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  • 1
    Electronic Resource
    Electronic Resource
    A long silicon-hydrogen bond or a short silicon-hydrogen nonbond? Neutron-diffraction study of (η5CH3C5H4)(CO)2(H)MnSiF(C6H5)2 (1982)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 104 (1982), S. 7378-7380 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00389a107
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  • 2
    Electronic Resource
    Electronic Resource
    Transition-metal ketenes. 21. Conversion of .eta.2-ketenyl complexes into novel cations with a tungstaphosphabicyclo[1.1.0]butanone unit. Synthesis and structure (1984)
    s.l. : American Chemical Society
    Organometallics 3 (1984), S. 777-782 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om00083a023
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  • 3
    Electronic Resource
    Electronic Resource
    Kinetic and mechanistic investigations of transition metal complex reactions. 19. Spontaneous rearrangement of amino(chloro)carbene into chloro aminocarbyne complexes. Synthesis of aminocarbene and aminocarbyne complexes and kinetics and mechanism of the rearrangement reaction (1985)
    s.l. : American Chemical Society
    Organometallics 4 (1985), S. 726-735 
    Details
    ISSN: 1520-6041
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/om00123a020
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  • 4
    Electronic Resource
    Electronic Resource
    The long-term course of alcoholism, 5, 10 and 16 years after treatment (2005)
    Oxford, UK : Blackwell Science Ltd
    Addiction 100 (2005), S. 0 
    Details
    ISSN: 1360-0443
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Aims  To discover the long-term stability of drinking behaviour following an in-patient treatment episode.Design  Three follow-up periods were used at 5, 10 and 16 years. The patients were classified as being abstinent, improved or unimproved on the basis of self-reported drinking behaviour. Patients who could not be interviewed at follow-up were classified as unimproved.Setting  An alcohol dependence treatment programme at the University Hospital Tuebingen, Germany.Participants  We were able to locate all 96 patients at the 16-year follow-up. Seventy were alive and 26 had died. We collected information from 59 of the 70 surviving patients. The remaining 11 patients could be located and were definitely alive.Findings  Thirty-eight of the 70 patients were abstinent, 10 were improved and 22 (including the 11 living patients without further information) were classified as unimproved. Our main finding indicates that the so-called ‘improved drinking’ is very inconsistent over time. In contrast, the abstinent and unimproved patients were much more stable in their drinking behaviour.Conclusions  This study extends our knowledge of the drinking trajectory and outcome from only a few years of follow-up to 16 years. Complete abstinence and unimproved drinking behaviour were the most stable drinking patterns observed over the long term, confirming study results obtained primarily from English-speaking countries.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1360-0443.2005.01065.x
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  • 5
    Electronic Resource
    Electronic Resource
    Biological markers as indicators for relapse in alcohol-dependent patients (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Addiction biology 4 (1999), S. 0 
    Details
    ISSN: 1369-1600
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Although biological markers such as carbohydrate-deficient transferrin (CDT), γ-glutamyl transferase (GGT) and mean corpuscular volume (MCV) have been used as indicators for heavy alcohol consumption and alcoholism little information is available on the utitlity of these markers in detecting relapses. In this study the value of the biological markers CDT, GGT and MCV was examined in monitoring an outpatient treatment programme for alcohol-dependent patients. In 163 male alcoholic patients CDT, GGT and mean corpuscular volume (MCV) were assayed at the beginning and after 6 months during the outpatient programme. All markers distingushed between relapsers and abstainers (p〈0.01). The sensitivity for relapses was 55% for CDT, 50% for GGT and 20% for MCV. Combining all markers the sensitivity could be enhanced to 85%, with only a little loss of specificity (85%). The highest positive predictive value was 73% for CDT used as a single marker. The negative predictive value (CDT 93%, GGT 92%, MCV 88%) and the diagnostic efficiency (CDT 91%, GGT 87%, MCV 85%) of all markers were very high. These results indicate that CDT is the most efficient marker for alcohol relapses, followed by GGT. MCV seems to be a marker of second choice.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1080/13556219971722
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  • 6
    Electronic Resource
    Electronic Resource
    Übergangsmetall-Carbin-Komplexe, LXVIII. Synthese und Struktur neuartiger zweikerniger Biscarbin-Komplexe des Chroms, Molybdäns und Wolframs mit verbrückenden Phenylthio-, Arylseleno-, Halogeno- und Pseudohalogeno-Liganden (1982)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 3152-3166 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Transition Metal Carbyne Complexes, LXVIII. Synthesis and Structure of Novel Binuclear Biscarbyne Complexes of Chromium, Molybdenum, and Tungsten with Bridging Phenylthio-, Arylseleno-, Halogeno-, and Pseudohalogeno LigandsPentacarbonyl[(diethylamino)(ethoxy)carbene]molybdenum (1) reacts with boron trifluoride to give a very unstable product which is supposed to be pentacarbonyl[(diethylamino)carbyne]-molybdenum tetrafluoroborate (2). Low temperature reaction of 2 with bromide, iodide, and thiocyanate yields the neutral trans-substituted carbyne complexes trans-X(CO)4MoCNEt2 (4a-c) [X = Br (a), I (b), SCN (c)] cyanate and 4-(trifluoromethyl)phenylselenolate afford the compounds (μ-X)2[(CO)3MoCNEt2]2 (5d, f) [X = OCN (d), 4-CF3C6H4Se (f)] which are members of a new class of binuclear biscarbyne complexes. Analogues 5a-c, g-l are prepared from the carbyne complexes trans-X(CO)4MCNR2 (4a-c, g-l) on warming in solution. The corresponding complex 5e (X = N3, M = W, R = C2H5) is obtained by the reaction of pentacarbonyl[(diethylamino)carbyne]tungsten tetrafluoroborate (6) with azide. The structures of 5b, d, e, g are ensured by X-ray analyses.
    Notes: Pentacarbonyl[(diethylamino)(ethoxy)carben]molybdän (1) reagiert mit Bortrifluorid zu einem sehr instabilen Produkt, bei dem es sich vermutlich um Pentacarbonyl[(diethylamino)carbin]-molybdän-tetrafluroborat (2) handelt. Wird 2 bei tiefer Temperatur mit Bromid, Iodid und Thiocyanat umgesetzt, erhält man die neutralen trans-substituierten Carbinkomplexe trans-X(CO)4MoCNEt2 (4a-c) [X = Br (a), I (b), SCN (c)] demgegenüber ergeben Cyanat und 4-(Trifluormethyl)phenylselenolat die Verbindungen (μ-X)2[(CO)3MoCNEt2]2 (5d, f) [X = OCN (d), 4-CF3C6H4Se (f)] als Vertreter einer neuen Klasse von zweikernigen Biscarbin-Komplexen. Die dazu analogen Verbindungen 5a-c, g--l werden dargestellt, indem man die Carbinkomplexe trans-X(CO)4MCNR2 (4a-c, g-l) in Lösung aufwärmt. Der entsprechende Komplex 5e (X = N3, M = W, R = C2H5) wird bei der Umsetzung von Pentacarbonyl[(diethylamino)carbin]-wolfram-tetrafluoroborat (6) mit Azid erhalten. Der Aufbau von 5b, d, e, g ist durch Röntgenstrukturanalysen gesichert.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19821150920
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  • 7
    Electronic Resource
    Electronic Resource
    Reaktionen von Komplexliganden, XXIII. Bis(phosphino)inden-Derivate durch C—C-Verknüpfung von Arylcarben-Liganden und Bis(diphenylphosphino)acetylen (1983)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 116 (1983), S. 2337-2343 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Complex Ligands, XXIII. Bis(phosphino)indene Derivatives from Carbon Carbon Bond Formation between Arylcarbene Ligands and Bis(diphenylphosphino)acetylenePentacarbonyl(methoxyphenylcarbene) complexes of chromium and tungsten (1a, 2a) react with bis(diphenylphosphino)acetylene (3) via CO substitution to give binuclear alkyne bridged bis(carbene) complexes (CO)4[CH3O(C6H5) C]M-[(C6H5)2P-C ≡ C-P(C6H5)2]-M(CO)4[C(OCH3)C6H5](4a, 5a). The chromium compound 4a is cleaved on warming to yield the tetracarbonyl-[1,2-bis(phosphino)indene]chromium complex 6a and la. In a one-pot reaction the bis(phosphino)indene derivatives 6a-c are formed directly from arylcarbene chromium complexes (CO)5Cr[C(p-RC6H4)OCH3] (R=;H, CH3, CF3) (1a-c) and 3. The structure of 6c is established by X-ray analysis.
    Notes: Pentacarbonyl(methoxyphenylcarben)-Komplexe des Chroms und Wolframs (1a, 2a) reagieren mit Bis(diphenylphosphino)acetylen (3) unter CO-Substitution zu den zweikernigen alkin-verbrückten Bis(carben)-Komplexen (CO)4[CH3O(C6H5) C]M-[(C6H5)2P-C ≡ C-P(C6H5)2]-M(CO)4[C(OCH3)C65](4a, 5a). Die Chrom-Verbindung 4a wird beim Erwärmen in den Tetracarbonyl [1,2-bis(phosphino)inden]chrom-Komplex 6a und 1a gespalten. Aus den Arylcarben-Chrom-Komplexen (CO)5Cr[Cp-RC6H4)OCH3] (R=;H, CH3, CF3) (1a-c) und 3 entstehen direkt die 1,2-Bis(phosphino)inden-Derivate 6a-c. Der Molekülbau von 6c wird durch eine Röntgenstrukturanalyse belegt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19831160622
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  • 8
    Electronic Resource
    Electronic Resource
    Übergangsmetall-Carben-Komplexe, CXVIII1) Kinetische und mechanistische Untersuchungen von Übergangsmetall-Komplex-Reaktionen, VIII2) C, Cr-Wanderung von SeR in (CO)5Cr[C(SeR)NEt2]: Kinetische, mechanistische und präparative Untersuchungen (1981)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 114 (1981), S. 3220-3232 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Transition Metal Carbene Complexes, CXVIII1) Kinetic and Mechanistic Investigations of Transition Metal Complex Reactions, VIII2) C, Cr-Migration of SeR in (CO)5Cr[C(SeR)NEt2]: Kinetic, Mechanistic and Preparative InvestigationsOn heating in solution, [(arylseleno)(diethylamino)carbene]pentacarbonylchromium complexes, (CO)5Cr[C(SeR)NEt2], (2) [R = 4-C6H4CF3 (a), 4-C6H4Br (b), 4-C6H4F (c), C6H5 (d), 4-C6H4CH3 (e), 4-C6H4OCH3 (f), 1-C10H7 (g)] rearrange with CO-elimination and C, Cr-migration of SeR to form the corresponding trans-(arylseleno)tetracarbonyl(diethylaminocarbyne) chromium complexes, trans-RSe(CO)4CrCNEt2, (3a-g). The rearrangement follows a first-order rate law. Free carbon monoxide does not influence the reaction rate whereas the Polarity of the solvent and the type of the substituent R only influence the rate of the reaction to a very small extent. The activation enthalpies are ΔH≠ = 101-104 kj mol-1, the activation entropies ΔS = 27-33 j mol-1 K-1. Addition of PPh3 to solutions of 2d does not influence the rate of the rearrangement but leads to a different reaction product, mer-(CO)3(PPh)3(SePh)CrCNEt2 (4d). Complex (4d). is also formed by photolysis of 2d in the presence of PPh3, The compounds 3a - d and 4d are characterized by analytical and spectroscopic means, 3c, additionally by an X-ray analysis.
    Notes: Beim Erwärmen in Lösung lagern sich die [(Arylseleno)(diethylamino)carben]pentacarbonyl-chrom-Komplexe, (CO)5Cr[C(SeR)NEt2], (2) [R = 4-C6H4CF3 (a), 4-C6H4Br (b), 4-C6H4 (c_, C6H4 (d), 4-C6H4OCH3 (e) 4-C6H4OCH3 (f), 1-C10H7 (g)] unter CO-Abspaltung und C, Cr-Wanderung von SeR zu den entsprechenden trans-(Arylseleno)tetracarbonyl(diethylaminocarbin)-chrom-Komplexen, trans-RSe(CO)4CrCNEt2, (3a-g) nach einem Geschwindigkeitsgesetz erster Ordnung um. Freies Kohlenmonoxid ist ohne, die Polarität des Solvens sowie die Art des Substituenten R sind nur von geringem Einfluß auf die Reaktionsgeschwindigkeit. Die Aktivierungsenthalpien betragen ΔH≠ = 101 104 kj mol-1, die Aktivierungsentropien ΔS≠ = 27-33 j mol-1 K-1. Zusatz von PPh3 zu Lösungen von 2d beeinflußt zwar die Umlagerungsgeschwindigkeit nicht, man erhält jedoch mer-(CO)3(PPh)3(SePh)CrCNEt2 (4d) als Reaktionsprodukt. Photolyse von 2d in THF in Anwesenheit von PPh3 liefert ebenfalls 4d. Die Verbindungen 3a-d und 4d wurden analytisch und spektroskopisch gesichert, 3c zusätzlich durch eine Röntgenstrukturanalyse.
    Additional Material: 8 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19811141004
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  • 9
    Electronic Resource
    Electronic Resource
    Untersuchungen zur Reaktivität von Metall-π-Komplexen, XXXVI. Zweikernige Sandwichkomplexe mit Metall-Metall-Bindung: Synthese und Struktur von (μ-C5H5)2Pd2(PR3)2 (1982)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 2905-2913 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Studies on the Reactivity of Metal π-Complexes, XXXVI. Dinuclear Sandwich Complexes Containing a Metal-Metal Bond: Synthesis and Structure of (μ-C5H5)2Pd2(PR3)2The complexes (C5H5)2Pd2(PR3)2 (1-6) are prepared by reduction of C5H5Pd(PR3)OCOCH3 with NaK2.8 or in a one-pot synthesis by reaction of [(PR3)PdCl]2(μ-OCOCH3)2 with 4 equivalents TlC5H5. The triphenyl phosphite complex (C5H5)2Pd2[P(OPh)3]2 (7) is obtained from [P(OPh)3PdCl2]2 and TlC5H5. The X-ray structure analysis of (C5H5)2Pd2(PEt3)2 (5) shows that the two planar cyclopentadienyl ligands are coordinated sandwich-like to the Pd2(PR3)2 unit; according to the bond angle P—Pd—Pd = 175.45° the P—Pd—Pd—P arrangement is nearly linear. The different C—C distances in the five-membered rings point to the presence of an „allyl-ene“ system and thus to a trihapto- (h3) coordination of the C5H5 ligands.
    Notes: Die Komplexe (C5H5)2Pd2(PR3)2 (1-6) sind durch Reduktion von C5H5Pd(PR3)OCOCH3 mit NaK2.8 oder in einer Eintopfsynthese durch Umsetzung von [(PR3)PdCl]2(μ-OCOCH3)2 mit 4 äquivalenten TlC5H5 erhältlich. Der Triphenylphosphit-Komplex (C5H5)2Pd2[P(OPh)3]2 (7) entsteht aus [P(OPh)3Pdl2]2 und TlC5H5. Die Röntgenstrukturanalyse von (C5H5)2Pd2(PEt3)2 (5) zeigt, daß die beiden planaren Cyclopentadienylliganden sandwich-artig an die Pd2(PR3)2-Einheit koordiniert sind; die Anordnung P—Pd—Pd—P ist mit einem Bindungswinkel P—Pd—Pd von 175.45° nahezu linear. Die unterschiedlichen C—C-Abstände in den Fünfringen weisen auf das Vorliegen eines „allyl-ene“-Systems und damit auf eine trihapto- (h3)-Koordination der C5H5-Liganden hin.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19821150821
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  • 10
    Electronic Resource
    Electronic Resource
    Übergangsmetall-substituierte Phosphane, Arsane und Stibane, XXVI. Synthese und Kristallstruktur von Dicarbonyl(cyclopentadienyl)-bis(trimethylphosphan)molybdän-tricarbonyl(cyclopentadienyl)-molybdat (1982)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 115 (1982), S. 2003-2008 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Transition Metal Substituted Phosphanes, Arsanes, and Stibanes, XXVI. Synthesis and Crystal Structure of Dicarbonyl(cyclopentadienyl)bis(trimethylphosphane)-molybdenum-tricarbonyl(cyclopentadienyl)molybdate{[Cp(CO)2(Me3P)M]2AsMe2}M(CO)3Cp (M = Cr, Mo, W) (1a-c) reacts in acetonitrile with Me3P to give [Cp(CO)2(Me3P)2M] M(CO)3Cp (2a-c) and Cp(CO)2(Me3P)M—AsMe2 (3a-c). 2b, c are in addition obtained by treatment of [Cp(CO)3)3M]2 (M = Mo, W) with Me3P in benzene. The structure of 2a-c is established by NMR and IR spectroscopy and in the case of 2b by X-ray analysis.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19821150531
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