The FAB spectra of the adducts trans-Pd(L)2Cl2 (1: L=DIAZEPAM, D=7-chloro-1,3-dihydro-1- methyl-5-phenyl-2H-1,4-benzodiazepin-2-one; 2: L= PRAZEPAM, P=7-chloro-1-(cyclopropylmethyl)-1,3- dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one) and of the cyclometallated derivatives [Pd(L=H)Cl]2 (L=D, 3; L=P, 4), Pd(Ph3P)(L=H)X (L=P, X=Cl, 5; L=D, X=Br, 6), Pd(D)(D=H)Cl (7) have been studied in detail. The main gas-phase fragmentation pathways of 1 and 2 consist in sequential HCl losses, while for compounds 3 and 4 only primary Cl· loss is observed. A peculiar behaviour is observed for 5 and 6, i.e. the lack of protonated molecular ions.
FAB MASS-SPECTROMETRY OF PALLADIUM(II) DERIVATIVES WITH 1,4-BENZODIAZEPIN-2-ONES - EVIDENCE OF THE STABILITY OF CYCLOMETALLATED SPECIES / M. CINELLU, G. MINGHETTI, G. BANDITELLI, A. BANDINI, B. PELLI, P. TRALDI. - In: INORGANICA CHIMICA ACTA. - ISSN 0020-1693. - 161:1(1989), pp. 57-62.
FAB MASS-SPECTROMETRY OF PALLADIUM(II) DERIVATIVES WITH 1,4-BENZODIAZEPIN-2-ONES - EVIDENCE OF THE STABILITY OF CYCLOMETALLATED SPECIES
G. BANDITELLI;A. BANDINI;
1989
Abstract
The FAB spectra of the adducts trans-Pd(L)2Cl2 (1: L=DIAZEPAM, D=7-chloro-1,3-dihydro-1- methyl-5-phenyl-2H-1,4-benzodiazepin-2-one; 2: L= PRAZEPAM, P=7-chloro-1-(cyclopropylmethyl)-1,3- dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one) and of the cyclometallated derivatives [Pd(L=H)Cl]2 (L=D, 3; L=P, 4), Pd(Ph3P)(L=H)X (L=P, X=Cl, 5; L=D, X=Br, 6), Pd(D)(D=H)Cl (7) have been studied in detail. The main gas-phase fragmentation pathways of 1 and 2 consist in sequential HCl losses, while for compounds 3 and 4 only primary Cl· loss is observed. A peculiar behaviour is observed for 5 and 6, i.e. the lack of protonated molecular ions.
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