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Showing 1 to 12 of 230 entries
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Dense, Regular GaAs Nanowire Arrays by Catalyst-Free Vapor Phase Epitaxy for Light Harvesting.

ACS applied materials & interfaces

Jin J, Stoica T, Trellenkamp S, Chen Y, Anttu N, Migunov V, Kawabata RM, Buenconsejo PJ, Lam YM, Haas F, Hardtdegen H, Grützmacher D, Kardynał BE.
PMID: 27504951
ACS Appl Mater Interfaces. 2016 Aug 31;8(34):22484-92. doi: 10.1021/acsami.6b05581. Epub 2016 Aug 19.

Density dependent growth and optical properties of periodic arrays of GaAs nanowires (NWs) by fast selective area growth MOVPE are investigated. As the period of the arrays is decreased from 500 nm down to 100 nm, a volume growth...

From the parent phosphinidene-carbene adduct NHC = PH to cationic P4-rings and P2-cycloaddition products.

Dalton transactions (Cambridge, England : 2003)

Beil A, Gilliard RJ, Grützmacher H.
PMID: 26400646
Dalton Trans. 2016 Feb 07;45(5):2044-52. doi: 10.1039/c5dt03014e. Epub 2015 Sep 23.

Reactions of the parent phosphinidene-carbene adduct (Dipp)NHC = PH with chlorophosphanes are reported herein. The obtained (Dipp)NHC-substituted chlorodiphosphanes, (Dipp)NHC = P-PClR, and the formation of their cationic derivatives, [(Dipp)NHC-P = PR](+), were also explored. Depending on the steric demand...

Nitrous Oxide as a Hydrogen Acceptor for the Dehydrogenative Coupling of Alcohols.

Angewandte Chemie (International ed. in English)

Gianetti TL, Annen SP, Santiso-Quinones G, Reiher M, Driess M, Grützmacher H.
PMID: 26693955
Angew Chem Int Ed Engl. 2016 Jan 26;55(5):1854-8. doi: 10.1002/anie.201509288. Epub 2015 Dec 22.

The oxidation of alcohols with N2O as the hydrogen acceptor was achieved with low catalyst loadings of a rhodium complex that features a cooperative bis(olefin)amido ligand under mild conditions. Two different methods enable the formation of either the corresponding...

Bis(mesitoyl)phosphinic acid: photo-triggered release of metaphosphorous acid in solution.

Chemical communications (Cambridge, England)

Fast DE, Zalibera M, Lauer A, Eibel A, Schweigert C, Kelterer AM, Spichty M, Neshchadin D, Voll D, Ernst H, Liang Y, Dietliker K, Unterreiner AN, Barner-Kowollik C, Grützmacher H, Gescheidt G.
PMID: 27431207
Chem Commun (Camb). 2016 Aug 02;52(64):9917-20. doi: 10.1039/c6cc05219c.

Bis(mesitoyl)phosphinic acid and its sodium salt display a unique photo-induced reactivity: both derivatives stepwise release two mesitoyl radicals and, remarkably, metaphosphorous acid (previously postulated as transient species in the gas phase), providing a new phosphorus-based reagent.

SiGe quantum dot crystals with periods down to 35 nm.

Nanotechnology

Dais C, Mussler G, Fromherz T, Müller E, Solak HH, Grützmacher D.
PMID: 26031338
Nanotechnology. 2015 Jan 26;26(25):255302. doi: 10.1088/0957-4484/26/25/255302. Epub 2015 Jun 02.

By combining extreme ultraviolet interference lithography with Si/Ge molecular beam epitaxy, densely packed quantum dot (QD) arrays with lateral periodicities down to 35 nm are realized. The QD arrays are featured by perfect alignment and remarkably narrow size distribution....

Low-valent iron: an Fe(I) ate compound as a building block for a linear trinuclear Fe cluster.

Chemical communications (Cambridge, England)

Lichtenberg C, Viciu L, Vogt M, Rodríguez-Lugo RE, Adelhardt M, Sutter J, Khusniyarov MM, Meyer K, de Bruin B, Bill E, Grützmacher H.
PMID: 26221636
Chem Commun (Camb). 2015 Sep 21;51(73):13890-3. doi: 10.1039/c5cc04908c.

A low-valent trinuclear iron complex with an unusual linear Fe(I)-Fe(II)-Fe(I) unit is presented. It is accessed in a rational approach using a salt metathesis reaction between a new anionic Fe(I) containing heterocycle and FeCl2. Its electronic structure was studied...

Ru(II)-hydride-trop complexes: X-ray single-crystal determination and quantum-chemical calculations.

Acta crystallographica. Section C, Crystal structure communications

Santiso-Quinones G, Rodriguez-Lugo R, Sacchetti V, Grützmacher H.
PMID: 24311484
Acta Crystallogr C. 2013 Dec 15;69:1421-6. doi: 10.1107/S0108270113024505. Epub 2013 Nov 08.

As part of our search for catalytically active Ru(II)-hydride complexes, we have synthesized and crystallographically characterized three different ruthenium species, namely dihydrido[(SR)-(10,11-η)-N-(pyridin-2-ylmethyl-κN)-5H-dibenzo[a,d]cyclohepten-5-amine](triphenylphosphane-κP)ruthenium(II) tetrahydrofuran monosolvate, [RuH2(C21H18N2)(C18H15P)]·C4H8O or (SR)-[Ru(II)(H)2{N-(pyridin-2-ylmethyl)tropNH}(PPh3)]·THF, (1), chlorido{(1SR,2RS)-N,N'-bis[(10,11-η)-5H-dibenzo[a,d]cyclohepten-5-amine]ethane-1,2-diamine-κ(2)N,N'}hydridoruthenium(II) dimethoxyethane hemisolvate, [RuClH(C32H28N2)]·0.5C4H10O2 or (1SR,2RS)-[Ru(II)(H)(Cl){tropNH(CH2)2HNtrop}]·DME, (2), and chlorido{(1SR,2RS)-N,N'-bis[(10,11-η)-5H-dibenzo[a,d]cyclohepten-5-amine]propane-1,3-diamine-κ(2)N,N'}hydridoruthenium(II), [RuClH(C33H30N2)] or...

Phosphaketenes as building blocks for the synthesis of triphospha heterocycles.

Chemistry (Weinheim an der Bergstrasse, Germany)

Heift D, Benkő Z, Grützmacher H.
PMID: 25055973
Chemistry. 2014 Sep 01;20(36):11326-30. doi: 10.1002/chem.201403419. Epub 2014 Jul 23.

Unsaturated phosphorus compounds, such as phosphaalkenes and phosphaalkynes, show a versatile reactivity in cycloadditions. Although phosphaketenes (R-P=C=O) have been known for three decades, their chemistry has remained limited. Herein, we show that heteroatom-substituted phosphaketenes, R(3) E-P=C=O (E=Si, Sn), are...

Autoshaping in the rat: conditioned licking response to a stimulus that signals sucrose reinforcement.

Behavioural processes

Reilly S, Grutzmacher RP.
PMID: 12090942
Behav Processes. 2002 Jul 31;59(1):15-24. doi: 10.1016/s0376-6357(02)00044-x.

The present experiments were designed to determine if repeated presentations of an empty sipper tube (the conditioned stimulus or CS) with the response-independent delivery of a sucrose solution (the unconditioned stimulus or US) from a second spout results in...

BABAR-Phos Rhodium Complexes: Reversible Metal Insertion into a Three-Membered Ring and Catalytic Hydroborations This work was supported by the ETH Zürich and the National Swiss Science Foundation.

Angewandte Chemie (International ed. in English)

Liedtke J, Rüegger H, Loss S, Grützmacher H.
PMID: 10941108
Angew Chem Int Ed Engl. 2000 Jul 17;39(14):2478-2481. doi: 10.1002/1521-3773(20000717)39:14<2478::aid-anie2478>3.0.co;2-g.

No abstract available.

Analysis of the metallic phase of two-dimensional holes in SiGe in terms of temperature dependent screening.

Physical review letters

Senz V, Ihn T, Heinzel T, Ensslin K, Dehlinger G, Grutzmacher D, Gennser U.
PMID: 11060637
Phys Rev Lett. 2000 Nov 13;85(20):4357-60. doi: 10.1103/PhysRevLett.85.4357.

We find that temperature dependent screening can quantitatively explain the metallic behavior of the resistivity on the metallic side of the so-called metal-insulator transition in p-SiGe. Interference and interaction effects exhibit the usual insulating behavior which is expected to...

Strong P=P pi Bonds: The First Synthesis of a Stable Phosphanyl Phosphenium Ion.

Angewandte Chemie (International ed. in English)

Loss S, Widauer C, Grützmacher H.
PMID: 10602186
Angew Chem Int Ed Engl. 1999 Nov 15;38(22):3329-3331. doi: 10.1002/(sici)1521-3773(19991115)38:22<3329::aid-anie3329>3.0.co;2-q.

A 35-fold excess of methyl triflate (2) is required to quantitively prepare 3, the first phosphanyl phosphenium ion, from diphosphene 1. Experimental data and calculations indicate that the P=P bond becomes stronger upon alkylation.

Showing 1 to 12 of 230 entries