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1977 (337)
101Author    D. Singh, H. B. SinghRequires cookie*
 Title    Metal Complexes with Biologically Active Substituted Hydroxy Compounds  
 Abstract    The synthesis of Cu(II), Mn(II), Fe(III), Ti(IV), Zr(IV), Ce(IY), Th(IV) and U02(II) complexes with 4-methyldaphnetin and 4-methylesculetin is described. Structural in­ formation on coordination of the ligand with metals has been obtained from infrared spectroscopy. Results of thermal analysis and magnetic measurements of some of these complexes are reported. 
  Reference    (Z. Naturforsch. 32b, 438—442 [1977]; received December 27 1976) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0438 
 Volume    32 
102Author    Requires cookie*
 Title    Study of the Reactivity of 2 -Cinnamoylbenzimidazole towards Thiourea, Urea, Hydrazines and Hydroxylamine Hydrochloride  
 Abstract    o o r o b , H . A. H a m m o u d a , a n d E. I s m a i l F acu lty o f Science, Mansoura U n iv ersity ; F a c u lty o f Science, Cairo U n iversity; N ational R esearch Centre, Cairo, E g yp t Pyrim idone, Pyrim idinethione, P yrazoline, Isoxazolin e, P yrrolo[l,2-a]benzim idazole 
  Reference    (Z. Naturforsch. 32b, 443—446 [1977]; received October 29 1976) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0443 
 Volume    32 
103Author    Requires cookie*
 Title    Reactions of Alloxan and Related Compounds  
 Abstract    A detailed investigation has been carried out on the effect of alloxan, alloxanic acid and ninhydrin on the rate of disappearance of alanine in buffered aqueous solution at pH 7 and on amino acids in blood both in vitro and in vivo. The results obtained indicate the pos­ sibility that the interaction of alloxan and tissue amino acids might have an important role in the diabetogenic effect of alloxan. 
  Reference    (Z. Naturforsch. 32b, 447—452 [1977]; received June 3 1976) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0447 
 Volume    32 
104Author    Requires cookie*
 Title    Complex of Diphenylcyclopropenone with Substituted Acetic Acid and Formic Acid  
 Abstract    N a r e n d r a S . S r i d h a r a D ep artm en t o f C hem istry, The U n iv ersity , L eicester LE 1 7 R H , England and R a j e n d r a S i n g h D ep artm en t o f C hem istry, M eerut College, M eerut [U. P.], India D iphenylcyclopropenone, B rom oacetic A cid, Trifluoroacetic Acid, B enzoylform ic Acid, NM R R eaction o f diphenylcyclopropenone w ith brom oacetic acid, trifluoroacetic acid and benzoylform ic acid leads to crystalline com plexes. 
  Reference    (Z. Naturforsch. 32b, 453—454 [1977]; received March 1 1976) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0453 
 Volume    32 
105Author    Requires cookie*
 Title    Organic Reaction Schemes and General Reaction-Matrix Types, II Basic Types o f Synthetic Transformations  
 Abstract    a r t a n d E n e a G a r a g n a n i M ontedison S. p. A ., Istitu to R icerche "G. D on eg a n i" , V ia del Lavoro 4, N ovara, Ita ly R eaction-M atrices, S ynthesis-Planning Organic syn th etic transform ations are described in term s o f a set o f 43 distinct general reaction-m atrix typ es, o f w hich te n account for rearrangem ent reactions only. The schem es identified conform p artially to th e sem i-em pirical rules governing syn th etic transform ations, as previously defined by U g i et a l. 30. 
  Reference    (Z. Naturforsch. 32b, 455—464 [1977]; received August 31 1976) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0455 
 Volume    32 
106Author    Requires cookie*
 Title    Organic Reaction Schemes and General Reaction-Matrix Types, III A Quantitative Analysis  
 Abstract    e a G a r a g n a n i a n d J a n C. J . B a r t M ontedison R & D D ivision , "G. D o n egan i" R esearch Laboratories, V ia del Lavoro 4, N ovara, Ita ly R eaction M atrices, Synthesis-planning A specialized se t consisting o f about 1,900 organic reactions has been analyzed to determ ine th e distribution o f reaction m atrices R according to a m athem atical m odel o f chem istry. The dynam ical properties o f th e data-base have a very u neven (exponential) distribution. T he results conform to the overall pattern o f previous more restricted random sam ple analyses. A subset o f ten R -m atrices accounts for over 92% o f th e one-step interconversions b etw een chem ically stable or well-defined species w hich describe a reac­ tion sequence. The im plications o f the findings for synthesis-planning are set out. 
  Reference    (Z. Naturforsch. 32b, 465—468 [1977]; received October 25 1976) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0465 
 Volume    32 
107Author    Requires cookie*
 Title      
 Abstract    sFe-N' | + C6H 5N H 2 (2 b) 3 x N -C 6H 5 abläuft. Das Anlagerungsprodukt 2 ist auch bei An­ wendung eines Überschusses an 1 nicht faßbar, da dieses durch ein weiteres Äquivalent Anilidionen nach (2 b) rasch deprotoniert wird. Somit entspricht die Gesamtreaktion (2 a + b) der Bildung von Pentacyanonitroferrat(II) im Aquosystem gemäß (1). Einen Hinweis auf das im Komplex als Ligand zu postulierende Phenylnitrosamid-Ion [HsCßNNO]-liefert das IR-Spektrum von 3. Dort tritt im Bereich der VasNO des [Fe(CN)sN02]4_1 eine starke Bande bei 1200 cm-1 auf, die wir der v NO-Schwingung zu­ ordnen. Die vCN von 3 bei 2090 cm-1 (Sch) und 2050 cm-1 (st) sind gegenüber denen von 1 (2170 bis 2142 cm-1) 4 stark erniedrigt. Die hieraus ables­ bare verstärkte n-Acidität der CN-Liganden in 3 ist zweifellos auf eine, im Vergleich zum NO in 1, geringere n -Akzeptorstärke des Phenylnitrosamid-Liganden zurückzuführen. Dieser scheint ein schwa­ cher Ligand zu sein, denn eine Suspension von 3 in fl. NH3 reagiert mit NaCN glatt zu [Fe(CN)e]4-. Bei der Umsetzung von 1 mit Natriumdiphenyl-amid oder Natrium-bis(trimethylsilyl)amid in fl. N H 3 wird als einzig faßbare Verbindung sogleich Na3[Fe(CN)sNH3] erhalten. Andere Pentacyano-nitrosylmetallate wie [Mn(CN)sNO]3_ (F no 13,2 mdyn • Ä_1) 6 und [Cr(CN)5NO]3-(F no -11,8 mdyn Ä"1) 6 sind unter denselben Bedingungen gegenüber diesen Amidionen und Anilidionen völlig resistent. Dieser negative Befund ist ein Hinweis darauf, daß auch in fl. N H 3 als Reaktionsmedium die nucleophile Angreifbarkeit des koordinierten NO+ einen ge­ wissen Mindestwert der NO-Kraftkonstanten vor­ aussetzt. 470 N otizen 
  Reference    (Z. Naturforsch. 32b, 469 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0469_n 
 Volume    32 
108Author    Requires cookie*
 Title    Darstellung des Benzolmangantricarbonyl-Kations aus Methylcyclopentadienylmangantricarbonyl Preparation of Cationic Benzene-manganese-tricarbonyl from Methylcyclopentadienyl-manganese-tricarbonyl  
 Abstract    P a u l B a c h m a n n , K a r l -R u d o l f R e p p u n d H e l l m u t S i n g e r U n iversität M ainz, F achbereich C hem ie, A bteilung für L ehram tskandidaten der Chemie 
  Reference    (Z. Naturforsch. 32b, 471 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0471_n 
 Volume    32 
109Author    Requires cookie*
 Title    Übergangsmetall-Carbin-Komplexe, XXVIII1  
 Abstract    Oxidative Abbaureaktionen von trans-Bromotetracarbonyl(phenylcarbin)chrom Transition Metal Carbyne Complexes, X X V III1 Oxidative Degradation Reactions of trans-Bromotetracarbonyl(phenylcarbyne)chromium E r n s t O t t o F i s c h e r , A l e x a n d e r R u h s u n d H a n s J ü r g e n K a l d e r A norganisch-Chem isches In stitu t der Technischen U n iv ersitä t M ünchen 
  Reference    (Z. Naturforsch. 32b, 473 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0473_n 
 Volume    32 
110Author    Requires cookie*
 Title    Eine Verfeinerung der Ba2CuF6-Struktur - Neutronenbeugungsuntersuchung am Kristallpulver  
 Abstract    A Refinement of the Ba2CuF 6 Structure by Powder Neutron Diffraction D. R e i n e n u n d H. W e it z e l F achbereich Chemie der U n iv ersitä t Marburg und In stitu t für P hysikalische Chemie der T echnischen H ochschule D arm stadt 
  Reference    (Z. Naturforsch. 32b, 476 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0476_n 
 Volume    32 
111Author    Requires cookie*
 Title    Preparation and Crystal Structure of  
 Abstract    NiHg of gradual improvement the pattern quality was good enough for the structure determination. According to the available crystal structure data on amalgams only two types of 1 : 1 alloys occur, i. e. B 2 (CsCl) and Llo (AuCu). The pronounced tendency of rare earths and actinides towards the former type remains to be answered, but it seems th a t the atomic size and the effect of increased sphericity m ay account for this. The obtained phase was, as expected, indexed as tetragonal a = 4.22Ä, c = 3.14Ä, c/a — 0.744. The relevant X-ray diffraction data given in Table I prove th at the structure is of the Llo-type, indeed. Table I I contains the data for all hitherto known binary and ternary amalgams of transition metals belonging to this structure class. The only apparent regularity is th a t the c/a ratio for amalgams of the subgroup V III elements Ni, Pd and P t increase as the atomic number becomes larger. Since the intensity calculations proved th a t mercury atoms occupy the positions: 0 , 0 , 0 ; 1 /2 , 1 /2 , 0 ; nickel atoms 1 /2 , 0 , 1 /2 ; 0 , 1 /2 , 1 /2 ; the following inter­ atomic distances are obtained: H g-H g 2.96 Ä, H g-N i 2.63 Ä. Both of them are in accordance with the accepted values3. Table I. D iffractom eter data for N iH g (Cu target, nickel filter). h k l d0 d c Io Io 
  Reference    (Z. Naturforsch. 32b, 479 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0479_n 
 Volume    32 
112Author    Requires cookie*
 Title    X H-, 13C-, 29Si-NMR-und 35 37C1-NQR-Spektren von (Chlormethyl)silan, H3SiCH2Cl  
  Reference    (Z. Naturforsch. 32b, 481 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0481 
 Volume    32 
113Author    CisRequires cookie*
 Title    Zur cis-frans-Isomerisierung von D iaza-/3, / 3-diphosphetidinen  
 Abstract    /trans Isom erisation of Diaza-A3,A3-diphosphetidines W e r n e r Z e i s s und J o s e f W e i s In stitu t für Anorganische Chemie der U n iversität M ünchen 
  Reference    (Z. Naturforsch. 32b, 485 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0485 
 Volume    32 
114Author    Requires cookie*
 Title    Darstellung, Schwingungsspektren und Röntgenstrukturanalyse von Trifluor-und Trichloracetyltrischwefeltrinitrid, CX3CO-NS3N2  
 Abstract    Synthesis, V ibrational S pectra, an d X -ra y S tru ctu re Analysis of Trifluoro an d T richloroacetyl T risu lfu rtrin itrid e, C X 3C O -N S3N 2 1 
  Reference    (Z. Naturforsch. 32b, 488 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0488 
 Volume    32 
115Author    W. Muschick, Hk Müller-BuschbaumRequires cookie*
 Title    Ein Beitrag zur Kristallchemie dreiwertiger Seltenerdoxide Zur Stabilisierung der m onoklinen B-Form  
 Abstract    Single crystals of 1 — a'Ho203 : xCaO (x = 0.07), CaHoC>2.5 (A) and Cao.5H 01.5O2.75 (B) were prepared by high temperature reaction and investigated with X-ray single crystal data. It can be shown that small amounts of CaO stabilize the monoclinic B-Typ of rare earth oxides. Phase (A) and (B) cannot be seen as a stabilized B-type crystal because they have an new crystal structure with space group C.7h-P 2 i/m, a = 656.6, b = 356.7, c = 529.4pm , ß = 92.3°; a = 650.2, b = 352.4, c = 584.5, ß = 92.3°. 
  Reference    (Z. Naturforsch. 32b, 495—498 [1977]; eingegangen am 15. Februar 1977) 
  Published    1977 
  Keywords    Holmium, Thulium, Calcium, X-ray, Crystal Structure 
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 Identifier    ZNB-1977-32b-0495 
 Volume    32 
116Author    Requires cookie*
 Title    .3.5-Triaza-7-phosphaadamantan (Monophospha-urotropin)  
 Abstract    1, 3,5-Triaza-7-ph o sp h aad am an tan e (M onophospha-urotropine) 
  Reference    (Z. Naturforsch. 32b, 499 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0499 
 Volume    32 
117Author    Z.Requires cookie*
 Title    Untersuchung der Mx-Phase des V1_rF er0 2-Systems  
 Abstract    In v estig atio n of th e Mr P hase in th e System V ^F e^O a J . P e b l e r , K . S c h m i d t u n d H. W a s i n s k i Sonderforschungsbereich 127 (K ristallstruktur und chem ische Bindung) F achbereich Chemie der U n iversität Marburg M össbauer Spectra, Phase T ransition, X -ray Powder P attern The Mössbauer effect o f 57F e has been stu d ied in th e series o f com pounds V ^ F e^ C ^ for very low' F e concentrations betwreen 4.2 and 500 K . Three insulating phases are clearly distinguished. In th e low tem perature M i-phase only one F e-site is seen for x ^ 0.0026 in accordance w ith th e in su latin g phase o f VO2. B u t for higher F e concentra­ tions, x 0.006, tw o iron sites can be resolved by their electric field gradients in th e Mi-phase. The D ebye-W aller factor show s an anom alous behaviour for both iron concentra­ tions in the M i-phase. 
  Reference    (Z. Naturforsch. 32b, 507—512 [1977]; eingegangen am 27. Dezember 1976/16. F ebruar 1977) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0507 
 Volume    32 
118Author    Requires cookie*
 Title    NMR-Untersuchungen an Organoelement(IVb)-phosphinen, II1  
 Abstract    Substituenteneinflüsse auf die 31P-chem ischen Verschiebungen von Trim ethylelem ent(IV b) -phosphinen N M R -Studies on O rganoelem ent(IV b)-phosphines, I I 1 Influence of L igands on th e 31P-C hem ical S hift of T rim ethylelem ent(IV b)-phosphines 
  Reference    (Z. Naturforsch. 32b, 513 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0513 
 Volume    32 
119Author    Requires cookie*
 Title    Linear Chain Bis(a,/?-dionedioximato)metal Compounds of the Nickel Triad: Solid State Design by Molecular Engineering  
  Reference    (Z. Naturforsch. 32b, 516 [1977]) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0516 
 Volume    32 
120Author    W.Requires cookie*
 Title    Reaktionen von Halogeno-Phosphin-M etall(II)-K om plexen mit organischen Aziden. Phosphatriazen-Kobalt(II)-Kom plexe Reactions of Halogeno Phosphine M etal(II) Complexes with Organic Azides. Phosphatriazene Cobalt(II) Complexes  
 Abstract    o l f g a n g B e c k , W o l f r a m R i e b e r und H e l m u t K i r m a i e r Phosphinimine Cobalt(II) Complexes, Phosphatriazenes The phosphine complexes Co(PR3)2 X 2 (X = CI, Br; R = E t, Ph, CeHn) react with furoyl-azide (furNs) at 25 °C to give the phosphinimine compounds Co(furN;=PR3)2X 2 . At lower temperatures the intermediate complex Co[furN3P(C6 H n)3 ]Br2 • E t2 0 with phospha­ triazene as ligand could be isolated. 
  Reference    (Z. Naturforsch. 32b, 528—532 [1977]; eingegangen am 22. Dezember 1976) 
  Published    1977 
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 Identifier    ZNB-1977-32b-0528 
 Volume    32 
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