Results 171 to 180 of about 35,384 (204)

Coordination Properties of 2,5-Dimesitylpyridine: An Encumbering and Versatile Ligand for Transition-Metal Chemistry

Inorganic Chemistry, 2011
To overcome the unfavorable steric pressures associated with 2,6-disubstitution in encumbering pyridine ligands, the coordination chemistry of a 2,5-disubstituted variant, namely, 2,5-dimesitylpyridine (2,5-Mes(2)py), is reported. This diaryl pyridine shows good binding ability to a range of transition-metal fragments with varying formal oxidation ...
Julia M, Stauber, Andrew L, Wadler, Curtis E, Moore, Arnold L, Rheingold, Joshua S, Figueroa   +4 more
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Synthesis and Spectroscopic Properties of Iron(H) Complex with Sterically Encumbered Thiolate Ligand: 2,4,6-Triphenylbenzenethiolate

Spectroscopy Letters, 1998
Abstract Novel iron(II) complex of 2,4,6-triphenylbenzenethiolate (tpbt) was synthesized by ligand exchange reaction of (Et4N)2[FeII(S-t-Bu)4] with tpbt-H. The complex shows absorption maxima at 277 nm (36500 M−1cm−1) and 367 nm (22800 M−1 cm−1), and Fe2+/Fe3+ redox potential at-0.78 V vs SCE in acetonitrile.
Wei-Yin Sun, Norikazu Ueyama, Akira Nakamura   +2 more
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Sterically encumbered poly(arylene ether)s containing spiro‐annulated substituents: Synthesis and thermal properties

Journal of Polymer Science Part A: Polymer Chemistry, 2010
AbstractFour novel 2‐trifluoromethyl‐activated bisfluoro monomers have been synthesized successfully using a Suzuki‐coupling reaction of 3‐trifluoromethyl‐4‐fluoro phenyl boronic acid with 2,7‐dibromofluorene with varied pendants. Four monomers were converted to a series of fluorene‐based poly(arylene ether)s with pendants by nucleophilic displacement ...
Wen Y. Huang, M. Y. Chang, Y. K. Han, P. T. Huang   +3 more
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Structure–Property Relationships and ¹O₂ Photosensitisation in Sterically Encumbered Diimine Pt^II Acetylide Complexes

Chemistry – A European Journal, 2013
AbstractA series of sterically encumbered [Pt(L)(σ‐acetylide)2] complexes were prepared in which L, a dendritic polyaromatic diimine ligand, was held constant (L=1‐(2,2′‐bipyrid‐6‐yl)‐2,3,4,5‐tetrakis(4‐tert‐butylphenyl)benzene) and the cis ethynyl co‐ligands were varied.
Deanne, Nolan, Belén, Gil, Longsheng, Wang, Jianzhang, Zhao, Sylvia M, Draper   +4 more
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Coordination and structural properties of encumbering 6-mesityl-2-picolinate complexes

Dalton Transactions, 2012
In an effort to enforce a sterically hindered environment in transition-metal and main-group 2-picolinate complexes, the synthesis of the encumbering derivative 6-mesityl-2-picolinate ((Mes)pic) is presented. The coordination and structural properties of (Mes)pic are demonstrated with a range of transition-metal and main-group fragments. The 6-position
Patrick W, Smith, Curtis E, Moore, Arnold L, Rheingold, Joshua S, Figueroa   +3 more
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Crystal structures and magnetic properties of a sterically encumbered dithiadiazolyl radical, 2,4,6-(F3C)3C6H2CNSSN˙

Chemical Communications, 2005
The sterically protected dithiadiazolyl radical (F3C)3C6H2CNSSN. (1) crystallises in two polymorphs: 1alpha, comprised of monomeric units and 1beta, containing a mixture of both pi*-pi* dimers and S = (1/2) monomers; whilst both polymorphs exhibit similar structure-directing motifs, the variation in packing leads to different magnetic behaviour.
Antonio, Alberola, Caroline S, Clarke, Delia A, Haynes, Sofia I, Pascu, Jeremy M, Rawson   +4 more
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Synthesis and Characterization of Sterically Encumbered Derivatives of Aluminum Hydrides and Halides:  Assessment of Steric Properties of Bulky Terphenyl Ligands

Inorganic Chemistry, 1996
The synthesis and characterization of several sterically encumbered monoterphenyl derivatives of aluminum halides and aluminum hydrides are described. These compounds are [2,6-Mes(2)C(6)H(3)AlH(3)LiOEt(2)](n)() (1), (Mes = 2,4,6-Me(3)C(6)H(2)-), 2,6-Mes(2)C(6)H(3)AlH(2)OEt(2) (2), [2,6-Mes(2)C(6)H(3)AlH(2)](2) (3), 2,6-Mes(2)C(6)H(3)AlCl(2)OEt(2) (4), [
Rudolf J., Wehmschulte, Warren J., Grigsby, Berthold, Schiemenz, Ruth A., Bartlett, Philip P., Power   +4 more
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Formation by S RN 1 Reactions and 1 H N.M.R. Properties of Sterically Encumbered 2,4,6-Trialkylphenyl p -Nitrobenzyl Sulfides.

Australian Journal of Chemistry, 2000
Sterically hindered p -nitrobenzylic chlorides (1) and (2) react with the sodium salts of 2,4,6-trialkylbenzenethiols (3a)–(5a) by the SRN1 reaction to give good yields of the corresponding p -nitrobenzylic aryl sulfides (6)–(10). For example, the reaction of sodium 2,4,6-triisopropylbenzenethiolate (4b) with a-t-butyl-a-methyl- p -nitrobenzyl chloride
Kai Look, Robert K. Norris
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Synthesis and properties of a sterically encumbered poly(thienylene vinylene): poly[E-1,2-(4,4prime-dihexyl-2,2prime-dithienyl)ethylene]

Canadian Journal of Chemistry, 1998
Electrically conducting poly[E-1,2-(4,4prime-dihexyl-2,2prime-dithienyl)ethylene] was synthesized and structurally characterized by UV-visible, 1H NMR, and FTIR spectroscopy. The head-to-head arrangement of the alkylthiophene dyads directly affects the UV-visible, photoluminescence, and electroluminescence maxima of the polymer.
Jimmy Lowe, Carl Bartels, Steven Holdcroft   +2 more
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Forecasting Auction Sale Ratios by Type of Encumbered Properties in Real Estate Auctions : A Time Series Approach Using the ARIMA Model

Korea Real Estate Society
This study aims to quantitatively identify the risk premiums and legal–economic uncertainties associated with purchaser-assumed encumbrances in real estate auctions. A nationwide dataset of 405,340 auctioned properties between 2015 and 2024 was directly collected to provide time-series information on sale ratios.
Hyun-Seok Lee, Young-Hwan Lim
openaire   +2 more sources