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1Author    D., R., T. A. Sh, W. ++Requires cookie*
 Title    Phosphazenylcyclophosphazene Syntheses U sing Silylmonophosphazenes * > *  
 Abstract    The reactions of the lialogenocy clotri -phosphazatrienes N 3 P 3 F 6 and N 3 P 3 CI6 with the reagentsMesSiR [R = NP(NMe2)3 ,NPMe3 , NPMe2 Ph, NPMePh2, N P Ph3, and N P (O Et)3] are discussed, and conclusions are drawn about some of the factors controlling the course and rate of these reactions. Some novel phosphazenyl-derivatives, N 3 P3 X 5 R [X = F or Cl, R = NP(NMe2)3; X = F, R = N P (O Et)3] are reported. 
  Reference    (Z. Naturforsch. 32b, 236—237 [1977]; received November 22 1976) 
  Published    1977 
  Keywords    Halogenocyclotriphosphazatrienes, Phosphazenylcyclophosphazenes, Silylmonophosphazenes, Nucleophilicity, Reactivity 
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 TEI-XML for    default:Reihe_B/32/ZNB-1977-32b-0236_n.pdf 
 Identifier    ZNB-1977-32b-0236_n 
 Volume    32 
2Author    S. Sarkar, A. MidlerRequires cookie*
 Title    von Nitrosyl-Komplexen. Direkte Darstellung von Thiocyanatonitro- syl-Komplexen und von [Mo(NO)(CN)5] 3 - A Contribution on the Synthesis and Reactivity of Nitrosyl Complexes. Direct Preparation of Thiocyanatonitrosvl Complexes and of [Mo(NO)(CN)5] 3  
 Abstract    Some new aspects of the synthesis and reacti-vity of nitrosyl complexes are given. The com-plexes [Cr(NO)(NCS5] 3 -, [Mo(NO)(NCS)4] 2 -[3a], [Os(NO)(NCS)5] 2 -and [Mo(NO)(CN)5] 3 -have been isolated as tetraphenylphosphonium salts. 
  Reference    Z. Naturforsch. 33b, 1053—1055 (1978); eingegangen am 8. Mai/5. Juni 1978 
  Published    1978 
  Keywords    Synthesis, Reactivity, Nitrosyl Complexes 
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 TEI-XML for    default:Reihe_B/33/ZNB-1978-33b-1053_n.pdf 
 Identifier    ZNB-1978-33b-1053_n 
 Volume    33 
3Author    Michael Börner, Rainer Müller, Heimich VahrenkampRequires cookie*
 Title    Arsenverbrückte zweikernige Mn(CO)4Br-Komplexe Arsenic Bridged Dinuclear Mn(C0)4Br Complexes  
 Abstract    In Mn(CO)öBr one or two CO groups could be replaced by Me2AsCl. From Me2AsCl-Mn(CO)4Br with carbonyl metalates, or from Mn(CO)sBr with organometal dimethylarsenides, the arsenic bridged dinuclear complexes L"M-AsMe2-Mn(CO)4Br with L"M = CrCp(CO)3, MoCp(CO)3, WCp(CO)3, and Mn(CO)5 were obtained. Upon attempts to convert these to metal-metal bonded compounds the Cr-As-Mn complex decomposed whereas the Mn-As-Mn complex was spontaneously converted to (CO)4Mn|>AsMe2, //-Br]Mn(CO)4. 
  Reference    Z. Naturforsch. 35b, 1391—1394 (1980); eingegangen am 25. Juni 1980 
  Published    1980 
  Keywords    Ligand Bridged Dinuclear Complexes, Substitution, Reactivity 
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 TEI-XML for    default:Reihe_B/35/ZNB-1980-35b-1391.pdf 
 Identifier    ZNB-1980-35b-1391 
 Volume    35 
4Author    ManfredL. Ziegler, Klaus Blechschmitt, Harald Bock, Ernst Guggolz, RichardP. KorswagenRequires cookie*
 Title    Über die Reaktivität von [(CH 3 ) 2 N] 6 W 2 (W=W) gegenüber CS 2 /S 8 und CS 2 /Se, Röntgenstrukturanalyse von [(CH 3 ) 2 NCS 2 ] 2 W(S)(S 2 ) Reactivity of [(CH 3 ) 2 N] 6 W 2 (W=W) Towards CS 2 /S 8 and CS 2 /Se 8 . X-Ray Structure Analysis of [(CH 3 ) 2 NCS 2 ] 2 W(S)(S 2 )  
 Abstract    In this paper we report two improved preparation methods for [(CH 3) 2 N] 6 W 2 (W=W) (1), one starting from WC1 4 (yield 51%), and a second one starting from W 2 C1 6 (THF) 4 (ca. 60% yield). We have studied the reactions of 1 with different nucleophiles, among them triphenylalkylidenphos-phoranes (like Ph 3 P=CH 2 and Ph 3 P=CHPh • LiCl; Ph = phenyl), sulfur and CS 2 . 1 reacts with S 8 and CS 2 in hexane to yield the two new compounds (Me 2 NCS 2) 2 WS(S 2) (4) and W(CS 2 H)(Me 2 NCS 2) 2 (5), both containing dithiocarbamato ligands formed by insertion of CS 2 into the W-N bond. The two mononuclear compounds were characterized spectroscopically, in the case of 4 an X-ray diffraction structure analysis was performed. The reaction of 1 with Se and CS 2 , leads to the compounds 4, (Me 2 NCS 2) 2 W 2 S 4 (6) and [(Me 2 N) 2 C]CS 2 (7), which were also characterized spectroscopically. No Se-containing compounds could be isolated. 4 crystallizes monoclinically, C 5 2h -P2Jn, with a = 648.6(3), b = 1346.7(6) and c = 1745.9(7) pm, ß = 91.85(3)°, V = 1524xl0 6 pm 3 , Z = 4. The structure of the seven-coordinate tungsten compound is discussed and compared to complexes with similar ligands and geometry. 
  Reference    Z. Naturforsch. 43b, 590—598 (1988); eingegangen am 28. Dezember 1987 
  Published    1988 
  Keywords    Reactivity, Synthesis, X-Ray 
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 TEI-XML for    default:Reihe_B/43/ZNB-1988-43b-0590.pdf 
 Identifier    ZNB-1988-43b-0590 
 Volume    43 
5Author    Requires cookie*
 Title    Thermolyse von N-Alkyl-6.7-dihydro-5H-dibenz[c.e]azepin-N-oxiden * Thermolysis of N-Alkyl-6,7-dihydro-5H-dibenz[c,e]azepine-N-oxides  
 Abstract    R ic h a r d K r e h e r , H u b e r t P a w e l c z y k u n d W e r n e r G e r h a r d t N-Alkyl-6,7-dihydro-5H-dibenz[c,e] 
  Reference    (Z. Naturforsch. 30b, 926—931 [1975]; eingegangen am 2. Juni 1975) 
  Published    1975 
  Keywords    azepine-N-oxides, Cyclic Amine Oxides, Structure, Reactivity, Thermolysis 
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 TEI-XML for    default:Reihe_B/30/ZNB-1975-30b-0926.pdf 
 Identifier    ZNB-1975-30b-0926 
 Volume    30 
6Author    Werner Bertleff, Helmut WernerRequires cookie*
 Title    Ein- und zweikernige Palladiumkomplexe mit CS2 und PR3CS2 als Liganden [1] Mono-and Binuclear Palladium Complexes with CS2 and PR3CS2 as Ligands [1]  
 Abstract    The compounds Pd(PPr*3)" (n = 2 or 3) and Pd(PMePh2)4 react with CS2 to give the mononuclear complexes (PR3)2Pd(>/ 2 -CS2). In the reactions of Pd(PMe3)4 and Pd(PMe2Ph)4 with CS2 binuclear complexes [(PR3)Pcl(S2CPR3)]2 containing bridging phosphoniodithio-carboxylates as ligands are formed. [(PMe3)Pd(S 2 CPMe3)]o is also obtained from (PR3)2Pd(r? 2 -CS2) (PR3 = PPr'3, PMePho, PPI13) and PMe3. The reactions of Pd(PR3)" with the zwitter ions PMe3CS2 and PMe2PhCS2 lead to binuclear compounds f(PR3)Pd(S2CPR'3)]2 (PR3 = PPI 4 3, PMeoPh, PMePho, PPh3; PR'3 = PMe3, and PK3 = PMePh2; PR'3 = PMe2Ph). [(PMe3)Pd(S2CPMe3)]2 reacts with PMe3 with cleavage of the phosphoniodithiocarboxylate bridges to give (PMe3)2Pd(S 2 CPMe3). The formation of [(PMe3)Ni(S2CPMe3)]2 from Ni(PMe3)4 and PMe3CS2 is also described. 
  Reference    Z. Naturforsch. 37b, 1294—1300 (1982); eingegangen am 11. Juni 1982 
  Published    1982 
  Keywords    Carbondisulfidebis(phosphane)palladium Complexes, Synthesis, Reactivity, Binuclear Palladium Complexes 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1294.pdf 
 Identifier    ZNB-1982-37b-1294 
 Volume    37 
7Author    Ekkehard Lindner, Efstathios TamoutsidisRequires cookie*
 Title    Das reaktive Verhalten von phenyl-und imidazolylsubstituierten Propenoyldiphenylphosphanen The Reactive Behaviour of Phenyl and Imidazolyl Substituted Propenoyldiphenylphosphanes  
 Abstract    The unsaturated acylphosphanes RC(0)PPh2 (4a, b') [R = Ph-CH = CH (a), C3H4N2(Cl)-C(Ph) = CH (b')J are obtained by reaction of RC(0)C1 (3a, b') with (CH3)3SiPPh2. The preparation of 3 b' is possible by addition of imidazole to the triple bond of Ph-C=C-C(0)0C2H5 and subsequent hydrolysis of RC(0)0C2H5 (lb) [R = C3H3N2-C(Ph) = CH (b)] and chlorination of RC02H (2b'). From 4a and imidazole the imidazolide Ph2P(Ph)CH-CH2-C(0)-N2C3H3 (5) is formed which can be oxidized to give Ph2(0)P(Ph)CH-CH2-C(0)-N2C3H3 (6). 4a is coordinated in two different ways to transition metals. A 1:1 molar ratio of 4 a and LwMnTHF [LreMn = (iy 5 -C5H5)Mn(CO)2] yields the P-coordinated complex RC(0)P(Ph2)-MnL" (7a). Excess of L"Mn-THF results in the formation of P-and ^-coordinated LnMn-P(Ph2)C(0)(^ 2 -C2H2Ph)MnL" (8a). In the presence of HP(0)Ph2, 4 a is oxidized with molecular oxygen to give the phosphorylated alcohol RC[P(0)Ph2]20H (9 a). Via the oxide 10 a and the enol ether Ph2(0)P-CHPh-CH = C(0CH3)P(0)Ph2 (11a) the ester Ph2(0)P-CHPh-CH = C[0C(0)R]P(0)Ph2 (12 a) can be isolated from the Arbusov reaction of 3 a and CH3OPPh2. 
  Reference    Z. Naturforsch. 38b, 726—732 (1983); eingegangen am 19. Januar 1983 
  Published    1983 
  Keywords    Unsaturated Acylphosphanes, Reactivity, Complex Chemical Behaviour 
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 TEI-XML for    default:Reihe_B/38/ZNB-1983-38b-0726.pdf 
 Identifier    ZNB-1983-38b-0726 
 Volume    38 
8Author    Lothar WeberRequires cookie*
 Title    Übergangsmetall-Schwefelylid-Komplexe, XXII [1] Zur Reaktivität von DicarbonylnitrosyI-f/ 5 -thiacyclohexadienyl-l-oxid- Chromkomplexen gegenüber Phosphor-und Schwefelyliden Transition Metal Sulfur Ylide Complexes, XXII [1] Reactivity Studies of Dicarbonylnitrosyl-^-thiacyclohexadienyl-l-oxide Chromium Complexes with Phosphorus and Sulfur Ylides  
 Abstract    ?? 5 -Thiacyclohexadienyl-l-oxide chromium complexes 3a—d are generated by treatment of the 1-methyl-thiabenzene-l-oxide complexes la—d with Li[BHEt 3 ] and successive nitrosylation of the intermediates 2a—d. 3a—d react with Me 2 S(0) = CH 2 or Ph 3 P=CH 2 at a carbonyl ligand in an additon/transylidation process to yield the very sensitive products 5, 6a—d. 
  Reference    Z. Naturforsch. 40b, 373—379 (1985); eingegangen am 12. Oktober 1984 
  Published    1985 
  Keywords    Reactivity, ?; 5 -Thiacyclohexadienyl-l-oxide Complexes, Sulfur Ylides, Transylidation 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0373.pdf 
 Identifier    ZNB-1985-40b-0373 
 Volume    40 
9Author    Rajib Lai, DorisW. Olters, Heinrich VahrenkampRequires cookie*
 Title    Preparation and Reactions of the T etrahedrane Molecule Fe2(CO )6(P-/m -C 4Hg)2  
 Abstract    The F e2P2 tetrahedrane com pound Fe2(CO)f,(P—fBu)2 has been obtained by oxidation of Fe2(C O)A («-PH rB u)2. D ue to its short (206 pm) P —P bond it can be called a diphosphene com ­ plex. In contrast to this the P —P bond is its principal centre o f reactivity: CO , C2H 4, and C2H 2 (with concom itant hydrogenation) are inserted, H 2 and HC1 are added with P —P cleavage, and reductive cleavage occurs with L iB H E t,. The crystal structures of the title com pound and of its CO and C2H 4 insertion products have been determ ined. 
  Reference    Z. Naturforsch. 41b, 283—291 (1986); eingegangen am 23. Oktober 1985 
  Published    1986 
  Keywords    Tetrahedrane M olecule F e2P2, Synthesis, Reactivity 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-0283.pdf 
 Identifier    ZNB-1986-41b-0283 
 Volume    41 
10Author    E. Kkehard Lindner, Petra NeeseRequires cookie*
 Title    Darstellung und Eigenschaften von und Reaktionen mit metallhaltigen Heterocyclen, LII [1] Bindungs-und Strukturverhältnisse von Phosphidocobaltaten in Lösung und im festen Zustand Preparation and Properties of, and Reactions with, M etal-Containing Heterocycles, LII [1] Bonding and Structural Conditions of Phosphidocobaltates in Solution and in Solid State  
 Abstract    Reduction o f [(O C)3C oPPh2]" (la) with excess sodium granules affords [(O C)3CoPPh2]N a2 (3a) in solution as well as in solid state. H ow ever, in analogous reactions o f [(O C)3C oP R 2H ]2 (lb : R = C6H n ; lc : R = r-Bu) with excess sodium granules the m onovalent anionic com plexes [(O C)3C oP R 2H ]Na (2b, c) are obtained in TH F solution. 2 b , c cannot be isolated in solid state. A fter removal of TH F from their solutions the purified residues were identified by elem ental 
  Reference    Z. Naturforsch. 41b, 870 (1986); eingegangen am 26. Februar 1986 
  Published    1986 
  Keywords    Phosphidocobaltates, Structure, Reactivity, IR Spectra, N M R Spectra 
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 TEI-XML for    default:Reihe_B/41/ZNB-1986-41b-0870.pdf 
 Identifier    ZNB-1986-41b-0870 
 Volume    41 
11Author    Z. NaturforschRequires cookie*
 Title    Untersuchungen zur Synthese und biologischen Bedeutung von Glutaminsäure-l-semialdehyd als Vorstufe der Chlorophylle  
 Abstract    I n v e stig a tio n s o n th e S y n th e s is a n d B io lo g ic a l S ig n if ic a n c e o f G lu ta m ic -1-s e m ia ld e h y d e as a P r e c u r s o r o f t h e C h lo r o p h y lls H ans-U lrich Meisch und R aim und M aus Glutam ic-1-semialdehyde which is discussed to be involved in the early steps of chlorophyll biosynthesis, has been synthesized from glutam ic acid by reduction of several N-protected carboxylic acid derivatives like the N-CBO-glutamic acid -1-dim ethyl am ide or m ethylanilide, the pyroglutamic acid im idazolide and the acid chlorides of N -phthaloyl-glutam ic acid-5-methyl ester or 5-benzylester. The a-am inoaldehyde could only be generated in solution, where it is polymerized rapidly. Due to its instability, it is suggested th at glutam ic sem ialdehyde plays no role as a free metabolite in green plants. 
  Reference    Z. Naturforsch. 38c, 563—570 (1983); received M arch 4 1983 
  Published    1983 
  Keywords    Glutamic Semialdehyde, Synthesis, Reactivity, G lutam ic Acid, D erivatives 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0563.pdf 
 Identifier    ZNC-1983-38c-0563 
 Volume    38