scholarly journals Crystal Structures of Two Macrocyclic Bischalcones Possessing 26-Membered Rings

2015 ◽  
Vol 2015 ◽  
pp. 1-5
Author(s):  
Rina Mondal ◽  
Nayim Sepay ◽  
Debajyoti Ghoshal ◽  
Asok K. Mallik
Keyword(s):  
Hydrogen Bonding ◽  
Single Crystal ◽  
Crystal Structures ◽  
Membered Ring ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray ◽  
Hydrogen Bonding Interactions

Single crystal X-ray diffraction of two macrocyclic bischalcones, namely, (2E,25E)-11,17,33,37-tetraoxapentacyclo[36.4.0.05,10.018,23.027,32]dotetraconta-1(42),2,5,7,9,18,20,22,25,27,29,31,38,40-tetradecaene-4,24-dione(1) and (2E,24E)-11,16,32,37-tetraoxapentacyclo[36.4.0.05,10.017,22.026,31]dotetraconta-1(42),2,5,7,9,17,19,21,24,26,28,30,38,40-tetradecaene-4,23-dione(2), each containing a 26-membered ring, has been studied. Compound 1 belongs to the monoclinic system, space group C2/c with a = 34.3615(9) Å, b = 12.7995(3) Å, c = 14.6231(3) Å, β = 96.912(2)°,  V = 6,384.6(3) Å3, and Z = 8. Compound 2 is triclinic, space group P-1 with a = 10.066(2) Å, b = 10.670(3) Å, c = 16.590(3) Å, α = 85.95(2), β = 89.244(14), γ = 62.211(13), V = 1572.0(6) Å3, and Z = 2. Intermolecular C–H⋯O hydrogen bonding interactions are present in both compounds.

Syntheses and crystal structures of two new sodium borates [Na2(H2O)3][B5O8(OH)2] and Na[enH2][B7O10(OH)4]

2016 ◽  
Vol 71 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Yan-Jing Wang ◽  
Ai-Quan Jia ◽  
Xing-Shun Chen ◽  
Hua-Tian Shi ◽  
Qian-Feng Zhang
Keyword(s):  
Single Crystal ◽  
Crystal Structures ◽  
Building Blocks ◽  
X Ray Diffraction ◽  
Monoclinic System ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray

AbstractTwo new sodium borates [Na2(H2O)3][B5O8(OH)2] (1) and Na[enH2][B7O10(OH)4] (2) have been synthesized and their structures have been determined by single-crystal X-ray diffraction. Compound 1 crystallizes in the monoclinic system space group C2/c with a = 11.118(2), b = 16.442(2), c = 13.572(2) Å, β =112.90(1)°, V = 2285.4(5) Å3, and Z = 4. Compound 2 crystallizes in the triclinic space group P1̅, with a = 7.4974(9), b = 8.349(2), c = 11.746(2), α = 93.98(1), β = 97.25(1), γ = 101.18(1)°, V = 712.2(2) Å3, and Z = 2. Compound 1 possesses {Na2B5O8(OH)2·3H2O}n chains which form through the connection of the fundamental building blocks (FBBs) [B5O8(OH)2]2– by sharing Na+ ions, while compound 2 has infinite {Na[B7O10(OH)4]}n sheets which form via the connection of the FBBs [B7O10(OH)4]3– by common Na+ ions.

A Chain-like Polyoxotungstate Constructed from [CeW10O36]9–, [Na5(H2O)17Cl]4+, and [Na2(H2O)8]2+ Units: (NH4)3[Na5(H2O)17Cl]{[Na(H2O)4]2[CeW10O36]}· 6 H2O

2007 ◽  
Vol 62 (12) ◽  
pp. 1471-1475 ◽  
Author(s):  
Ling Yuan ◽  
Chao Qin ◽  
Xinlong Wang ◽  
Enbo Wang
Keyword(s):  
Hydrogen Bonding ◽  
Single Crystal ◽  
Supramolecular Network ◽  
X Ray Diffraction ◽  
Orthorhombic Space Group ◽  
Space Group ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Linear Chains ◽  
A Chain

An unusual cerium-containing decaoxotungstate complex, (NH4)3[Na5(H2O)17Cl]{[Na(H2O)4]2- [CeW10O36]} · 6H2O (1) has been synthesized and characterized by IR, TG, and single crystal X-ray diffraction studies (yellow crystals, orthorhombic, space group Imm2, a = 11.473(2), b = 15.225(3), c = 17.646(7) Å, V = 3082.3(15) °A3, Z = 2, R = 0.046). In this compound, sandwichtype [CeW10O36]9− clusters are linked by binuclear [Na2(H2O)8]2+ units by sharing oxygen atoms into linear chains, which are further extended into a 2D supramolecular network via pentanuclear [Na5(H2O)17Cl]4+ units by strong hydrogen bonding interactions.

Synthesis and structure of M 0.5Bi3P2O10 (M = Ca, Sr, Ba, Pb) series

2003 ◽  
Vol 59 (5) ◽  
pp. 606-610 ◽  
Author(s):  
Digamber G. Porob ◽  
T. N. Guru Row
Keyword(s):  
Single Crystal ◽  
Crystal Structures ◽  
Diffraction Data ◽  
Ternary Systems ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Ceramic Method ◽  
Space Group ◽  
X Ray

A series of M 0.5Bi3P2O10 compounds with M = Ca, Sr, Ba and Pb have been synthesized in MO–Bi2O3–P2O5 ternary systems by the ceramic method and the crystal structures were then solved using single-crystal X-ray diffraction data. These compounds are isostructural with Bi6.67P4O20 (triclinic, space group P\bar 1, Z = 2). The structures consist of infinite chains of Bi2O2 units along the c axis formed by linking BiO8 and BiO6 polyhedra. These chains are interconnected by MO8 polyhedra forming two-dimensional layers in the ac plane. The phosphate tetrahedra are sandwiched between these layers.

Structural studies in the iron(III)/chloride/α,α'-diimine system. I. The six-coordinate mononuclear fac-[FeCl3(phen)X] system, X = MeOH, H2O, Cl-

1983 ◽  
Vol 36 (10) ◽  
pp. 2031 ◽  
Author(s):  
PC Healy ◽  
JM Patrick ◽  
BW Skelton ◽  
AH White
Keyword(s):  
Single Crystal ◽  
Least Squares ◽  
Crystal Structures ◽  
Iron Complexes ◽  
Structural Studies ◽  
X Ray Diffraction ◽  
Chlorine Atoms ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray

The crystal structures of three iron complexes [FeCI3(phen)(MeOH)].MeOH (I), [FeCl3(phen)(H2O)] (2) and [phenH]+ [FeCl4(phen)]- (3) have been determined by single-crystal X-ray diffraction methods at 295(1) K, and refined by least squares to residuals of 0.044 (1600 'observed' reflections), 0.040 (806) and 0.050 (2496), respectively. Crystals of (1) are monoclinic, P21/c, a 8.005(9), b 14.805(11), c 14.830(12) A, P 101.03(7)°, Z 4; for (2), triclinic, space group P1 , a 10.591(8), b 10.227(7), c 6.613(3) Ǻ, α 108.21(5), β 100.69(5), γ 91.98(6)°2, 2 ; for (3), triclinic, P1, a 18.560(8), b 10.302(5), c 6.981(3) Ǻ, α 106.79(4), β 94.50(4), γ 103.15(4)°, Z 2. In all structures, the iron atoms are six-coordinate, with the disposition of the three chlorine atoms being fac in (1) and (2).

Confacial bioctahedral complexes of tungsten(IV) containing tungsten-to-tungsten bonds: X-ray crystal structures of di-μ-ethanethiolato-μ-sulfidobis[dichloro(dimethyl sulfide)-tungsten(IV) (W—W)] and tetraphenylphosphonium di-μ-ethane thiolato-μ-sulfido- bis[trichlorotungstate(IV) (W—W)]

1982 ◽  
Vol 60 (11) ◽  
pp. 1333-1338 ◽  
Author(s):  
P. Michael Boorman ◽  
Penelope W. Codding ◽  
K. Ann Kerr ◽  
Kelly J. Moynihan ◽  
Vikram D. Patel
Keyword(s):  
Single Crystal ◽  
Bond Length ◽  
Diffraction Study ◽  
Crystal Structures ◽  
Dimethyl Sulfide ◽  
Heavy Atom ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
Space Group ◽  
X Ray

The complex (Me2S)Cl2W(μ-S)(μ-SEt)2WCl2(Me2S), 1, has been prepared by reaction of [WCl4(Me2S)2] with 1 mol-equiv. of SiMe3(SEt) in CH2Cl2 solution. A single-crystal X-ray diffraction study shows that the molecule has a confacial bioctahedral structure with a W—W bond length of 2.526(2) Å. The structure was solved by heavy atom methods and refined to R = 0.061 and Rw = 0.061 for 2715 reflections with I ≥ 3σ(1). Crystals of 1 are triclinic, space group [Formula: see text], with a = 9.661(1), b = 10.695(1), c = 13.253(4) Å, α = 61.84(2), β = 66.98(2), and γ = 66.44(1)°, Z = 2.Reaction of 1with 2 mol-equiv. of Ph4PCl in CH2Cl2 solution yields (Ph4P)2[Cl3W(μ-S)(μ-SEt)2WCl3], 2. Crystals of 2 are triclinic, space group [Formula: see text], with a = 10.153(1), b = 13.043(1), c = 21.876(3) Å, α = 95.16(1), β = 96.48(2), and γ = 108.90(1)°, Z = 2. The structure was refined to R = 0.041, Rw = 0.048 for 2384 reflections with I ≥ 3σ(1); 2 also has a confacial bioctahedral structure with a W—W bond length of 2.522(1) Å.

Kristallstrukturen, Schwingungsspektren und Normalkoordinatenanalyse von cis-[ReCl4X2]2-, X = NCS, NCSe / Crystal Structures, Vibrational Spectra and Normal Coordinate Analysis of cis-[ReCl4X2]2-, X = NCS, NCSe

1998 ◽  
Vol 53 (11) ◽  
pp. 1329-1334 ◽  
Author(s):  
L. Homolya ◽  
S. Strueß ◽  
W. Preetz
Keyword(s):  
Crystal Structures ◽  
Normal Coordinate Analysis ◽  
X Ray Diffraction ◽  
Normal Coordinate ◽  
Triclinic Space Group ◽  
Valence Force ◽  
Space Group ◽  
X Ray ◽  
Valence Force Field ◽  
Ir And Raman

The crystal structures of cis-(n-Bu4N)2[ReCl4(NCS)2] (triclinic, space group P1̅, a = 11,245( 1), b = 20.174(3), c = 21.320(8) Å, a =109.06(2), β = 96.46(2), γ = 98.22(5)°, Z = 4) and cis-(Ph4P)2[ReCl4(NCSe)2]·2CH2Cl2 (triclinic, space group P1̅, a = 10.341(2), b = 13.436(3), c = 19.616(4) Å, α = 92.70(2), β = 92.02(2), γ = 89.99( 1)°, Z= 2) have been determined by single crystal X-ray diffraction analysis. Both ambidentate ligands NCS and NCSe are bonded via the N atom. Using the molecular parameters of the X-ray determinations the low temperature (10 K) IR and Raman spectra of the (n-Bu4N) salts have been assigned by normal coordinate analysis based on a modified valence force field. The valence force constants fd(ReN) are 1,78(NCS) and 1,79(NCSe) mdyn/ Å.

Study on Novel Structure of Praseodymium Complex, C5H13O11Pr

2013 ◽  
Vol 834-836 ◽  
pp. 515-518
Author(s):  
Hai Xing Liu ◽  
Qing Liu ◽  
Ting Ting Huang ◽  
Yang Xu ◽  
Lin Tong Wang ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Single Crystal ◽  
Hydrothermal Reaction ◽  
Crystal Packing ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Novel Structure ◽  
Praseodymium Complex

A novel praseodymium complex C5H13O11Pr has been synthesized from hydrothermal reaction and the crystal structure has been determined by means of single-crystal X-ray diffraction. The Pr1 atom is nine coordinated by nine O atoms. The crystal packing is stabilized by O-H...O hydrogen bonding interactions.

Synthesis of Glycolic and Oxalic Acid Europium: [Eu (C3 H6O9)] ·2(H2O)

2012 ◽  
Vol 554-556 ◽  
pp. 792-795
Author(s):  
Hai Xing Liu ◽  
Jing Wang ◽  
Fang Fang Jian ◽  
Hui Juan Yue ◽  
Guang Zeng ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Oxalic Acid ◽  
Single Crystal ◽  
Hydrothermal Reaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
The Eu

A new Eu complex [Eu (C3O9H6)] ·2(H2O) has been synthesized from a hydrothermal reaction and the crystal structure has been determined by means of single-crystal X-ray diffraction. The Eu atom is coordinated by eight O atoms. The molecular is antisymmetric structure by the C3-C3 axis. It is striking that the structure of the complex exhibits extensive O-H…O hydrogen-bonding interactions.

scholarly journals Darstellung und Kristallstrukturen von (PH4P)4Sb8I28 und (Ph4P)Sb3I10(Ph = C6H5) / Synthesis and Crystal Structures of (PH4P)4Sb8I28 and (Ph4P)Sb3I10(Ph = C6H5)

1987 ◽  
Vol 42 (12) ◽  
pp. 1493-1499 ◽  
Author(s):  
Siegfried Pohl ◽  
Wolfgang Saak ◽  
Detlev Haase
Keyword(s):  
Single Crystal ◽  
Crystal Structures ◽  
Diffraction Data ◽  
Lone Pair ◽  
X Ray Diffraction ◽  
Triclinic Space Group ◽  
X Ray ◽  
Molar Ratios ◽  
Polymeric Chains ◽  
Bond Strengths

AbstractThe compounds (Pn4P)4Sb8I28 (1) and (Ph4P)Sb3I10 (2) were prepared by the reaction of SbI3 and Ph4PI in acetonitrile (molar ratios 2:1 and 3:1 respectively). The structures of 1 and 2 were determined from single crystal X-ray diffraction data.1 crystallizes in the triclinic space group P1̄ with a - 1321.7(5). b = 1346.7(5), c = 2201.8(8) pm, α = 104.18(2). β = 99.92(2), γ = 100.33(2)°; 2: monoclinic, C2/c, a = 2371.1(2), b = 745.0(1), c = 2495.1(2) pm, β = 100.75(1)°.Whereas 1 exhibits isolated Sb8I284- ions, the anions of 2 are built up of polymeric chains [Sb3I10- ]∞. In both compounds the distorted Sbl6 octahedra are linked by common edges. The Sb-I distances are in the range between 277.4 and 354.8 pm (1) and between 277.4 and 342.4 pm (2). The observed structures do not only depend on stoichiometry, the nature of the counter cations, and the possibility of oligomerisation but also on the wide variety of the Sb-I bond strengths and the different bridges formed by iodine.The lone pair of Sb(III) seems to be predominantly 5 s2.

Study on a Novel Structure of Yttrium Complex, C4H10O10Y

2013 ◽  
Vol 785-786 ◽  
pp. 424-427
Author(s):  
Hai Xing Liu ◽  
Qing Hua Zhang ◽  
Zhang Xue Yu ◽  
Quan Hua Fan ◽  
Ting Ting Huang ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Crystal Structure ◽  
Hydrogen Bonding ◽  
Single Crystal ◽  
Hydrothermal Reaction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Hydrogen Bonding Interactions ◽  
Novel Structure

The Y complex C4H10O10Y has been synthesized from a hydrothermal reaction and the crystal structure has been determined by means of single-crystal X-ray diffraction. The Y atom is coordinated by nine O atoms. The molecular structure stabilized by the O-H…O hydrogen-bonding interactions.

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