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Volumn 15, Issue 11, 2003, Pages 2153-2160

Rich structural and magnetic chemistry of cobalt(II) pyrimidin-2-olate and pyrimidin-4-olate complexes. Synthesis, x-ray powder diffraction studies, and thermal behavior

Author keywords

[No Author keywords available]

Indexed keywords

MAGNETIC CHEMISTRY;

EID: 0037905420     PISSN: 08974756     EISSN: None     Source Type: Journal    
DOI: 10.1021/cm030195k     Document Type: Article
Times cited : (40)

References (32)
  • 14
    • 0037557402 scopus 로고    scopus 로고
    • note
    • In search of a crystallochemical explanation of the observed orthorhombic character, we also tested the two acentric I2mb and Im2a space groups (two proper subgroups of Imma). Indeed, in these space groups, the ligands are ordered along one axis (a or b) and disordered along the other one (b or a), respectively, thus differentiating the two directions. Unfortunately, the resulting models, obtained with parallel refinements, did not improve the agreement factors and were therefore discarded. Similarly, on lowering the symmetry down to the monoclinic I112/b (disordered structure) or I11b (ordered) as well as to the triclinic I1 (ordered) space groups, no better agreement was ever observed. Thus, we still have no structural explanation for the existence of an orthorhombic, rather than a tetragonal, unit cell.
  • 18
    • 0001262544 scopus 로고
    • March, A. Z. Kristallogr. 1932, 81, 285. Dollase, W. A. J. Appl. Crystallogr. 1987, 19, 267.
    • (1932) Z. Kristallogr. , vol.81 , pp. 285
    • March, A.1
  • 20
    • 0038232928 scopus 로고    scopus 로고
    • note
    • The reader may find it useful to draw an ordered crystal structure from the deposited coordinates by using the nonstandard space groups I11b or I1, differing in the relative stacking (along c) of ordered square-meshes-based layers.
  • 23
    • 0037557406 scopus 로고    scopus 로고
    • note
    • Magnetic measurements performed on 2a and 2b as a function of the applied fields (500 and 10000 G) do not have any effect on the thermal behavior of their susceptibility.
  • 26
    • 0038232929 scopus 로고    scopus 로고
    • note
    • χMT curve of compound 3 because both 2b and 3 (although differing in their supramolecular arrangements) are (locally) somewhat similar in that they contain tetrahedral Co(II) ions linked by pymo bridges.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.