| 2 | Author
| NicholasC. Norman, PeterM. Webster | Requires cookie* | | Title
| The Synthesis of Some Cyclopentadienyliron-Indium Complexes  | | | Abstract
| Treatm ent o f indium trichloride with three equivalents of the cyclopentadienyliron carbonyl anions, [F e(C O)2(?7-C5H 4R)] (R = H, Me) affords the tri-iron indium com plexes [In {F e(C O)2(//-C 5H 4R)},] (R = H. Me) as dark red crystalline materials. Both com pounds were characterized by spectroscopic and analytical methods. Infrared spectroscopy indicates that both com plexes are undissociated in solution in contrast to previously reported analogous m olybdenum containing species. | | |
Reference
| (Z. Naturforsch. 44b, 91 [1989]; received August 9. 1988) | | |
Published
| 1989 | | |
Keywords
| Synthesis Iron, Indium, Cyclopentadienyl, Carbonyl | | |
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| default:Reihe_B/44/ZNB-1989-44b-0091.pdf | | | Identifier
| ZNB-1989-44b-0091 | | | Volume
| 44 | |
3 | Author
| PeterG. Jones | Requires cookie* | | Title
|  | | | Abstract
| The crystal structure of (OC)AuCl has been determined and refined to R 0.037 (space group Cmem, a = 407.1(1), b = 1042.2(4), c —532.1(3) pm, Z =4). The structure consists of discrete, exactly linear molecules; all atoms lie on the special positions 0, y, 1/4. The bond lengths involving the light atoms are affected by libration. The shortest Au — Au contacts between molecules are 338 pm. | | |
Reference
| Z. Naturforsch. 37b, 823—824 (1982); received March 8 1982 | | |
Published
| 1982 | | |
Keywords
| Crystal Structure, Carbonyl, Gold(I) | | |
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| default:Reihe_B/37/ZNB-1982-37b-0823.pdf | | | Identifier
| ZNB-1982-37b-0823 | | | Volume
| 37 | |
5 | Author
| İzzetA. Mour, Saim Ozkar, CorneliusG. Kreiter | Requires cookie* | | Title
| Synthesis and Spectroscopic Studies of Pentacarbonylfumaronitrile-chromium(O), -molybdenum(O), and -tungsten(O)  | | | Abstract
| Photolysis of hexacarbonyl-chromium(O), -molybdenum(O), and -tungsten(O) in presence of fumaronitrile yields at room tem perature pentacarbonyl-fumaronitrile-chromium(O) (1), -molybdenum(O) (2), and -tungsten(O) (3). The complexes were purified by crystallization and characterized by IR and 13C-NM R spectroscopy. The fumaronitrile ligand is bonded to the M (CO)5 moiety by one nitrile nitrogen atom rather than by the carbon-carbon double bond. In toluene 2 dissociates into fumaronitrile and pentacarbonyl-molybdenum(O), which is stabi lized by the solvent. Fumaronitrile and solvated pentacarbonyl-molybdenum(O) exist in solu tion together with 2 in an equilibrium which lies in favour of the former species. | | |
Reference
| Z. Naturforsch. 49b, 1059—1062 (1994); eingegangen am 13. April 1994 | | |
Published
| 1994 | | |
Keywords
| Chromium, Molybdenum, Tungsten, Carbonyl, Fumaronitrile Complexes | | |
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| default:Reihe_B/49/ZNB-1994-49b-1059.pdf | | | Identifier
| ZNB-1994-49b-1059 | | | Volume
| 49 | |
6 | Author
| Ating Giirkan, AhmetM. Yilmaz, Saim Önal, Özkar | Requires cookie* | | Title
| Electrochemical Study of Tricarbonyl(y;6-cyclooctatetraene)metal(0) Complexes of the Group 6 Elements  | | | Abstract
| Tricarbonyl(?76-cyclooctatetraene)metal(0) complexes of the group 6 elements were prepared by using the procedures described in the literature with some minor modifications and identi fied by IR and NMR spectroscopy. Their electrochemical behavior was studied by using cyclic voltammetry in dichloromethane solution containing 0.1 M tetrabutylammonium tetrafiuorob-orate as supporting electrolyte. Their oxidation and reduction potentials were measured and discussed in terms of the frontier energy levels in connection with the UV-Visible electronic ab sorption spectral data. In order to elucidate the mechanism of electrooxidation of the complexes, constant potential electrolysis was performed for one representative example, tricarbonyl(^6-cyclooctatetraene)chromium(O). The IR monitoring of the reaction showed that it is gradually converted to hexacarbonylchromium(O) upon electrolysis at constant potential. | | |
Reference
| Z. Naturforsch. 53b, 875—880 (1998); received March 9 1998 | | |
Published
| 1998 | | |
Keywords
| Carbonyl, Chromium, Molybdenum, Tungsten, Cyclic Voltammetry | | |
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| default:Reihe_B/53/ZNB-1998-53b-0875.pdf | | | Identifier
| ZNB-1998-53b-0875 | | | Volume
| 53 | |
7 | Author
| KlausR. Pörschke, Richard Mynott | Requires cookie* | | Title
| Bis(dimethyIphosphino)methan-Nickel(0)-Komplexe Bis(dimethylphosphino)methane-Nickel(0) Complexes  | | | Abstract
| The reaction of tris(ethene)nickel(0) with stoichiometric amounts of bis(dimethylphos-phino)methane (dmpm) in ether at low temperature affords the yellow crystalline, dinuclear complexes (dmpm)Ni 2 (QH 4) 4 (1) and (dmpm)2Ni 2 (C 2 H 4)2 (2). 2 reacts with ethyne to yield (dmpm) 2 Ni 2 (C 2 H 2) 2 (3). When 2 is treated with CO at —40 °C the primary product is (dmpm) 2 Ni 2 (CÖ) 2 (w-CO) (4). At 20 °C 4 is converted by additional CO into (dmpm) 2 Ni 2 (CO) 4 (5), which has already been characterized as the reaction product of Ni(CO) 4 with dmpm. In compounds 1—5 the bidentate dmpm acts as a bridging and not as a chelating ligand. The structures of complexes 1—4 were assigned on the basis of their 13 C and 31 P NMR spectra. | | |
Reference
| Z. Naturforsch. 42b, 421—424 (1987); eingegangen am 9. August 1986 | | |
Published
| 1987 | | |
Keywords
| Carbonyl, Ethyne, Nickel(O), Phosphane, 13 C NMR Spectra | | |
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| default:Reihe_B/42/ZNB-1987-42b-0421.pdf | | | Identifier
| ZNB-1987-42b-0421 | | | Volume
| 42 | |
8 | Author
| Peter Klüfers | Requires cookie* | | Title
| Die Kristall-und Molekülstrukturen der  | | | Abstract
| Verbindungen [Cl4_xSn{C o(C O)4}xl mit x = 1 ,2 und 3 The Crystal and M olecular Structures of the Compounds [Cl4_vSn{Co(CO)4} v] with x = 1,2 and 3 The crystal structures o f the com pounds [Cl3SnCo(CO)4] 1, [Cl2Sn{C o(C O)4} 2] 2, and [C lSn{C o(C O)4}3] 3, have been determined by X-ray crystallography. Sn is co-ordinated | | |
Reference
| Z. Naturforsch. 46b, 187—191 (1991); eingegangen am 16. Juli 1990 | | |
Published
| 1991 | | |
Keywords
| Tetracarbonylcobaltio-chloro-stannanes, Tin, Cobalt, Carbonyl, X -R ay Structure | | |
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| default:Reihe_B/46/ZNB-1991-46b-0187.pdf | | | Identifier
| ZNB-1991-46b-0187 | | | Volume
| 46 | |
9 | Author
| PaulK. Baker3, DavidJ M Uldoona, MichaelB. Hursthouseb, SimonJ. Colesb, AidanJ. Laveryc, Andrew Shawcrossc | Requires cookie* | | Title
| The Crystal Structure and Low Temperature 13C NMR Spectrum of the Seven-Coordinate Complex of Tungsten(II), [WI2(CO)3(NCPh)2]  | | | Abstract
| The crystal structure of [WI2(C O)3(N C Ph)2] (1) has been determined by X-ray methods. The crystals are orthorhombic, space group Pnam, a = 7.815(3), b = 13.839(5), c = 18.475(3) Ä, Z = 8, R -0.0346 for 1497 observed data. The complex [WI2(C O)3(NCPh)2] has a seven-coordinate geometry, which may be described as a distorted capped octahedron, with the two iodo-ligands mutually trans, while each nitrile is trans to a carbonyl group. The capped octahedral geometry consists of a capping carbonyl (C(10)} on the face defined by 1(1), C(20) and C(20)#. However, the geom etry may also be described as a capped trigonal prism, which has one triangular face occupied by three carbonyl groups and the second triangular face occupied by N (l) , N (l)# and 1(1) atoms, respectively. The iodide 1(2) occupies the capping position on the rectangular face defined by the atoms C(20), C(20)#, N (l), and N (l)# . The low temperature 13C NM R spectrum (203 K, C D 2C12) of 1 shows a single carbonyl resonance at 219.27 ppm which indicates that the com plex is undergoing a rapid fluxional process in solution at 203 K. | | |
Reference
| Z. Naturforsch. 51b, 263 (1996); received July 7 1995 | | |
Published
| 1996 | | |
Keywords
| Crystal Structure, Benzonitrile, Carbonyl, D iiodo, Tungsten(II) | | |
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| default:Reihe_B/51/ZNB-1996-51b-0263.pdf | | | Identifier
| ZNB-1996-51b-0263 | | | Volume
| 51 | |
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