Organometallic clusters containing oxygen atoms: (η-C5H5)5(O)V6(µ3-O)8and {(η-C5H5)5V6(µ-3-O)8}2(µ-O), two further derivatives of octahedral (η-C5H5)6V6(µ3-O)8

Organometallic clusters containing oxygen atoms. Preparation, structure, and properties of (.eta.-C5H5)11V13O18(NMe3)2 and (.eta.-C5H5)14V16O24, dimeric derivatives of (.eta.-C5H5)6V6O8

Journal of the American Chemical Society ◽

10.1021/ja00310a104 ◽

1985 ◽

Vol 107 (24) ◽

pp. 7226-7227 ◽

Cited By ~ 20

Author(s):

Frank Bottomley ◽

Daniel E. Paez ◽

Peter S. White

Keyword(s):

Structure And Properties ◽

Organometallic Clusters ◽

Derivatives Of ◽

Oxygen Atoms

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ChemInform Abstract: Organometallic Clusters Containing Oxygen Atoms: Preparation, Structure, and Properties of (η-C5H5)11V13O18(N(CH3)3)2and (η-C5H5)14V16O24, Dimeric Derivatives of (η-C5H5)6V6O8.

Chemischer Informationsdienst ◽

10.1002/chin.198612294 ◽

1986 ◽

Vol 17 (12) ◽

Author(s):

F. BOTTOMLEY ◽

D. E. PAEZ ◽

P. S. WHITE

Keyword(s):

Structure And Properties ◽

Organometallic Clusters ◽

Derivatives Of ◽

Oxygen Atoms

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Structural Systematics of 2/4-Nitrophenoxide Complexes of Closed-Shell Metal Ions. I 2-Nitrophenoxides of Group 1

Australian Journal of Chemistry ◽

10.1071/c97098 ◽

1998 ◽

Vol 51 (8) ◽

pp. 707 ◽

Cited By ~ 9

Author(s):

Jack M. Harrowfield ◽

Raj Pal Sharma ◽

Todd M. Shand ◽

Brian W. Skelton ◽

Allan H. White

Keyword(s):

Room Temperature ◽

Closed Shell ◽

Aromatic Rings ◽

X Ray ◽

Metal Atoms ◽

Metal Derivatives ◽

Derivatives Of ◽

Fourth Coordination ◽

Group 1 ◽

Oxygen Atoms

Room-temperature, single-crystal X-ray studies are recorded for the variously hydrated Group 1 metal derivatives of 2-nitrophenol (2-npH = C6H5NO3). A provisional determination is reported for Li(2-np).½H2O, set as monoclinic, P21/c, a 3·535(3), b 15·06(1), c 24·42(2) Å, β 91·7(1)°, Z = 8, conventional R on F currently 0·18 for No 875 ‘observed’ (I > 3σ(I)) reflections. Na(2-np).H2O is monoclinic, C2/c, a 34 ·23(2), b 3·624(4), c 35·48(2) Å, β 91·24(4)°, Z = 24, R 0·060 for No 1371. Rb(2-np).½ H2O is monoclinic, C2/c (isomorphous with the previously determined potassium analogue), a 25·269(9), b 5·381(5), c 12·010(3) Å, β 105·35(3)°, Z = 8, R 0·046 for No 1380. Cs(2-np).½H2O is monoclinic, P21/n, a 7·648(3), b 26·19(1), c 8·713(6) Å, β 111·75(2)°, Z = 8, R 0·061 for No 2347. All compounds except the lithium derivative are two-dimensional polymeric sheets in which the aromatic rings project to either side of a core of metal atoms coordinated by a web of 2-nitrophenoxide oxygen atoms in various bridging functionalities. The lithium compound is a novel ‘stair’ polymer with two crystallographically independent lithium atoms at successive independent Li–O crossbars, the oxygen atoms of which are phenoxide-Oof each of the two independent ligands. The lithium atoms are alternately four- and five-coordinate, the fourth coordination site of the first being occupied by the water molecule oxygen atom, while the fourth and fifth sites of the second are occupied by the cis-2-nitro oxygen atoms of the two ligands

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Cluster-Redoxpotentiale: Feineffekte durch Variation von Metallatomen und Liganden / Cluster Redox Potentials: Fine Tuning by Variations of Metal Atoms and Ligands

Zeitschrift für Naturforschung B ◽

10.1515/znb-1984-0501 ◽

1984 ◽

Vol 39 (5) ◽

pp. 545-554 ◽

Cited By ~ 17

Author(s):

Ute Honrath ◽

Heinrich Vahrenkamp

Keyword(s):

Electrochemical Behaviour ◽

Fine Tuning ◽

Redox Potentials ◽

Organometallic Clusters ◽

Isoelectronic Series ◽

Metal Atoms ◽

Derivatives Of

Influences due to the variations of metal atoms and ligands in organometallic clusters of the EM3 tetrahedrane type have been studied in detail with respect to their electrochemical behaviour. Replacements of metal atoms or of μ3 bridging chalcogen ligands cause rather small effects in the expected directions. The different charge along isoelectronic series of ECo3+, EFeCo2, EFe2Co- clusters causes drastic changes. 23 mono-, bis-, and tris-isonitrile derivatives of SFeCo2(CO)9 were prepared. The influence of X groups in X-C6H4-NC on the cluster redox potentials is small; it can be expressed by an equation of the Hammett type

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Reactions of primulagenin A. III. Acetyl derivatives and acetyl migration

Australian Journal of Chemistry ◽

10.1071/ch9761341 ◽

1976 ◽

Vol 29 (6) ◽

pp. 1341 ◽

Cited By ~ 2

Author(s):

DR Baigent ◽

OD Hensens ◽

KG Lewis

Keyword(s):

Derivatives Of ◽

Acetyl Migration ◽

Oxygen Atoms

Procedures have been developed for the preparation of all of the possible acetylated derivatives of primulagenin A (olean-12-ene-3β,16α,28-triol). Acetyl migration has been shown to occur between the oxygen atoms at the 16α- and the 28-positions.

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Synthesis, spectroscopic and structural studies of O-methyl and O-isopropyl monothiocarbonate (monoxanthate) derivatives of dimethyl-and diphenyltellurium(IV). Crystal structures of Me2Te[SCO2(i-Pr)]2, Ph2Te[SCO2(i-Pr)]2, Me2TeCl[SCO2Me], and Me2TeBr[SCO2(i-Pr)]

Canadian Journal of Chemistry ◽

10.1139/v96-224 ◽

1996 ◽

Vol 74 (11) ◽

pp. 1968-1982 ◽

Cited By ~ 7

Author(s):

John E. Drake ◽

Robert J. Drake ◽

Layla N. Khasrou ◽

Anil G. Mislankar ◽

Raju Ratnani ◽

...

Keyword(s):

Nmr Spectroscopy ◽

Key Words ◽

Lone Pair ◽

Supramolecular Interactions ◽

Equatorial Position ◽

Structural Studies ◽

Cell Parameters ◽

Distorted Trigonal Bipyramid ◽

Derivatives Of ◽

Oxygen Atoms

Monothiocarbonate derivatives of diorganotellurium(IV), R2Te[SCO2R′]2, and R2TeX[SCO2R′], where R = Me, Ph; R′ = Me, i-Pr; X = Cl, Br, and I, have been prepared and characterized by vibrational and 1H, 13C, and 125Te NMR spectroscopy. Me2Te[SCO2(i-Pr)]2 (2): P21/n (No. 14) with cell parameters a = 6.942(6) Å, b = 25.599(3) Å, c = 9.404(6) Å, β = 94.48(6)°, V = 1666(1) Å3, Z = 4, R = 0.0648, Rw = 0.0624; Ph2Te[SCO2(i-Pr)]2 (4): P21/n (No. 14) with a = 12.360(4) Å, b = 12.277(3) Å, c = 15.066(3) Å, β = 102.82(2)°, V = 2229.1(9) Å3, Z = 4, R = 0.0368, Rw = 0.0312; Me2TeCl[SCO2Me] (5); P21/c (No. 14) with a = 5.193(2) Å, b = 18.118(4) Å, c = 9.613(5) Å, β = 91.31(6)°, V = 904.2(6) Å3, Z = 4, R = 0.0396, Rw = 0.0361; and Me2TeBr[SCO2(i-Pr)] (8): P21/n (No. 14) with a = 11.701(2) Å, b = 6.250(2) Å, c = 16.152(2) Å, β = 98.43(1)°, V = 1168.4(4) Å3, Z = 4, R = 0.0369, Rw = 0.0325. In all molecules, the immediate environment about tellurium is that of the saw-horse structure in which the lone pair is assumed to be stereochemically active and occupying an equatorial position in a distorted trigonal bipyramid. In 2 and 5, the terminal oxygen atoms are oriented toward tellurium, whereas in 4, one O(i-Pr) group is oriented toward tellurium, as it is in 8. In the latter cases, the terminal oxygen atoms act as weak bridges to form a pseudo dimeric species in 4 and a pseudo polymer in 8. Supramolecular interactions in 2 and 5 lead to a sulfur-bridged dimer in the former and a chlorine-bridged polymer in the latter. Key words: structure, tellurium, dimethyl, diphenyl, monothiocarbonates.

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