Redetermination of the crystal and molecular structure of tris(bipyridine)chromium(III) hexafluorophosphate

Journal Article · Wed May 17 00:00:00 EDT 1989 · Inorganic Chemistry; (USA)

DOI:https://doi.org/10.1021/ic00309a051· OSTI ID:7167340

Goodwin, K V; Pennington, W T; Petersen, J D ^[1]

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1. Clemson Univ., SC (USA)

During studies of the structures of the complexes Cr(bpm){sub 2}Cl{sub 2}{sup +}, Cr(bpm){sub 3}{sup 3+}, and Cr(dpp){sub 3}{sup 3+} (where bpm = 2,2{prime}-bipyridine and dpp = 2,3-bis(2-pyridyl)pyrazine), comparison of their structures to that of (Cr(bpy){sub 3})(PF{sub 3}){sub 3} showed differences that could not be rationalized. The structure of the latter compound has been investigated and is reported herein. The results indicate that there was a missed center of symmetry that led to the distorted geometry of the structure previously reported for (Cr(bpy){sub 3})(PF{sub 6}){sub 3} resulting from the R32 refinement. Addition of an inversion center midway between the two cations was found to generate a 3 site at (0, 0, 1/4). The model obtained from the R3c refinement was found to have chemically reasonable distances and angles that compare favorably with the geometry observed for Cr(bpy){sub 3}{sup 3+} cation of a perchlorate salt which co-crystallizes with bipyridinium perchlorate. 9 refs., 1 fig., 3 tabs.

• OSTI ID: 7167340
• Journal Information: Inorganic Chemistry; (USA), Vol. 28:10; ISSN 0020-1669
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
BIPYRIDINES
MOLECULAR STRUCTURE
CHROMIUM COMPLEXES
PHOSPHORUS FLUORIDES
PYRAZINES
EXPERIMENTAL DATA
AZINES
COMPLEXES
DATA
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PHOSPHORUS COMPOUNDS
PYRIDINES
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties