Two allotropic forms of trans-dichlorobis(creatinine)platinum(II) dihydrate

trans-Bis{2-chloro-6-[(3-hydroxybenzyl)amino]-9-isopropylpurine-κN 7}platinum(II) dimethylformamide disolvate

“…The relatively short intermolecular N6-HÁ Á ÁPt distance of 2.76 Å , in comparison with distances in the range 2.88-2.90 Å observed in trans-(dichloro)-bis(creatinine)platinum(II) (Matos Beja et al, 1991;Ramos Silva et al, 1996) and transbis(2-amino-1-methyl-1,5-dihydro-4H-imidazol-4-one-N 0 )-(dichloro)platinum(II) (Lynch & Duckhouse, 2001), indicates a moderate N-HÁ Á ÁPt interaction operating in (I). The leastsquares planes of the hydroxybenzyl group and purine systems form a dihedral angle of 88.11 (12) .…”

(μ1-Methanolato-κ1O)-μ1-methoxo-κ1O-(μ2-2-amino-1-methyl-5H-imidazol-4-one-κ2N:N′)-hexacarbonyldirhenium(I)

“…For structures of creatinine, see: Bell et al (1995); du Pré & Mendel (1955). For structures with creatinine as a monodentate ligand, see: Canty et al (1979); Mitewa et al (2002);Matos Beja et al (1991);Panfil et al (1995). For a tetranuclear Re I complex, see: Schutte et al (2012a).…”

“…Data collection: APEX2 (Bruker, 2008); cell refinement: SAINT-Plus (Bruker, 2008); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: (Canty et al 1979, Mitewa et al 2002, Matos Beja et al 1991, Panfil et al 1995 but no structure reports are found where creatinine is coordinated to a metal centre in a bidentate fashion. All bond distances and angles of creatinine in this structure compare well with that of the reported structures of the free ligand with the N-C-N angle the only exception with 121° (Bell et al, 1995) and 120° (du Pré & Mendel, 1955) This ligand, creatinine, forms part of an ongoing study where different N,N′ bidentate and N,N′,N′′ tridentate ligands are synthesized and coordinated to the rhenium(I) metal centre (Schutte et al, 2011(Schutte et al, , 2012b(Schutte et al, , 2012c.…”