Carbonyl Halides of the Group-6 Transition Metals. XXIX. The Crystal and Molecular Structure of [Mo(CO)2dpmSe)2Cl]2[Mo6O19].4CH3NO2[dpmSe = (Ph2PCH2P(Se)Ph2]

1988 ◽  
Vol 41 (9) ◽  
pp. 1295 ◽  
Author(s):  
R Colton ◽  
BF Hoskins ◽  
P Panagiotidou
Keyword(s):  
Molecular Structure ◽  
Transition Metals ◽  
Carbonyl Group ◽  
Crystal And Molecular Structure ◽  
Molybdenum Atom ◽  
Bidentate Coordination ◽  
Octahedral Environment ◽  
Group 6

Crystals of [Mo(CO)2( dpmSe )2Cl]2 [Mo6O19].4CH3NO2 are triclinic, Pī , a 12.985(3), b 13.981(3), c 17.200(3)Ǻ, α 91.55(2), β 92.00(2), γ 101.12(2)°. In the cation, [Mo(CO)2(dpmSe )2Cl]+, the molybdenum atom is seven-coordinate with a slightly distorted capped octahedral environment. A carbonyl group occupies the capping position, and both dpmSe ligands display bidentate coordination. The dimensions of the anion are very similar to those previously reported.

Chrom(0)-und Molybdän(0)-Komplexe von 11-Isopropyliden-bicyclo[4.4.1]undeca-2,4,8-trienen / Chromium(0) and Molybdenum(0) Complexes of 11-Isopropylidene-bicyclo[4.4. 1]undeca-2,4,8-trienes

1986 ◽  
Vol 41 (6) ◽  
pp. 722-730 ◽  
Author(s):  
Cornelius G. Kreiter ◽  
Eduard Michels ◽  
Jürgen Kaub
Keyword(s):  
Molecular Structure ◽  
Double Bond ◽  
Nmr Spectroscopy ◽  
Transition Metals ◽  
Crystal And Molecular Structure ◽  
Double Bonds ◽  
Conjugated Diene ◽  
X Ray ◽  
Ir And Nmr Spectroscopy ◽  
Elemental Analyses

11-Isopropylidene-bicyclo[4.4.1]undeca-2,4,8-triene (IBU, 1A) and five alkyl substituted de­rivatives (1B-1F) contain a conjugated diene unit and two isolated CC-double bonds, one exocyclic and one incorporated into the bicvclus, each suited for complexation to transition metals. With [Cr(CO)3(CH3CN)3] (2) 1A-1F form [Cr(CO)3(η6-IBU)] complexes (3A−3F). in which the IBU ligands are coordinated to the chromium via the diene unit and the exocyclic CC-double bond. The corresponding [Mo(CO)3(η6-IBU)] complexes (5A−5F) are obtained from the reactions of [Mo(CO)3(diglyme)] (4) with 1A−1F. In addition, the isomeric [Mo(CO)3(η6-IBU)] complexes (6A−6D) are formed, in which the IBU ligands are bound to molybdenum via the three cyclic CC-double bonds. The complexes 3A−3F, 5A−5F and 6A−6D were studied by IR and NMR spectroscopy (1H. 13C) and characterized by C, H elemental analyses. The crystal and molecular structure of 1A was determined by X-ray structure analysis.

Crystal and molecular structure of [dimethyl(3,5-dimethyl-1-pyrazolyl)(ethanol-amino)gallato (N(2),O,N(3))](η3-cycloheptatrienyl)dicarbonylmolybdenum

1981 ◽  
Vol 59 (11) ◽  
pp. 1665-1670 ◽  
Author(s):  
Kenneth S. Chong ◽  
Steven J. Rettig ◽  
Alan Storr ◽  
James Trotter
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bonds ◽  
Least Squares ◽  
Crystal And Molecular Structure ◽  
Amino Nitrogen ◽  
Full Matrix ◽  
Octahedral Environment ◽  
Distorted Octahedral ◽  
Unusual Type

Crystals of [dimethyl(3,5-dimethyl-l-pyrazolyl)(ethanolamino)gallato(N(2),O,N(3))](η3-cycloheptatrienyl)dicarbonylmolybdenum are monoclinic, a = 10.511(1), b = 8.335(1), c = 24.138(3) Å, β = 102.22(1)°, Z = 4, space group P21/c. The structure was solved by Patterson and Fourier syntheses and was reflned by full-matrix least-squares procedures to R = 0.028 and Rw = 0.046 for 3708 reflections with I ≥ 3σ(I). The crystal structure consists of discrete molecules linked by N—H … O hydrogen bonds (N … O = 2.929(5) Å). The Mo atom is in a distorted octahedral environment with the η3-C7H7 ligand occupying one coordination site, trans to the amino nitrogen, as a π-donating ligand. Important bond distances (corrected for libration) are: Mo—O, 2.245(2), Mo—N(amino), 2.249(3), Mo—N(pyrazolyl), 2.270(3), Mo—C(O), 1.950(4) and 1.947(4), Mo—C(C7H7), 2.176(4), 2.364(4), and 2.380(4), Ga—O, 1.919(3), Ga—N, 1.984(3), and Ga—C, 1.982(5) and 1.983(5) Å. An unusual type of disorder is present in which a second image of the molecule, approximately mirrored by the plane y = 1/4, is in evidence at low occupancy.

Crystal and molecular structure of hexakis(tert-butoxo)dialuminum. Comments on the extent of M-O .pi. bonding in Group 6 and Group 13 alkoxides

1991 ◽  
Vol 30 (5) ◽  
pp. 1020-1024 ◽  
Author(s):  
Roger H. Cayton ◽  
Malcolm H. Chisholm ◽  
Ernest R. Davidson ◽  
Vincent F. DiStasi ◽  
Ping. Du ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Crystal And Molecular Structure ◽  
Group 13 ◽  
Group 6
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