Mass Spectrometry for Structure Determination. Simple Nitrogen Heterocycles

1964 ◽  
Vol 29 (7) ◽  
pp. 2065-2066 ◽  
Author(s):  
A. L. Jennings ◽  
James E. Boggs
Keyword(s):  
Mass Spectrometry ◽  
Structure Determination ◽  
Nitrogen Heterocycles

Syntheses, Spectroscopy And Crystal Structures Of (R)-N-(1-Aryl-Ethyl)Salicylaldimines And [Rh{(R)-N-(1-Aryl-Ethyl)Salicylaldiminato}(η4-Cod)] Complexes

2007 ◽  
Vol 62 (6) ◽  
pp. 807-817 ◽  
Author(s):  
Mohammed Enamullah ◽  
A.K.M. Royhan Uddin ◽  
Anne-Christine Chamayou ◽  
Christoph Janiak
Keyword(s):  
Mass Spectrometry ◽  
Schiff Base ◽  
Schiff Bases ◽  
Structure Determination ◽  
Chelate Ring ◽  
Optical Rotation ◽  
X Ray ◽  
Mononuclear Complexes ◽  
Chiral Schiff Base ◽  
C Nmr

Condensation of salicylaldehyde with enantiopure (R)-(1-aryl-ethyl)amines yields the enantiopure Schiff bases (R)-N-(1-aryl-ethyl)salicylaldimine (HSB*; aryl = phenyl, 2-methoxyphenyl, 3- methoxyphenyl, 4-methoxyphenyl (4), 4-bromophenyl (5), 2-naphthyl). These Schiff bases readily react with dinuclear (acetato)(η4-cycloocta-1,5-diene)rhodium(I), [Rh(μ-O2CMe)(η4-cod)]2, to afford the mononuclear complexes, cyclooctadiene-((R)-N-(1-aryl-ethyl)salicylaldiminato-κ2N,O)- rhodium(I), [Rh(SB∗)(η4-cod)] (SB* = deprotonated chiral Schiff base = salicylaldiminate; aryl = phenyl (7), 2-methoxyphenyl, 4-methoxyphenyl, 4-bromophenyl, 2-naphthyl). The complexes have been characterized by IR, UV/vis, 1H/13C NMR and mass spectrometry, optical rotation as well as by single-crystal X-ray structure determination for 4, 5 and 7. The structure of 5 shows C-Br· · ·π contacts. Compound 7 is only the second example of a Rh(η4-cod) complex with a six-membered Rh-N,O-chelate ring

scholarly journals Connectivity Inference in Mass Spectrometry Based Structure Determination

2013 ◽  
pp. 289-300 ◽  
Author(s):  
Deepesh Agarwal ◽  
Julio-Cesar Silva Araujo ◽  
Christelle Caillouet ◽  
Frederic Cazals ◽  
David Coudert ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Structure Determination ◽  
Connectivity Inference

Crystal structure of 3-chlorobenzo[b]thiophene-2-carbonyl chloride

2009 ◽  
Vol 2009 (7) ◽  
pp. 437-439 ◽  
Author(s):  
Sara Tarighi ◽  
Alireza Abbasi ◽  
Sara Zamanian ◽  
Alireza Badiei ◽  
Mahmood Ghoranneviss
Keyword(s):  
Crystal Structure ◽  
Mass Spectrometry ◽  
Cinnamic Acid ◽  
Thionyl Chloride ◽  
Structure Determination ◽  
X Ray ◽  
Packing Structure ◽  
H Nmr ◽  
Carbonyl Chloride ◽  
C Nmr

3-Chlorobenzo[b]thiophene-2-carbonyl chloride was synthesised from cinnamic acid and thionyl chloride. The single crystal X-ray structure determination confirmed the earlier proposed structure and the product was further characterised by 1H NMR, 13C NMR and mass spectrometry. The X-ray structure determination revealed two sets of symmetry related molecules along the b-axis that are loosely connected by relatively weak CH…π ( 3.626, 3.628 Å) interactions, giving rise to two infinite chains. The packing structure is dominated by Van der Waals forces between these chains. No significant π–π interactions are found in the crystal structure.

Fast-atom-bombardment mass-spectrometry for carbohydrate-structure determination

1983 ◽  
Vol 115 ◽  
pp. 41-52 ◽  
Author(s):  
Anne Dell ◽  
Howard R. Morris ◽  
Heinz Egge ◽  
Hubertus von Nicolai ◽  
Gérard Strecker
Keyword(s):  
Mass Spectrometry ◽  
Structure Determination ◽  
Fast Atom Bombardment ◽  
Carbohydrate Structure

Structure determination of a cyclic tetrapeptide : tentoxine by mass spectrometry using fast atom bombardment for ionization

1982 ◽  
Vol 23 (50) ◽  
pp. 5263-5266 ◽  
Author(s):  
J.L. Aubagnac ◽  
F.M. Devienne ◽  
R. Combarieu
Keyword(s):  
Mass Spectrometry ◽  
Structure Determination ◽  
Fast Atom Bombardment ◽  
Cyclic Tetrapeptide

Fast atom bombardment and tandem mass spectrometry for structure determination of steroid and flavonoid glycosides

1986 ◽  
Vol 155 (2) ◽  
pp. 286-307 ◽  
Author(s):  
Frank W. Crow ◽  
Kenneth B. Tomer ◽  
James H. Looker ◽  
Michael L. Gross
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Structure Determination ◽  
Fast Atom Bombardment ◽  
Flavonoid Glycosides ◽  
Tandem Mass
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