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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Biol+Inorg+Chem
2014 ; 19
(4-5
): 667-74
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Reinterpretation of the vibrational spectroscopy of the medicinal bioinorganic
synthon c,c,t- Pt(NH3)2Cl2(OH)2
#MMPMID24515615
Johnstone TC
; Lippard SJ
J Biol Inorg Chem
2014[Jun]; 19
(4-5
): 667-74
PMID24515615
show ga
The Pt(IV) complex c,c,t-[Pt(NH3)2Cl2(OH)2] is an important intermediate in the
synthesis of Pt(IV) anticancer prodrugs and has been investigated as an
anticancer agent in its own right. An analysis of the vibrational spectroscopy of
this molecule was previously reported (Faggiani et al., Can. J. Chem. 60:529,
1982), in which crystallographic determination of the structure of the complex
permitted a site group approach. The space group, however, was incorrectly
assigned. In the present study we have redetermined at high resolution crystal
structures of c,c,t-[Pt(NH3)2Cl2(OH)2] and c,c,t-[Pt(NH3)2Cl2(OH)2]·H2O2, which
makes possible discussion of the effect of hydrogen bonding on the N-H and O-H
vibrational bands. The correct crystallographic site symmetry of the platinum
complex in the c,c,t-[Pt(NH3)2Cl2(OH)2] structure is used to conduct a new
vibrational analysis using both group-theoretical and modern density functional
theory methods. This analysis reveals the nature and symmetry of the "missing
band" described in the original publication and suggests a possible explanation
for its disappearance.