scholarly journals Exploring the Lewis basicity of the metalloligand [Pt2(µ-Se)2(PPh3)4] on metal substrates by electrospray mass spectrometry. Synthesis, characterization and structural studies of new platinum selenido phosphine complexes containing the {Pt2Se2} core

2001 ◽  
pp. 328-336 ◽  
Author(s):  
Jeremy S. L. Yeo ◽  
Jagadese J. Vittal ◽  
William Henderson ◽  
T. S. Andy Hor
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Mass Spectrometry ◽  
Structural Studies ◽  
Metal Substrates ◽  
Phosphine Complexes

Synthesis and Structural Studies of Tetrahedral [M(Ph2P(CH=CH)PPh2)2]BPh4 and [M(Ph2P(CH2)nPPh2)2]BPh4 (n = 2, 3) Complexes for M = Copper(I), Silver(I), and Gold(I)

2012 ◽  
Vol 65 (7) ◽  
pp. 811 ◽  
Author(s):  
Peter C. Healy ◽  
Bradley T. Loughrey ◽  
Michael L. Williams
Keyword(s):  
Mass Spectrometry ◽  
Nmr Spectroscopy ◽  
Structural Analysis ◽  
Single Crystal ◽  
Copper Complex ◽  
Electrospray Mass Spectrometry ◽  
Structural Studies ◽  
Space Group ◽  
X Ray ◽  
Bond Lengths

Tetraphenylborate salts of the 1 : 2 tetrahedral bis(bidentate) complexes of copper(i), silver(i), and gold(i) with cis-bis(diphenylphosphino)ethene (dppey), [M(Ph2PCH=CHPPh2)2]BPh4, cis-bis(diphenylphosphino)ethane (dppe), and cis-bis(diphenylphosphino)propane (dppp), [M(Ph2P–R–PPh2)2]BPh4 (R = (CH2)2, (CH2)3), have been prepared and characterized by NMR spectroscopy, electrospray mass spectrometry, and single crystal X-ray structural analysis at 200 K. Structures of the dppey complexes as acetone solvates show the Cu and Ag complexes to be isostructural with the previously reported Au complex, crystallizing in space group P 21/n with a ~ 25.5, b ~ 15.6, and c ~ 34.2 Å, and β ~ 103°. Structures of the dppe complexes show the copper complex to crystallize in the chiral space group P21 with a 11.8954(5), b 20.1904(5), and c 14.8999(5) Å, and β 111.366(5)°. The Ag and Au complexes are isostructural, crystallizing in space group P21/c with a ~ 17.8, b ~ 17.6, and c ~ 20.9 Å, and β ~ 107°. Structures of the dppp complexes show the copper complex to crystallize in space group P21/c with a 17.8399(4), b 19.8803(4), and c 18.7165(3) Å, and β 102.197(2)°. The Ag and Au complexes are isostructural, crystallizing in space group P21/n with a ~ 17.7, b ~ 18.6, and c ~ 19.6 Å, and β ~ 100°. Across the three series of complexes, the M–P bond lengths increase in the order Cu < Au < Ag with Cu–P = 2.281(3)–2.314(1) Å, average 2.30(1) Å; Au–P = 2.363(1)–2.4322(8) Å, average 2.40(2) Å, and Ag–P = 2.445(1)–2.5303(5) Å average 2.49(2) Å.

scholarly journals Structural studies on a lipoarabinogalactan of Crithidia fasciculata

1996 ◽  
Vol 313 (3) ◽  
pp. 963-971 ◽  
Author(s):  
Pascal SCHNEIDER ◽  
Achim TREUMANN ◽  
Kenneth G. MILNE ◽  
Malcolm J. McCONVILLE ◽  
Nicole ZITZMANN ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Mass Spectrometry ◽  
Leishmania Major ◽  
Hydrophobic Interaction Chromatography ◽  
Gas Chromatography Mass Spectrometry ◽  
Structural Studies ◽  
Donor Molecule ◽  
Membrane Anchor ◽  
Crithidia Fasciculata ◽  
Trypanosomatid Parasites

The monosaccharide D-arabinopyranose has only been found in glycoconjugates of the trypanosomatid parasites Leishmania major, Endotrypanum schaudinni and Crithidia fasciculata. The donor molecule for the relevant arabinosyltransferases is known to be GDP-α-D-Arap in L. major and C. fasciculata, and the latter organism is being used to study the biosynthesis of GDP-α-D-Arap. In this study, we describe the structure of the terminal product of arabinose metabolism in C. fasciculata, namely lipoarabinogalactan. This molecule was purified by hydrophobic-interaction chromatography and studied by a variety of techniques, including gas chromatography–mass spectrometry, electrospray mass spectrometry and chemical and enzymic digestions. These data show that lipoarabinogalactan contains a previously described D-arabino-D-galactan polysaccharide component covalently attached to a glycosylphosphatidylinositol type of membrane anchor that is similar to, but not identical with, that found in the lipophosphoglycans of the Leishmania.

The Application of Electrospray Mass Spectrometry for Structural Studies on a Tetrasaccharide Monopeptide from the Urine of a Patient with α-N-Acetylhexosaminidase Deficiency

1994 ◽  
Vol 13 (3) ◽  
pp. 447-456 ◽  
Author(s):  
Jasna Peter-Kataliníc ◽  
Kerstin Williger ◽  
Heinz Egge ◽  
Brian Green ◽  
Franz-Georg Hanisch ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Mass Spectrometry ◽  
Structural Studies

Potential of electrospray mass spectrometry for structural studies ofO-Glycoamino acids and -peptides with multiple α2,6-Sialosyl-Tn glycosylation

1994 ◽  
Vol 29 (12) ◽  
pp. 747-752 ◽  
Author(s):  
J. Peter-Katalinić ◽  
A. Ashcroft ◽  
B. Green ◽  
F.-G. Hanisch ◽  
Y. Nakahara ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Mass Spectrometry ◽  
Structural Studies

Analysis of Trace Level Perchlorate in Drinking Water and Ground Water by Electrospray Mass Spectrometry

1998 ◽  
Author(s):  
Rebecca A. Clewell ◽  
Wayne T. Brashear ◽  
David T. Tsui ◽  
Sanwat Chaudhuri ◽  
Rachel S. Cassady
Keyword(s):  
Mass Spectrometry ◽  
Drinking Water ◽  
Ground Water ◽  
Electrospray Mass Spectrometry ◽  
Trace Level

Determination of the endogenous phosphorylation state of B-50/GAP-43 and neurogranin in different brain regions by electrospray mass spectrometry

FEBS Letters ◽  
1996 ◽  
Vol 389 (3) ◽  
pp. 309-313 ◽  
Author(s):  
Monica Di Luca ◽  
Lucia Pastorino ◽  
Vittorio Raverdino ◽  
Pierre N.E. De Graan ◽  
Antonio Caputi ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Electrospray Mass Spectrometry ◽  
Brain Regions ◽  
Phosphorylation State
Sign in / Sign up

Export Citation Format

Share Document