The structure of dichlorobis(phenylamine)(bicyclo[2.2.1]hepta-2,5-diene)ruthenium: A π-bonded norbornadiene complex of ruthenium(II)
The structure of dichlorobis(aniline)(norbornadiene)ruthenium (aniline = phenylamine, norbornadiene = bicyclo[2.2.1]hepta-2,5-diene), RuCl 2 (C 7H 8)(C 6H 5NH 2) 2, has been determined from three-dimensional X-ray data collected by counter techniques and refined by a least-squares procedure to a con...
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Published in | Journal of organometallic chemistry Vol. 72; no. 2; pp. 247 - 259 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
01.01.1974
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Online Access | Get full text |
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Summary: | The structure of dichlorobis(aniline)(norbornadiene)ruthenium (aniline = phenylamine, norbornadiene = bicyclo[2.2.1]hepta-2,5-diene), RuCl
2 (C
7H
8)(C
6H
5NH
2)
2, has been determined from three-dimensional X-ray data collected by counter techniques and refined by a least-squares procedure to a conventional agreement index of 0.025. The complex crystallizes in space group
C
12
2
v
Cmc2
1 of the orthorhombic system in a cell of dimensions a 17.162(4),
b 12.589(3),
c 8.522(2) Å,
V 1841.3 Å
3 with
Z 4. Observed and calculated densities are 1.61(1) and 1.62 g/cm
3. The coordination geometry about the ruthenium atom is distorted octahedral with the norbornadiene moiety bound through the two double bonds. The complex possesses crystallographically imposed
C
3(m)
symmetry with the
trans-chloro ligands, the ruthenium atom, and the three
sp
3 carbon atoms of the diolefin constrained to the mirror plane. The coordination sphere is completed by
cis-aniline groups. Bond distances of interest are: RuCt (where Ct is the center of the olefinic bond), 2.066(4); RuN, 2.213(3); RuCl, 2.415(2) and 2.407(1) Å. The CC distance of the olefinic bond is 1.386(6) Å, compared with 1.35 Å in the free ligand. The remaining distances in the bicyclic ligand are very close to the expected value for CC single bonds, 1.54 Å. The CtRuCt angle is 70.0° and the ClRuCl angle is 156.5(5)°. |
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ISSN: | 0022-328X 1872-8561 |
DOI: | 10.1016/S0022-328X(00)81498-9 |