20520710

Source:http://linkedlifedata.com/resource/pubmed/id/20520710

Download in:

Switch to

Custom View

Named Graph Language Inference

Statements in which the resource exists as a subject.
Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0007382, umls-concept:C0020286, umls-concept:C0023688, umls-concept:C0205171, umls-concept:C0678640, umls-concept:C1378554, umls-concept:C1521991
pubmed:issue	7298
pubmed:dateCreated	2010-6-3
pubmed:abstractText	Chemical reactions inside single crystals are likely to be highly selective, but examples of single crystal to single crystal (SC-SC) transformations are uncommon, because crystallinity is difficult to retain following the rearrangement of atoms in the solid state. The most widely studied SC-SC transformations involve solvent exchange reactions in porous coordination polymers or metal-organic frameworks, which take advantage of the robust polymeric networks of the hosts. Examples of reactions occurring within molecular organic crystals generally involve photo-induced reactions, such as the coupling of alkenes or alkynes within the crystal. For nonporous molecular inorganic or organometallic crystals, single-crystal transformations involving the formation or cleavage of metal-ligand bonds are rare; known examples usually involve ligand loss from the single crystal and reversible religation, a process sometimes accompanied by decay of the single crystal to a microcrystalline powder. Here we report a series of SC-SC transformations that involve the interchange of multiple small gaseous ligands (N(2), CO, NH(3), C(2)H(4), H(2) and O(2)) at an iridium centre in molecular single crystals of a pincer Ir(I) complex. The single crystal remains intact during these ligand-exchange reactions, which occur within the crystal and do not require prior ligand extrusion. We reveal a selective catalytic transformation within a nonporous molecular crystal: pincer iridium single crystals ligated with nitrogen, ethylene or hydrogen show selective hydrogenation of ethylene relative to propylene (25:1) when surface sites are passified by CO.
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/0410462
pubmed:status	PubMed-not-MEDLINE
pubmed:month	Jun
pubmed:issn	1476-4687
pubmed:author	pubmed-author:BrookhartMauriceM, pubmed-author:HuangZhengZ, pubmed-author:WhitePeter SPS
pubmed:issnType	Electronic
pubmed:day	3
pubmed:volume	465
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	598-601
pubmed:year	2010
pubmed:articleTitle	Ligand exchanges and selective catalytic hydrogenation in molecular single crystals.
pubmed:affiliation	Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, USA.
pubmed:publicationType	Journal Article, Research Support, U.S. Gov't, Non-P.H.S.