Dichlorobis(creatinine)cadmium(II)

Abstract

The structure of bis(2-amino-1,5-dihydro-1-methyl-4H-imidazol-4-one-N3)dichlorocadmium(II), [CdCI2-(C4H7N30)2], consists of four-coordinate molecular units with the metal centre bonded to two imidazole N(3) atoms and two C1 ions. The coordination about the Cd atom is pseudo-tetrahedral. The amino H atom is hydrogen bonded to the carbonyl O atom of an adjacent molecule. CommentCreatinine (2-amino-1,5-dihydro-1-methyl-4H-imidazol-4-one) is the anhydride form of creatine and is produced in muscle, by dehydration of creatine phosphate, as the

Synthesis, spectral characterization, thermal analysis and DFT computational studies of 2-(1H-indole-3-yl)-5-methyl-1H-benzimidazole and their Cu(II), Zn(II) and Cd(II) complexes

“…The crystallographic structures of 2-(1H-indol-3-yl)-5-methyl-1H-benzo[d]imidazole and their Cu(II), Zn(II) and Cd(II) complexes is not available in the literature, therefore we compared some bond lengths and bond angles with X-ray diffraction data of M-N and N-C as a general. The optimized bond lengths and bond angles of title ligand and complexes are in good agreement with X-ray data [22][23][24]. N25-C26 in L-Zn complex is shorter and C25-N14 is longer than as expected (1.368 and 1.389 Å, respectively).…”

Bis(creatininium) tetrachloridocadmate(II)

“…The cadmium is coordinated to four Cl atoms and one O atom forming a distorted trigonal bipyramid CdX 4 O. As can be seen in Table 1, three of the four Cd1-Cl bond distances (2.4571 (5), 2.4596 (4) and 2.4627 (4) Å) are similar to those found in the dichlorobis(creatinine)cadmium(II) (Okabe et al, 1995) and significantly shorter than the axial Cd•••Cl3 distance (2.5678 (4) Å) witch is in trans position to the O atom (d Cd1-O = 2.6854 (13) Å and 0.1 Å longer than the other chlorine atoms. In the trigonal bipyramid CdCl4O, the displacement of Cd towards Cl3 from the equatorial plane defined by Cl1; Cl2 and Cl4 atoms is 0.2574 (2) Å.…”

Ternary copper(II) complexes with N-carboxymethyl-l-prolinato(2−) ion and imidazole or creatinine: A comparative study of the interligand interactions influencing the molecular recognition and stability

“…(1) In most of these cases neutral crea binds the metal through the N heterocyclic donor (Scheme 2(a)) [11,[13][14][15][16][17][18][19][20][22][23][24][25][26][27][28][29][30]. (2) Other unidentate mode for neutral crea is known via the O-exocyclic coordination as for the NiðenÞ 2þ 2 complex unit (Scheme 2(b)) [11].…”

“…Crea complexes of known structure include a series of compounds with general formula [M II (crea) 2 L 2 ] where M = Cu [13], Zn [16], Cd [18], Pd [23,24] or Pt [23,25,26,28] and L À = Cl À [13,15,18,[23][24][25][26], NO À 2 [28] or I À [23]. All the [M II (crea) 2 Cl 2 ] compounds are trans isomers.…”

“…The crystal structure determinations of creatinine [6][7][8], four organic derivatives (salts [9,10] or clathrates [8]) as well as metal complexes of Ni(II) [11], Cu(II) [12][13][14][15], Zn(II) [16,17], Cd(II) [18,19], Ph-Hg(I) [20,21], Ag(I) [22], Pd(II) [23,24], Pt(II) [25][26][27][28][29][30] and Ir [31] have been reported. A survey of this literature reveals the following coordination roles for crea:…”