bluuebunny/crossref_metadata_2025_split huggingface dataset:
Photochemische Reaktionen von Re2(CO)10 in Gegenwart von Cyclooctatetraen und 1.3-Butadien / Photochemical Reactions of Re2(CO)10 in the Presence of Cyclooctatriene and 1,3-Butadiene
Authors: Guggolz Ernst , Oberdorfer Franz , Ziegler Manfred L. 
Published: February 2015

Abstract
Rhenium Carbonyl Olefin Complexes Re2(CO)io has been photolyzed in the presence of cyclooctatetraene, 1,3-butadiene and 1,4-pentadiene, respectively. In pentane solutions the species (CO)4Re-μ-(η3 :η1-C4H6)Re(CO)5, (CO)4Re-μ-(η2:η2-C4H6]Re(CO)4 (11) and HRe3(CO)14 could be isolated with 1,3-butadiene. C8H8 yielded several compounds of which the following could be unequivocally characterized (CO)4Re-μ-(η3:η1-C8H8)Re(CO)5 (14), (η2-C8H8)Re(CO)4-μ-(1,2,8-η3:5-η1-C8H8)-Re(CO)4 and (CO)3Re-μ-(η4:η4-C8H8)Re(CO)3.11 and 14 have been characterized by X-ray structure analysis.
Anhydride und Thioanhydride von tert-Butylstibinig-und -stibonigsäuren / Anhydrides and Thioanhydrides of tert-Butylstibinous-and Stibonous Acids
Authors: Breunig Hans Joachim , Kischkel Helmut 
Published: February 2015

Abstract
The reactions of di-tert-butylantimony chloride with sodium hydroxide or sodium sulfide yield new anhydrides or thioanhydrides of tert-butylstibinous acids, which have structures with bridging oxygen or sulfur atoms. Analogous reactions of tert-butylantimonydichloride produce the first examples of anhydrides or thioanhydrides of tertbutylstibonous acids, which have cyclic structures (t-BuSbE)n E = O, n = 3, 4; E = S, n = 2, 3, 4, 5. Structural evidence is based on IR, 1H NMR and MS data.
Koordinationschemie reduzierter N-Heterozyklen. Komplexe des Pyrazin-Radikalanions mit Phenylmetallkationen +MPh von Beryllium, Magnesium und Zink / Coordination Chemistry of Reduced N-Heterocycles. Complexes of Pyrazine Anion Radical with Phenyl Metal Cations +MPh of Beryllium, Magnesium and Zinc
Authors: Kaim Wolfgang 
Published: February 2015

Abstract
The diphenyls MPh2 (M = Be, Mg, Zn, Cd, Hg) have been reacted with pyrazine (Pz) in tetrahydrofuran. Only the magnesium derivative undergoes electron transfer to yield the 1:1 radical complex [Pz(MgPh)]·. However, in the presence of sodium or potassium persistent 1:2 complexes [Pz(MPh)2]+. are formed with M = Be, Mg, Zn. Use of the higher homologues CdPh2 and HgPh2 leads to reduction to the metals. The 1:2 complexes have been characterized by ESR spectroscopy; metal coupling constants of 9Be, 25Mg and 67Zn could be determined in natural isotopic abundance.
Condensation of 3-Aryl-2,4-dicarboethoxy-5-hydroxy-5-methylcyclohexanones with o-Phenylenediamine, Thiourea, α,β-Unsaturated Ketones and Hydrazines
Authors: Metwally Mohamed Abbas , Afsah El-Sayed , Amer Fathy A. 
Published: February 2015

Abstract
Reaction of the title compound 1 with o-phenylenediamine afforded either the diaze-pinones (2) or the amides (3). Treatment of 1 with thiourea gave the thiouracils (4). The indazoles (5) gave diacetyl or diphenylsulphonyl derivatives (6, 7) on treatment with acetic anhydride or benzenesulphonyl chloride, respectively. Condensation of 1 with benzenesulphonhydrazide gave the 2-substituted indazole (8). Michael condensation of 1 with anisalcyclohexanone gave 9.
Polymergebundenes Sulfonylazid zur entformylierenden Diazogruppen-Übertragung und zur Diazo -cyclopolyen -Synthese / Polymer Anchored Sulfonylazide for Deformylating Diazo Group Transfer and the Synthesis of Diazo-cyclopolyenes
Authors: Dürr Heinz , Hauck Gerhard , Brück Wolfgang , Kober Helge 
Published: February 2015

Abstract
Polymer anchored sulfonylazide is compared with its efficiency in the diazogroup transfer reaction of tosylazide. The resulting yields with the polymeric reaction are slightly lower than with tosylazide.
However the greater thermostability of polymeric sulfonyl azide and its workup procedure make this alternative very attractive for synthesis. The reaction of polymeric sulfonyl azide with cyclic polyenes gives very small yields compared with the monomeric reaction. The attempt to generate diazocyclononatetraene by an alternative route leads only to the secondary product namely indene. At low temperature, and intermediate diazo-compound is, however, observed, which is tentatively assigned to structure 12.
3.5-Dihydroxy-6.7.8-trimethoxyflavon aus Heiichrysum graveolens: Bestätigung der Konstitution / Confirmation of the Structure of an Extractive from Helichrysum graveolens as 3,5-Dihydroxy-6,7,8-trimethoxyflavone
Authors: Hansel Rudolf , Khaliefi Faeis , Pelter Andrew 
Published: February 2015

Abstract
By X ray and NMR techniques the flavone structure for an extractive from Helichrysum graveolens has been confirmed. An extractive from an Artemisia sp. previously assigned the same structure must therefore have a different constitution.
Ein Triarsanato(1.3)-Chelat des Titans / A Triarsanato(1,3) Chelate of Titanium
Authors: Köpf Hartmut , Gorges Ulrich 
Published: February 2015

Abstract
When the cyclopentaarsane (AsC2H5)6 is reacted in a 1:2 or 1:5 molar ratio with metallic potassium in THF, soluble dipotassium catenaarsanes of the assumed stoichiometry K2(ASC2H5)5 (1) or K2(ASC2H5)2 (2), respectively, are formed. On reaction with (C5H5)2TiCl2 in THF, both the red 1 or the greenish 2 lead to the same dark-brown, airsensitive triarsanato complex (C5H5)2Ti(AsC2H5)3 (3).
Metallorganische Verbindungen der Lanthanoiden, XII [1] Dicyclopentadienyl(diorganophosphin) -Derivate von Terbium, Holmium, Erbium, Thulium, Ytterbium und Lutetium / Organometallic Compounds of the Lanthanides, XII [1] Dicyclopentadienyl(diorganophosphine) Derivatives of Terbium, Holmium, Erbium, Thulium, Ytterbium, and Lutetium
Authors: Schumann Herbert , Frisch Georg-Michael 
Published: February 2015

Abstract
Organolanthanide Compounds, Organophosphines Lithium (di-terJ-butyl)phosphide and lithium(£erf-butyl)phenyl phosphide react with the dicyclopentadienyllanthanide chlorides of terbium, holmium, erbium, thulium, ytterbium, and lutetium with elimination of lithium chloride and formation of the corresponding dicyclopentadienyl(organopho8phine) lanthanide derivatives. NMR data of the lutetium compounds are given.
Zur Hochdruckpolymorphie von Bal2 / High Pressure Polymorphism of Bal2
Authors: Beck H. P. 
Published: February 2015

Abstract
High pressure investigations of Bal2 yielded a new polymorph, which could be quenched and characterized by X-ray methods. PbCl2-type Bal2 is converted to an anti-Fe2P-type structure with more regular coordination polyhedra and an increase in effective coordination numbers. We discuss changes in bonding type by comparing the Madelung part of lattice energy in the two polymorphs.
Darstellung und Charakterisierung von Selenophosgen / Preparation and Characterization of Selenophosgene
Authors: Darmadi Alexius , Haas Alois , Willner Helge 
Published: February 2015

Abstract
Selenophosgene was prepared for the first time by vacuum pyrolyses of 2,2,4,4-tetra-chloro-1,3-diselenetane. The dark blue compound, stable only below -130 °C, was characterized by mass, low temperature UV, IR matrix and Raman matrix spectroscopy.
Struktur und Entstehung des farbigen Simon-Awe-Komplexes / Structure and Formation of the Coloured Simon-Awe Complex
Authors: Wiegrebe Wolfgang , Vilbig Margit 
Published: February 2015

Abstract
A nice blue colour arises from acetaldehyde, Na2[Fe(CN)5NO] • 2 H2O and piperidine (Simon-Awe Reaction). Structure elucidation of the blue material (leading to 1) by combustion analysis, ligand exchange to [Fe(CN)6]4-, reduction to β-aminoethanol and hydrolysis to glyoxal are described. - The blue complex does not contain the amine moiety but is formed via an enamine, an colourless immoniumsalt 2 and its hydrolysis to 1. - Loach's experiments are re-evaluated
Lanthaniden-Verschiebungen in der 1H- und 13C-Kernresonanzspektroskopie zur Konstitutionsermittlung von Thiadiazoloxiden / Lanthanide Induced Shifts in the 1H and 13C Nuclear Magnetic Resonance Spectroscopy for Structure Elucidations of Thiadiazole Oxides
Authors: Plücken Udo , Meier Herbert 
Published: February 2015

Abstract
A systematic investigation of the LIS-method for structure elucidations is performed on the basis of thermally generated monoxides of 1,2,3-thiadiazoles. A calculation process for the evaluation of lanthanide induced shifts according to the McConnell-Robertson equa-tion was developed. The program can be applied to underdetermined systems with fewer variables than chemically not equivalent X H plus 13 C nuclei. A quality criterium for the method is given by 4-phenyl-l,2,3-thiadiazole-3-oxid -wellknown by an X-ray analysis.
Intradiol Aromatic Ring Cleavage in a Dioxygenase Model System
Authors: Brown Dennis G. , Hughes William J. 
Published: February 2015

Abstract
Dioxygenase Model, Copper, Catechol The complex (3-n-nonylcatecholato)(1,10-phenanthroline)copper(II) reacts with molecular oxygen to give an isomeric mixture of 2-n-nonylmuconic acid and several secondary oxidation products. The catecholato ligand is oxidatively cleaved in an intradiol fashion reminescent of the reactions catalyzed by intradiol aromatic dioxygenases. The 1,10-phenanthroline ligand can be quantitatively recovered and is not oxidized. In addition to characterization of oxidation products, the kinetics of oxygen consumption have been analyzed. The rate law for oxygen uptake is -d[O2]/dt = k[O2] [copper]2 .
Solid-Phase Synthesis of Peptides via a,β-Unsaturated Amino Acids. Incorporation of the Amide Gronp in encZo-Positions
Authors: Nöda Kosaku , Gross Erhard 
Published: February 2015

Abstract
Dehydroalanine is introduced as pseudoprotecting group for the to-amide function of Asn and Gin in solid-phase peptide synthesis. Using Boc-X(Dha-NHMe)-OH (X = Asp or Glu), the model peptides,
L-Leu-L-Asn-Gly-NH2 and
L-Leu-Lr-Gln-Gly-NH2, were synthesized
Darstellung von triorganyl-und dialkylaminosubstituierten Fluorphosphoniumsalzen / Preparation of Triorgano-and Dialkylamino-substituted Fluorophosphonium Salts
Authors: Bartsch Rainer , Stelzer Othmar , Schmutzler Reinhard 
Published: February 2015

Abstract
Fluorophosphonium bromides are easily accessible by ligand exchange reactions between bromophosphonium bromides and difluorophosphoranes. The reaction between fluorophosphoranes of different Lewis acidity is investigated. Fluorophosphonium-organo-fluorophosphates are formed in some cases by transfer of fluoride ion. Alkylamino-substituted fluorophosphonium bromides may be obtained by Br/F-exchange in bromo-phosphonium bromides with sodium fluoride. The products are characterized by means of 1 H, 19 F, and 31 P NMR spectroscopy.
Umlagerungsreaktionen von lithiierten Silylhydroxylaminen mit Fluorsilanen / Rearrangement Reactions of Lithiated Silylhydroxylamines with Fluorosilanes
Authors: Bentmann Dieter , Klingebiel Uwe 
Published: February 2015

Abstract
Halogenosilanes, with the exception of CH3SiF3 and SiF4, react with lithiated bis-(trimethylsilyl)hydroxylamine in ether to yield substituted hydroxylamines, and LiF. In the analogous reaction with trifluoromethylsilane and tetrafluorosilane the products undergo an intramolecular rearrangement to form silylaminosiloxanes.
(MeSn)4Se6, Geometrie und Schwingungsformen eines Adamantan-Gerüstes aus Zinn-Selen-Bindungen / (MeSn)4Se6, Geometry and Vibrational Modes of an Adamantane Framework Formed by Tin-Selenium Bonds
Authors: Blecher Axel , Dräger Martin , Mathiasch Bernd 
Published: February 2015

Abstract
The title compound has been synthesized by reaction of MeSnBr3 and NaHSe in aqueous solution. The X-ray structure determination showed adamantane-like molecules (Sn-Se 253(1), Sn-C 215(1) pm) arranged in a quasi hexagonal-close packing. The atomic coordinates were used for an analysis of the vibrational spectra, yielding information on the distribution of the potential energy for the normal modes in terms of internal co-ordinates and a set of force constants. The valence force constants f(Sn-Se) 154(6), f(Sn-C) 216(2) N/m) are compared with those in related monocyclic molecules.
Trigonal Prismatic or Octahedral Surrounding in Sheet Oxides ?
Authors: Delmas Claude , Braconnier Jean-Jacques , Fouassier Claude , Hagenmuller Paul 
Published: February 2015

Abstract
Layer Oxides, Intercalate, Trigonal Prismatic of Octahedral Surrounding According to the oxygen packing two types of alkali ion surroundings (octahedral or trigonal prismatic) are possible in the AxMO2 sheet oxides or the related A2MO3 compounds. The stability of both environments is discussed from the geometrical and electrostatic view points. Structural transitions to metastable forms can be induced by high pressure, intercalation, desintercalation or exchange reactions. The possibility of room temperature transformations can be anticipated from the relationships between the various oxygen packings.
Thio-hydroxoanionen des Germaniums: Darstellung, Struktur und Eigenschaften von Na2GeS2(OH)2 · 5 H2O / Thio-hydroxo Anions of Germanium: Preparation, Structure and Properties of Na2GeS2(OH)2 · 5 H2O
Authors: Krebs Bernt , Wallstab Hans-Joachim 
Published: February 2015

Abstract
Pure thio-hydroxo-germanates can be prepared from aqueous solutions by reactions of stoichiometric amounts of either sodium sulfide and GeO2, or NaOH and GeS2. The preparation of colourless crystalline Na2GeS2(OH)2 · 5 H2O is reported. The compound is characterized by a single-crystal X-ray structure analysis. It is orthorhombic, space group Pbcn, with a = 10.752(2), b= 13.787(2), c = 14.150(2) Å. The structure contains novel monomeric GeS2(OH)2
2- anions with Ge-S bond distances of 2.150(1) and 2.145(1) Å and with Ge-O lengths of 1.809(3) and 1.815(3) Å. An extensive S ··· HO-and O -HO-hydrogen bond system connects the anions with the octahedrally coordinated Na+ ions. The vibrational spectra are reported. The symmetric GeS2 andGeO2 stretching vibrations in the anion are observed at 415 and 618 cm-1.
Ternary Intercalation Compound of Graphite with Aluminum Fluoride and Fluorine
Authors: Nakajima Tsuyoshi , Kawaguchi Masayuki , Watanabe Nobuatsu 
Published: February 2015

Abstract
A ternary intercalation compound of graphite with AlF3 and F2, CxF(AlF3)y was prepared under fluorine atmosphere at temperatures of 20-400 °C. The typical 1st stage compound has a composition of C6F(AlF3)0,15 with a repeat distance of 940 pm. Rapid progress in the reaction led of the formation of graphite fluoride, (C2F)n. ESCA spectra indicate that the chemical bond between host graphite and intercalated fluorine has nearly covalent nature similar to that for (C2F)n.
Ligandenstabilisierung durch Komplexbildung: P.P′.P″ -Triaminocyclotriphosphazan und adamantananaloges Tetraphosphorhexaimid / Stabilisation of Ligands by Complex Formation: P,P′,P″ -Triaminocyclotriphosphazane and an Adamantane-Analogous Tetraphosphorus Hexaimide
Authors: Nöth Heinrich , Thorn Volker 
Published: February 2015

Abstract
The thermal decomposition of (CO)5MP(NH2)3 (M = Cr, Mo, W) has been studied. No definite products were obtained for M = W but the molybdenum complex yielded [(CO)5MoP]4(NH)6. The same type of complex results with M = Cr, in addition to [(CO)5CrP(NH)NH2]3. The pentacarbonylchromium groups may be removed from the adamantane type [(CO)5CrP]4(NH)6 with sulfur. The new compound S4P4(NH)6 results in this reaction. This compound is also a by-product in the thermal decomposition of SP(NH2)3. Attempts to prepare P4(NH)6 by desulfurisation from S4P4(NH)6 or from the chromium complex failed.
Cyclodiaza - λ6-thiane / Cyclodiaza-λ6-thianes
Authors: Tesky Frank-Michael , Mews Rüdiger , Krebs Bernt 
Published: February 2015

Abstract
From sulfurtriimides and N-perfluoroalkyl-isocyanates or -sulfinyl-amines SSS′S′-tetra-imino-(11 a-c), SS′-dioxo-SS′-di-imino-(19 and 28), and SSS′-tri-oxo-S′-imino-cyclodiaza-λ6 -thianes (34) were prepared. The structures of 11 b, 19 and 28 are discussed, general rules for the stability of these ring systems are derived.
Chemie polyfunktioneller Liganden, 69 [1] Über drei Organo-Arsen-Käfigverbindungen mit Noradamantanstruktur / Chemistry of Polyfunctional Ligands, 69 [1] Three Organo-Arsenic Cage Compounds with Noradamantane Structure
Authors: Ellermann Jochen , Lietz Martin 
Published: February 2015

Abstract
The reaction of l.l.l-tris(diiodarsinomethyl)ethane, CH3C(CH2Asl2)3 (1), with H2C(COOC2H5)2, H2C(COOCH3)2 and H2C(COC6H5)2 in presence of the auxiliary base (C2H5)3N gives the noradamantane structured compounds CH3C(CH2As)3E2 [E=C(COOC2H 5)2 (2), C(COOCH3)2 (3) and C(COC6H5)2 (4)].
The new compounds have been characterized by mass spectrometry and infrared, Raman and 1H NMR spectroscopy.
Sn21Cl16(OH)14O6, das sogenannte basische Zinn(II)-chlorid [1] / Sn21Cl16(OH)14O6, the So-called Basic Tin(II) Chloride
Authors: Schnering Hans Georg von , Nesper Reinhard , Pelshenke Hermann 
Published: February 2015

Abstract
Sn21Cl16(OH)14O6 has been shown to be the correct composition of the so-called basic tin(II) chloride. Well crystallized colourless platelets of pearly luster were precipitated from homogeneous solution. The structure (single crystal X-ray diffraction data, corrected for absorption and twinning, R32-D3
7, a = 1001.8 pm, c = 4403.0 pm, Z = 3, R = 0.045) is characterized by two different nets M1 = 2
∞ [Sn5(OH)6Cl6]2- and M2= 2
∞[Sn8O3(OH)4Cl3]3+ stacked along [001] with intercalated Cl- ions. M1 and M2 consist of condensed [Sn(OH)3] and [Sn(OH)2Cl2] or [Sn(OH)3] and [Sn(OH)2Cl]-type groups, respectively. M2 contains additionally the new cubane group [Sn4O3(OH)] which is linked by [Sn(OH)3]- and [SnCl]-fragments. The negative charge distribution seems to dominate the arrangement of chlorine atoms, oxygen atoms and lone pairs leading to well constructed hexagonal nets. All but one of the Sn atoms exhibit the typical ψ-trigonal pyramidal coordination. The ψ-trigonal bipyramidal [Sn(OH)2Cl2]-coordination of Sn(4) can be interpreted as a reaction-transition state.
Das Allopolarisierungsprinzip und seine Anwendungen, VI [1] Die Alkylierung von Enolatanionen: Polarität und Regioselektivität / The Allopolarization Principle and its Applications, VI [1] The Alkylation of Enolate Anions: Polarity and Regioselectivity
Authors: Gompper Rudolf , Vogt Hans-Hubert , Wagner Hans-Ulrich 
Published: February 2015

Abstract
The O/C methylation ratio in the reaction of sodium enolates with dimethylsulfate depends on the polar(electronic) effect of substituents. The relative π-charge density Px/y = 1x/1y can be used as a measure for the polarity of ambifunctional anions; in case of enolate anions Po/c = 1o/1c-The change of the regioselectivity Sf = log Qo/Qc in the alkylation of enolates is a function of the change in the polarity Po/c; ⊿Sf = f (⊿Px/y). The polar effect of substituents influences the charge control during the alkylation process via a change of the polarity of the enolate system: The higher the polarity of the anion, the stronger the charge control and the higher the yield of enol ether (O-alkylation).
Übergangsmetallkomplexe mit Schwefelliganden, XI* Molybdän-Oxo-Komplexe des Typs [Mo(IV)(O)(S2)2], [Mo(VI)(O)2(S4)], [MO(IV)(O)(S4)] und [Mo(IV)(O)(S5)] mit zwei-, vier- und fünfzähnigen Thioether-thiolat-Liganden (Sx = mehrzähniger Thioether-thiolat-Ligand) / Transition Metal Complexes with Sulfur Ligands, XI* Molybdenum Oxo Complexes of the Type [Mo(IV)(O)(S2)2], [Mo(VI)(O)2(S4)], [MO(IV)(O)(S4)] and [Mo(IV)(O) (S5)] with Bi-, Tetra- and Pentadentate Thioether-Thiolate Ligands (SX = Multidentate Thioether-Thiolate Ligand
Authors: Sellmann Dieter , Zapf Lothar 
Published: February 2015

MoCl
Reacting [Mo(O)2(acac)2] (acac- = acetylacetonate) with the tetradentate thioether-thiol ligand 2,3,8.9-dibenzo-1,4,7,10-tetrathiadecane (dttd-H2) yields cis-[Mo(O)2(dttd)] ; this compound is reduced by PPh3 to give [MoO(dttd)], which is also obtained from [MoCl2(dttd)] and H2O. Depending upon the concentrations of the reactants [4(THF)2], CH
3SC6H4SH and H2O , in THF the products [MoO(CH
3SC6H4S)2] or [MoCl2(CH3SC6H4S)2] are formed. In the analogous reaction between [MoCl4(THF)2] and the pentadentate ligand 2,3,11,12-dibenzo- 1,4,7,10,13-pentathiatridecane (dpttd-H2) in THF/H2O. [MoO(dpttd)] is obtained exclusively. Due to their poor solubility, the Mo(IV)-oxo complexes show only limited reactivity only; with NO reductive nitrosylation to cis-Mo(NO)2 complexes is observed.
Synthesen von Emodinaldehyd [1] / Synthesis of Emodine Aldehyde [1]
Authors: Thiem Joachim , Wessel Hans-Peter 
Published: February 2015

9
By chromium trioxide oxidation and subsequent acid hydrolysis triacetyl emodine (3) was transferred to the aldehyde in a two-step synthesis. In a more favourable sequence 3 was reacted to the bromomethyl derivative 4 and this solvolyzed to the citreoroseine derivative 5. A second NBS reaction gave 8 which after acid hydrolysis led to emodine aldehyde (9). This five-step process proceeded without chromatographic separation in 27% overall yield.
Substitutionsreaktionen an 3,7-Dialkoxy-4H,8H-benzol(1,2-c:4,5-c′)diisoxazoI- 4,8-dionen und ihren Derivaten — synthetische Untersuchungen mit elektronenreichen Olefinen und anderen Nukleophilen / Substitution-Reactions at 3,7-Dialkoxy-4H,8H-benzol(1,2-c:4,5-c′)diisoxazole-4,8-diones and of its Derivatives — Synthetic Research with Electron-Rich Olefins and Nucleophiles
Authors: Neidlein Richard , Klotz Udo J. 
Published: February 2015

3, 5, 8a-8d, 10
The syntheses of the compounds and 12a-12d by substitution-reactions, the different spectroscopic results are reported in detail.
Two lithium tricyanomethanide compounds: syntheses and single-crystal structure determination of LiK[C(CN)3]2 and Li[C(CN)3]·½ (H3C)2CO
Authors: Reckeweg Olaf , DiSalvo Francis J. 
Published: February 2015

Abstract
The new compounds LiK[C(CN)3]2 and Li[C(CN)3]·½ (H3C)2CO were synthesized and their crystal structures were determined. Li[C(CN)3]·½ (H3C)2CO crystallizes in the orthorhombic space group Ima2 (no. 46) with the cell parameters a=794.97(14), b=1165.1(2) and c=1485.4(3) pm, while LiK[C(CN)3]2 adopts the monoclinic space group P21/c (no. 14) with the cell parameters a=1265.7(2), b=1068.0(2) and c=778.36(12) pm and the angle β=95.775(7)°. Single crystals of K[C(CN)3] were also acquired, and the crystal structure was refined more precisely than before corroborating earlier results.
Recovery from alopecia areata in a patient with autoimmune polyglandular syndrome type 3
Authors: Makino Shinya , Uchihashi Takeshi , Kataoka Yasuo , Fujiwara Masayoshi 
Published: February 2015

Summary
Recovery from alopecia is rare in autoimmune polyglandular syndrome (APS). A 41-year-old male was admitted to our hospital with hyperglycemia. He developed alopecia areata (AA) 5 months before admission and developed thirst, polyuria, and anorexia in 2 weeks. His plasma glucose level upon admission was 912 mg/dl (50.63 mmol/l) and HbA1c was 13.7%. Although urinary and plasma C-peptide levels showed that insulin secretion was not depleted, anti-insulinoma-associated antigen 2 antibody was present. In addition, measurement of thyroid autoantibodies revealed the presence of Hashimoto's thyroiditis. These findings suggested a diagnosis of APS type 3. The patient has showed signs of improvement with the continuation of insulin therapy. During the successful control of diabetes, he had total hair regrowth within 2–3 months. Human leukocyte antigen typing showed that DRB1*1501-DQB1*0602 and DQB1*0301 were present. Similar cases should be accumulated to clarify the association of APS type 3 with recovery from AA.

Learning points

Alopecia in diabetic patients is a suspicious manifestation of autoimmune type 1 diabetes.

Patients with autoimmune type 1 diabetes specifically manifesting alopecia should be further examined for diagnosis of APS.

Insulin-mediated metabolic improvement may be a factor, but not the sole factor, determining a favorable outcome of alopecia in patients with autoimmune type 1 diabetes.