ION-SPRAY TANDEM MASS-SPECTROMETRY OF SUPRAMOLECULAR COORDINATION-COMPLEXES

被引:94
作者
HOPFGARTNER, G
PIGUET, C
HENION, JD
机构
[1] UNIV GENEVA,DEPT INORGAN ANALYT & APPL CHEM,CH-1211 GENEVA 4,SWITZERLAND
[2] CORNELL UNIV,NEW YORK STATE COLL VET MED,DIAGNOST LAB,ITHACA,NY 14853
关键词
D O I
10.1016/1044-0305(94)80007-3
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Double-helical [M2L2]n+, triple-helical [M2L3]n+, and toroidal [M3L3]n+ (M = Cu, Co, Fe, Ni, La, Eu, Gd, Tb, or Lu) supramolecular complexes have been fully characterized by ion spray mass spectrometry (IS-MS). The IS-MS spectra from pure acetonitrile solutions reflect the nature of the cations present in solution with conservation of the charge state and allow an efficient qualitative speciation of the compounds. The mass spectrometry results can be correlated with other powerful techniques (nuclear magnetic resonance and electronic spectroscopy) for the characterization of supramolecular complexes in solution. Structural information is obtained by collision-induced dissociation, which strongly depends on the metal ions used in the supramolecular complexes and on the various connectivities and topologies of the ligands. When the ligand contains 3,5-dimethoxybenzyl groups bound to the benzimidazole rings, the partial fragmentation of the complexes is associated with a decrease of the total charge of the complexes and the appearance of the characteristic fragment at m/z 151 that corresponds to the 3,5-dimethoxybenzyl cation. A detailed analysis of the fragmentation pathways of these supramolecular complexes suggests that the metal-nitrogen coordination bonds are very strong in the gas phase.
引用
收藏
页码:748 / 756
页数:9
相关论文
共 43 条
[1]   CO2-LASER DESORPTION AND MULTIPHOTON IONIZATION OF TRIS(2,2'-BIPYRIDYL)RUTHENIUM [J].
BEAVIS, R ;
LINDNER, J ;
GROTEMEYER, J ;
ATKINSON, IM ;
KEENE, FR ;
KNIGHT, AEW .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1988, 110 (22) :7534-7535
[2]  
BERNARDINELLI G, 1992, ANGEW CHEM INT EDIT, V31, P1622
[3]   MECHANISM OF ELECTROSPRAY MASS-SPECTROMETRY - ELECTROSPRAY AS AN ELECTROLYSIS CELL [J].
BLADES, AT ;
IKONOMOU, MG ;
KEBARLE, P .
ANALYTICAL CHEMISTRY, 1991, 63 (19) :2109-2114
[4]   STUDIES OF ALKALINE-EARTH AND TRANSITION-METAL M++ GAS-PHASE ION CHEMISTRY [J].
BLADES, AT ;
JAYAWEERA, P ;
IKONOMOU, MG ;
KEBARLE, P .
JOURNAL OF CHEMICAL PHYSICS, 1990, 92 (10) :5900-5906
[5]   ION SPRAY INTERFACE FOR COMBINED LIQUID CHROMATOGRAPHY/ATMOSPHERIC PRESSURE IONIZATION MASS-SPECTROMETRY [J].
BRUINS, AP ;
COVEY, TR ;
HENION, JD .
ANALYTICAL CHEMISTRY, 1987, 59 (22) :2642-2646
[6]   FAST ATOM BOMBARDMENT MASS-SPECTROMETRY OF NEUTRAL METHANIDE AND IONIC CARBENE PLATINUM(II) DERIVATIVES [J].
CETINI, G ;
OPERTI, L ;
VAGLIO, GA ;
BANDINI, AL ;
BANDITELLI, G ;
MINGHETTI, G .
ORGANIC MASS SPECTROMETRY, 1989, 24 (07) :479-484
[7]   SOLVENT-DERIVED METAL-OXIDES IN ELECTROSPRAY MASS-SPECTROMETRY OF METAL SALT-SOLUTIONS [J].
CHENG, ZL ;
SIU, KWM ;
GUEVREMONT, R ;
BERMAN, SS .
ORGANIC MASS SPECTROMETRY, 1992, 27 (12) :1370-1376
[8]   THE APPLICATION OF ELECTROSPRAY MASS-SPECTROMETRY TO IONIC INORGANIC AND ORGANOMETALLIC SYSTEMS [J].
COLTON, R ;
TRAEGER, JC .
INORGANICA CHIMICA ACTA, 1992, 201 (02) :153-155
[9]   MOLECULAR HELICITY IN INORGANIC COMPLEXES - BINUCLEAR AND TRINUCLEAR COMPLEXES OF 2,2'-6',2''-6'',2'''-6''',2''''-6'''',2'''''-SEXIPYRIDINE AND THE CRYSTAL AND MOLECULAR-STRUCTURE OF BIS(MU-2,2'-6',2''-6'',2'''-6''',2''''-6'''',2'''''-SEXIPYRIDINE-KAPPA-3N,N',N''-KAPPA-3N''',N'''',N''''')DICADMIUM HEXAFLUOROPHOSPHATE-ACETONITRILE (1/4) [J].
CONSTABLE, EC ;
WARD, MD ;
TOCHER, DA .
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1991, (07) :1675-1683
[10]   OLIGOPYRIDINES AS HELICATING LIGANDS [J].
CONSTABLE, EC .
TETRAHEDRON, 1992, 48 (46) :10013-10059