex (see below). HL = ketipinate.

US$19.90

DOI: 10.1002/(sici)1521-3773(19980202)37:1/2<172::aid-anie172>3.0.co;2-0


Other references

Hennessy, D.W., 1983: Improved production from grazing cattle when given protein. In a 4-yr study, protein supplement was fed to Hereford heifers grazing Axonopus affinis so that they could be first-mated at 15 months of age and calve each yr thereafter. Protein supplemented heifers had av. daily gains of 500 g during the winte...

Harrison D.E.; Ashcroft S.J.H., 1982: Effects of calcium calmodulin and cyclic amp on the phosphorylation of endogenous proteins by homogenates of rat islets of langerhans. Activation of Ca2+-calmodulin- and cAMP-dependent protein kinases has been suggested to be involved in stimulus-secretion coupling in the pancreatic .beta.-cell. To study the properties of such kinases and their endogenous protein substrates, homo...

Uran,P.A.; Schrama,J.W.; Rombout,J.H.W.M.; Obach,A.; Jensen,L.; Koppe,W.; Verreth,J.A.J., 2008: Soybean meal-induced enteritis in Atlantic salmon at different temperatures. This study evaluates the effect of temperature on the development of intestinal disorders when Atlantic salmon are fed soyabean meal (SBM). In this study 20% of the dietary fishmeal was replaced by solvent-extracted Hipro SBM. Atlantic salmon rear...

Parker, MS., 1989: Effect of substrate composition on detritus accumulation and macroinvertebrate distribution in a southern Nevada desert stream. A 32-day colonization experiment was conducted to assess the effect of substrate particle size on the accumulation and size distribution of particulate detritus and on the distribution and abundance of benthic macroinvertebrates in a southern Neva...

Manser, J.S.; Christians, J.A.; Kamat, P.V., 2016: Intriguing Optoelectronic Properties of Metal Halide Perovskites. NlmCategory="UNASSIGNED">A new chapter in the long and distinguished history of perovskites is being written with the breakthrough success of metal halide perovskites (MHPs) as solution-processed photovoltaic (PV) absorbers. The curre...

Tohma, T.; Cho, A.; Okazumi, S.; Makino, H.; Shuto, K.; Mochiduki, R.; Matsubara, K.; Gunji, H.; Ochiai, T., 2005: Communicating arcade between the right and left hepatic arteries: evaluation with CT and angiography during temporary balloon occlusion of the right or left hepatic artery. PURPOSE: To evaluate prospectively the relationship between the arterial collateral system at the hepatic hilum and the blood supply to the hilar bile duct by using computed tomography (CT) and angiography during temporary balloon occlusion of the...

Knobloch, L.K.; Delaney, A.L., 2013: Themes of relational uncertainty and interference from partners in depression. This article draws on the relational turbulence model to illuminate the dynamics of depression in romantic relationships using a thematic analysis of online discourse. Three content areas of relational uncertainty were apparent: (a) depression unc...

Wander H.E., 1982: High dose medroxy progesterone acetate and amino glutethimide in metastatic breast cancer a phase ii study. Journal Of Cancer Research & Clinical Oncologyuppl: A18

Blstein, U., 1969: Additional costs incurred in expanding farms. The additional costs incurred by the lease or purchase of additional land are described and quantified as depending on varying conditions. The additional labour costs, machine costs, miscellaneous costs and consequential costs are first explained...

Stark, C.; Steger-Hartmann, T., 2016: Nonclinical Safety and Toxicology. Nonclinical safety pharmacology and toxicology testing of drug candidates assess the potential adverse effects caused by the drug in relation to its intended use in humans. Hazards related to a drug have to be identified and the potential risks at...