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1Author    Insan Boy, Gerhard Cordier, Brigitte Eisenmann, Rüdiger KniepRequires cookie*
 Title    Oligomere Tetraeder-Anionen in Borophosphaten: Darstellung und Kristall­ strukturen von NaFe[BP20 7(0H )3] und K2 Fe2 [B2 P4 0 1 6 (0 H)2 ] Oligomeric Tetrahedral Anions in Borophosphates: Synthesis and Crystal Structures of NaFe[BP20 7(0 H )3] and K2Fe2[B2P40 16(0 H )2]  
 Abstract    Crystals of the title compounds were grown under hydrothermal conditions. The crystal structures were determined by single crystal data. NaFe[BP20 7(0 H)3] (monoclinic, C 2/c, a = 1042.0(2), b = 821.5(1), c = 921.7(1) pm, ß = 116.60(1)°, Z=4): The crystal structure contains isolated anions [BP20 7(0 H)3]4~, which correspond to trinuclear units P 0 l/20 3-B 0 2/ 2(0 H)2-P 0 1/ 20 2(0 H) of corner sharing tetrahedra. Fe3+ is coordinated octahedrally by oxygen, Na+ is 8 -fold coordinated by oxygen forming cubes. K2Fe2 [B2P40 16(0 H)2] (triclinic, P i, a = 516.7(1), b = 808.9(1), c = 834.0(1) pm, a = 87.06(f), ß = 80.21(1), 7 = 86.59(1)°, Z = 1): The crystal structure contains isolated anions [B2P40 16(0 H)2]8_. Four-membered rings of tetrahedra with two additional terminal phosphate groups are formed by condensation of two trinuclear units P 0 1/ 20 3-B 0 3/ 2(0 H)-P 0 2/ 20 2. Fe3+ is in an octahedral and K+ in an irregularly 10-fold coordination by oxygen. 
  Reference    Z. Naturforsch. 53b, 165—170 (1998); eingegangen am 13. Oktober 1997 
  Published    1998 
  Keywords    Boron, Tetrahedral Anions, Phosphorus 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0165.pdf 
 Identifier    ZNB-1998-53b-0165 
 Volume    53 
2Author    Insan Boy, G.Erhard Cordier, Rüdiger KniepRequires cookie*
 Title    Oligomere Tetraeder-Anionen in Borophosphaten: Sechserringe mit offenen und cyclischen Phosphat-Verzweigungen in der Kristallstruktur von K6Cu2[B4P80 28(OH)6] O ligom eric Tetrahedral A nions in Borophosphates: Six-M em bered Rings with Open and Cyclic Phosphate B ranchings in the Crystal Structure o f K6C u2[B4P80 28( 0 H )6]  
 Abstract    Crystals of K6Cu2[B4Ph02h(OH)6] were grown under hydrothermal conditions at 160 °C. The crystal structure (monochnic, P 2,/c (Nr. 14), a = 961.8(1), b = 1755.0(1), c = 942.0(1) pm, /3 = 112.29(1)°, Z = 2) contains oligomeric tetrahedral anions based on six-membered rings {B4P2 0 |()0 8/2} with additional branchings by hydrogenphosphate-groups (open branching: 4 x H P030 , /2; cyclic branching: 2 x HP0 20 2/ 2). The complex borophosphate anion is represented by the formula [B4P8O28(OH)6]l0_. Cu2+ is in a tetragonal pyramidal and K+ in an irregular coordination by eight and nine oxygen ligands, respectively. 
  Reference    Z. Naturforsch. 53b, 1440—1444 (1998); eingegangen am 23. Juli 1998 
  Published    1998 
  Keywords    Boron, Phosphorus, Tetrahedral Anions 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1440.pdf 
 Identifier    ZNB-1998-53b-1440 
 Volume    53 
3Author    Lothar Weber, Eckhard Dobbert, Andreas Rausch, Hans-Georg Stammler, Beate NeumannRequires cookie*
 Title    Synthesis, Structure and Reactivity of 2-Amino-and 2-Imino-2,3-dihydro-1H -1,3,2-diazaboroles  
 Abstract    The 2-halo-2,3-dihydro-1H-1,3,2-diazaboroles RN-CH=CH-N(R)BX (la': R = rBu, X = Br; lb: R = 2,6-Me2C6H.v, X = I) were converted into the 2-amino-2,3-dihydro-\H -1,3,2-diazaboroles RN-CH=CH-N(R)B-NH2 (2a: R = /Bu; 2b: 2,6-Me2C6H3) by treatment with dry gaseous ammonia. Similarly reaction of la' with 2,6-dimethylaniline or /BuNHt afforded the corresponding derivates /BuN-CH=CH-N(rBu)BNHR' (3; R 1 = 2,6-Me2C6H3; 4; R1 = rBu). The treatment of la' with the ethylene diamine adduct of lithium acetylide led to the formation of [rBuN-CH=CH-N(/Bu)BN(H)CH2]2 (5). Lithiation of 2 a and subsequent silylation gave 6 (R1 = SiMe3), which was transformed to the diborolylamine [/BuN-CH=CH-N(rBu)B]2NH (7) upon exposure to la'. Borolylketimine /BuN-CH=CH-N(/Bu)B-N=CPh2 (8) and borolylcar-bodiimide fBuN-CH=CHN(/Bu)B-N=C=N-SiMe3 (9) resulted from la' and Ph2C=NSiMe3 or Me3SiN=C=NSiMe3, respectively. All the new compounds were characterized by elemental analyses as well as spectroscopic data (IR, 'H, n B, i3C NMR, MS). Heterocycle 5 was also subjected to an X-ray diffraction analysis. 
  Reference    Z. Naturforsch. 54b, 363—371 (1999); eingegangen am 25. September 1998 
  Published    1999 
  Keywords    Boron, Diazaboroles, Amines, Imines 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0363.pdf 
 Identifier    ZNB-1999-54b-0363 
 Volume    54 
4Author    Rhenium, BoronR. Obert, D. Antona, E.Berhard Schweda, Joachim SträhleRequires cookie*
 Title    Synthese und Kristallstruktur von Re(NBCl3)Cl2[P(CH3)2C6H5]3, ein Komplex mit einer Nitridobrücke zwischen Rhenium und Bor Synthesis and Crystal Structure of Re(N BCl3)Cl2[P(CH3)2C6H 5]3, a Complex with a N itrido Bridge between  
 Abstract    R eN C l2(P M e2Ph)3 reacts as a Lewis base and with BC13 forms a nitrido bridge betw een Re and B. The resulting com plex R e(N B C l3)Cl2(PM e2Ph)3 crystallizes orthorhom bic in the space group Pn2! a with Z = 4. In the com plex each Re atom has six nearest neighbours in an almost octahedral arrangement with the NBC13 group being trans to one o f the Cl ligands. The difference betw een the two Re —Cl bond lengths (239,4 and 243,9 pm) indicates a weak trans effect o f NBC13. The linear bridge R e = N — B has bonding distances o f R e —N = 172,8 and N -B = 153 pm. B onding o f BC13 by the nitrido ligand causes a small 
  Reference    Z. Naturforsch. 39b, 733 (1984); eingegangen am 15. Februar 1983 
  Published    1984 
  Keywords    Nitrido Bridge, Synthesis, Crystal Structure, Rhenium, Boron 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0733.pdf 
 Identifier    ZNB-1984-39b-0733 
 Volume    39 
5Author    M. K. Das, S. C. HakrabortyRequires cookie*
 Title    Boron Spirochelates Derived from Some Hydroxamic Acids and Carboxylic Acids  
 Abstract    A number o f boron spirochelates o f the general formula B [R 'C 0 N (R)0 ]Y have been syn­ thesized by the single-pot reaction o f boric acid, a hydroxamic acid R'C O N (R)O H and a car­ boxylic acid H 2Y . The spirochelates have been characterized by elemental analyses, by IR, N M R ('H and nB) and UV spectra and conductance measurements. They are non-electro-lytes. 
  Reference    Z. Naturforsch. 45b, 1123—1127 (1990); received January 23 1990 
  Published    1990 
  Keywords    Boron, Hydroxam ic A cids, Carboxylic Acids, Spirochelates 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-1123.pdf 
 Identifier    ZNB-1990-45b-1123 
 Volume    45 
6Author    Bernd Wrackmeyer, Jürgen WeidingerRequires cookie*
 Title    N-Boryl-Substituted Bis(amino)stannylenes and -plumbylenes  
 Abstract    Two equivalents of N-lithio-N-trimethylsilyl-amino-9-borabicyclo[3.3.1]nonane (1) react with tin and lead dichloride by salt elimination to give the corresponding bis(amino)stannylene 2 and -plumbylene 3, respectively. The compounds 2 and 3 are monomers in solution and were characterized by 'H , i3C, 14N, 29Si, ll9Sn and 207Pb NMR spectroscopy. 
  Reference    Z. Naturforsch. 52b, 947—950 (1997); received May 22 1997 
  Published    1997 
  Keywords    Boron, Tin, Lead, Metal Amides, NMR Spectra 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-0947.pdf 
 Identifier    ZNB-1997-52b-0947 
 Volume    52 
7Author    R. Üdiger, K. NiepRequires cookie*
 Abstract    b[B2P20 8(0 H)] und Cs[B2P 2 0 8(0H)J: D ie ersten Borophosphate mit dreidimensional vernetzter Anionenteilstruktur R b[B 2P2O s(O H)] and C s[B 2P20 8(0 H)]: The First B oro p h o sp h ates with a T hree-dim ensional A nionic T etrahedral S tructure C ornelia Häuf, The isotypic borophosphates Rb[B2P20 8(0 H)] and Cs[B2P20 8(0 H)] were grown under hy­ drothermal conditions. The crystal structures were solved by single crystal methods (R b[B 2P20 8(0 H)]/C s[B 2 P20 8(0 H)]: monoclinic, 
  Reference    Z. Naturforsch. 52b, 1432—1435 (1997); eingegangen am 28. Juli 1997 
  Published    1997 
  Keywords    Boron, Crystal Structure, Framework, Channel, Phosphorus 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-1432_n.pdf 
 Identifier    ZNB-1997-52b-1432_n 
 Volume    52 
8Author    Z. NaturforschRequires cookie*
 Title    R eaction o f 9-B orabicyclo[3.3.1]nonane with N-Trim ethylsilylam ines -C leavage o f the N-Si or N -H Bond  
 Abstract    The reaction of dimeric 9-borabicyclo[3.3.1]no-nane 1 with N-trimethylsilyl-aniline 2 affords 9-anilino-9-borabicyclo[3.3.1]nonane 5 by elimina­ tion of trimethylsilane. In contrast, 1 reacts with the N-trimethylsilyl-2-aminopyridines 3 and 4 se­ lectively by elimination of H 2 to give the corre­ sponding N-trimethylsilyl-aminoboranes 6 and 7. The latter reactions proceed via formation of bo-rane-pyridine adducts. 
  Reference    Z. Naturforsch. 53b, 393—395 (1998); received December 29 1997 
  Published    1998 
  Keywords    Aminoborane, Aminosilane, Boron, Pyridine, NMR Data 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-0393_n.pdf 
 Identifier    ZNB-1998-53b-0393_n 
 Volume    53 
9Author    Insan Boya, Rüdiger KniepaRequires cookie*
 Title    K[B6PO10(OH)4]: Ein Borophosphat mit gestreckten Bändern aus Tetraeder-Vierer-Ringen und offen-zyklischen Verzweigungen über planare B203(0 H)2-Gruppen K[B6PO 10(OH)4]: A Borophosphate Containing Rods of Tetrahedral Vierer-Rings with Additional Open-Loop Branchings via Planar B20 3(0 H )2 Groups  
 Abstract    K[B6PO|0(OH)4] was prepared under mild hydrothermal conditions (T = 170 °C) from a concentrated solution of K2B40 7 ■ 4H20 , KH2P 04, and HC1 (18%). The crystal structure of the tetragonal compound was solved by X-ray single crystal methods (space group P 4/ncc, No 130): a = 1209.66(13), c = 759.05(7) pm; Z = 4. The anionic partial structure consists of infinite rods of ^ [B6POl0(OH)4]~ which are built of vierer-rings of alternating B 0 4 and P04 tetrahedra with additional open-loop branchings via planar B20 3(0 H)2 groups at the B 0 4 units by sharing common oxygen functions. Potassium (K+) is located within structural channels running along [001]; the eightfold coordination by oxygen (OH-groups) results in a (slightly) distorted tetragonal antiprism. 
  Reference    Z. Naturforsch. 54b, 895—898 (1999); eingegangen am 9. April 1999 
  Published    1999 
  Keywords    Boron, Phosphorus, Tetrahedral Rods, Planar Borate Groups 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0895.pdf 
 Identifier    ZNB-1999-54b-0895 
 Volume    54