共查询到20条相似文献,搜索用时 31 毫秒
1.
T. R. Sertbakan S. Sağlam A. Özbay S. Özçelik 《Journal of inclusion phenomena and macrocyclic chemistry》2004,49(3-4):235-240
New Hofmann-diaminododecane-type clathrates of the form M(1,12-diaminododecane) Ni(CN)4?G (M = Co, Ni or Cd; G = toluene, m-xylene, o-xylene or p-xylene) have been prepared in powder form and their infared spectra are reported. The spectral data suggest that the host–guest frame-works of these compounds are similar in structure to other Hofmann-diam-type clathrates. 相似文献
2.
Şenay Yurdakul M. Tahir Güliüoğlu 《Journal of inclusion phenomena and macrocyclic chemistry》2001,40(3):231-237
Infrared spectra of M(piperidine)2Ni(CN)4.0.5G (M=Co, Ni or Cu;G= chlorobenzene, 1,2-dichlorobenzene or 1,3-dichlorobenzene; M=Co or Ni;G=1,4-dichlorobenzene) compounds are reported. The piperidine molecules inthe host permit the inclusion of bulky guest molecules. The spectral featuressuggest that the compounds are similar in structure to the Hofmann-type clathrates. 相似文献
3.
M.Tahir Güllüo?lu?enay Yurdakul 《Journal of Molecular Structure》2002,641(1):93-100
New Hofmann-type complexes and clathrates of the forms M(piperidine)2Ni(CN)4 and M(piperidine)2Ni(CN)4·1.5G (M=Cd, Co, Ni or Cu; G=benzene) were prepared in powder form and their infrared and Raman spectra are reported. The spectral features suggest that these compounds are similar in structure to the Hofmann-type clathrates except for the copper compounds. The complex and clathrate of Cu have different spectral features in comparison with its analogues due to the Jahn-Teller effect. 相似文献
4.
Ümran Uygun Nuri Öztürk Çağri Çirak Deniz Türköz Semiha Bahçeli 《Journal of inclusion phenomena and macrocyclic chemistry》2006,54(3-4):187-192
New Hofmann-ethanedithiol-type clathrates, M(1,2-Ethanedithiol)Ni(CN)4·Benzene (M=Cd,Co), have been obtained in the powdered form. By vibrational spectroscopy of these two new compounds, it is exhibited that their structures are similar to those of the other Hofmann-type clathrates. 相似文献
5.
ERGÜN KASAP SÜLEYMAN ÜZCELÍK 《Journal of inclusion phenomena and macrocyclic chemistry》1997,28(3):259-267
IR spectra of M(1,4-diaminobutane)Ni(CN)4° 1.5C6H6 (M = Mn, Fe, or Co), and IR and Raman spectra of M(1,4-diaminobutane)Ni(CN)4° 1.5C6H6 (M = Ni or Cd) clathrates are reported. The spectral features suggest that the compounds are similar in structure to the Hofmann-dabn-type clathrates. 相似文献
6.
Mustafa Şenyel T. Raci Sertbakan Güneş Kürkçüoğ Ergün Kasap Ziya Kantarci 《Journal of inclusion phenomena and macrocyclic chemistry》2001,39(1-2):175-180
Three Hofmann-diaminododecane-type clathrates of the form M(1,12-diaminododecane) Ni(CN)4G (M = Co, Ni or Cd; G = benzene, naphthalene, anthracene, phenanthrene or biphenyl) have been prepared in powder form. The 1,12-diaminododecane molecules in the host lattice permit the inclusion of bulky guest molecules. The spectral features suggest that these compounds are similar in structure to the other Hofmann-diam-type clathrates. 相似文献
7.
Yang KH Liu YC Yu CC Chen BC 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2011,82(1):383-388
New Hofmann type clathrates in the form of M(pp)2Ni(CN)4·2G (where pp = 1-phenylpiperazine, G = 1,4-dioxane and M = Ni, Co or Cd) have been prepared in powder form and their FT-IR and FT-Raman spectra are reported. The results suggest that the present compounds are similar in structure to the Hofmann type clathrates and their structures consist of conjugated polymeric layers of |M–Ni(CN)4|∞ with the pp bound to the metal (M) atom. 相似文献
8.
IR spectra of Mn(en)M(CN)4·2C6H6 (M=Cd or Hg), and IR and Raman spectra of Cd(en)M(CN)4·2C6H6 (M=Cd or Hg) clathrates are reported. The spectral features suggest that the first two compounds are similar in structure to the later two Td-type clathrates. 相似文献
9.
Yüksel Tufan Nurcan Karacan Ümmühan Özdemr 《Journal of inclusion phenomena and macrocyclic chemistry》2001,40(4):275-278
Four new Hofmann-type clathrates of the form M(bpa)2Ni(CN)4· 2m-xylene (M = Mn , Fe , Co and Ni; bpa = 1,2-bis(4-pyridyl)ethane) have been synthesized and characterized by vibrational spectroscopy. The M(bpa)2Ni(CN)4 (M = Fe and Co) host structure is similar to the classical Hofmann-type host framework composed of layers of a two dimensional catena-metal tetra--cyanonickelate(II) network, but in M(bpa)2Ni(CN)4 (M = Mn and Ni), the Ni(CN)4 moiety behaves as a bidentate –[NC-Ni(CN)2-CN–]– unit in the host framework. 相似文献
10.
Sevim Akyüz Andrew B. Dempster J.Eric D. Davies Kerry T. Holmes 《Journal of Molecular Structure》1977
The time-dependent changes which are observed in the infrared and Raman spectra of samples of the two Hofmann aniline clathrates M(NH3)2Ni(CN)4.an2 {M = Cd(II), Ni(II), an = C6H5NH2} indicate the occurrence of a solid state ligand replacement reaction in which the aniline guest molecule replaces the coordinated ammonia to give Man2Ni(CN)4 as the final product. The rate of replacement is greater for the cadmium than for the nickel clathrate, and for both clathrates evacuation of the sample greatly increases the rate of replacement. The Man2Ni(CN)4 complexes can themselves act as host lattices forming clathrates containing guest molecules such as aniline. 相似文献
11.
Arzu Sungur Sevim Akyüz J. Eric D. Davies 《Journal of inclusion phenomena and macrocyclic chemistry》1987,5(4):491-497
The infrared spectra of M(4,4-bipyridyl)Ni(CN)4 complexes (M=Ni or Cd) and their dioxane, benzene, toluene, aniline andN,N-dimethylaniline clathrates are reported. Additional information regarding the structure of the host lattice is obtained from the Raman spectra of the M=Cd complex. It is shown that the structure of the host lattice consists of infinite polymeric layers of {M-Ni(CN)4} analogous to those of Hofmann type clathrates that have tetragonal symmetry. Bidentate 4,4-bipyridyl molecules form bridges between the metal atoms {M} in the adjacent {M-Ni(CN)4} layers. It is found that the 4,4-bipyridyl molecules are centrosymmetric in this structure.Presented at the Fourth International Symposium on Inclusion Phenomena and the Third International Symposium on Cyclodextrins, Lancaster, U.K., 20–25 July 1986 相似文献
12.
Güneş Süheyla Kürkçüoğlu 《Journal of inclusion phenomena and macrocyclic chemistry》2010,67(1-2):191-200
Two new cadmium dimethylpyrazine (2,3-dimethylpyrazine or 2,5-dimethylpyrazine) tetracyanonickelate benzene clathrates, [Cd(C6H8N2)Ni(CN)4]·C6H6, have been prepared in powder form and characterized by FT-IR spectroscopy, Raman spectroscopy, X-ray diffraction, thermal analyses and elemental analyses. Vibrational assignments are proposed for the bands of the host lattice and guest molecule. It is shown that the spectra are consistent with a proposed crystal structure for these compounds derived from X-ray diffraction measurements. The C, H, N, Cd and Ni analyses were carried out for all the compounds. Thermal behaviors of these compounds are followed using TG and DTA techniques. The FT-IR, Raman spectroscopic, XRD, thermal and elemental analyses results propose that these compounds are similar in structure to the Hofmann-type clathrates. Their structure consists of planar polymeric layers, {M–Ni(CN)4}∞, formed from Ni(CN)4 anions coordinated to the bridging 2,3- or 2,5-dimethylpyrazine molecules bound directly to the cadmium. The cadmium atoms are bound to four N atoms of the CN ions and, the Ni atoms are surrounded by four C atoms of the CN groups in a square-planar layer. 相似文献
13.
A. Özbay S. Sağlam T.R. Sertbakan E. Kasap S. Özçelik 《Journal of inclusion phenomena and macrocyclic chemistry》2007,58(1-2):49-54
Infrared spectra of M(1,10-diaminodecane)Ni(CN)4 · 1,5 G (M=Co, Ni or Cd; G=o-xylene, m-xylene, p-xylene) and Cd(l,6-diaminohexane)M(CN)4 · C6H6 (M=Cd or Hg) clathrates are reported. The 1,10-diaminodecane and 1,6-diaminohexane molecules in the host permit the inclusion
of bulky guest molecules. The spectral data of clathrates were compared with those of the corresponding host. The spectral
features suggest that these compounds are similar in structure to other Hofmann-type and Hofmann-Td type clathrates, respectively. 相似文献
14.
Sevim Akyüz 《Journal of inclusion phenomena and macrocyclic chemistry》1985,3(4):403-407
The results of an infrared and Raman spectroscopic study are reported for two new metal 2-methylpyridine tetracyanonickelate complexes, M(C6H7N)2Ni(CN)4, M=Ni or Cd. Their structure consists of corrugated polymeric layers of {M-Ni(CN)4} with 2-methylpyridine molecules bound directly to the metal (M). These complexes can act as host lattices in the formation of inclusion compounds with dioxane guest molecules. 相似文献
15.
Soldatov D. V. Logvinenko V. A. Dyadin Yu. A. Lipkowski J. Suwinska K. 《Journal of Structural Chemistry》1999,40(5):757-771
The title compounds form an iso structural series and are isomorphic with other [MPy4X2]-2Py clathrates (XRD, KM4 diffractometer, cell parameters and space group Ccca from 17–80 reflections). In the clathrate
[NiPy4(NCO)2]-2Py studied in detail (XRD, CAD-4 diffractom eter, λCuKα, Ω/2θ scan mode, θmax = 78‡, 990 strong reflections, 104 parameters, R = 0.053), the host molecule has 222 symmetry, and the twofold axes run along
the coordination bonds. The transoctahedral environment of nickel consists of six nitrogen atoms of four pyridine and two
isocyanate ligands. The coordination polyhedron is slightly distorted due to changes in the bond lengths. The molecule has
a propeller conformation. The guest molecules lie in the cavities of the crystal structure in conformity with the van der
Waals type of packing. The host complex [NiPy4(NCO)2] (XRD, CAD-4 diffractometer, 4615 strong reflections, 560 parameters, R-0.037) crystallizes in the triclinic crystal system
(space group P1) with two independent asymmetric molecules in the unit cell. The molecular structure is analogous to that
in the ciathrate phase, but the coordination angles are severely distorted; one of the molecules acquires a distorted propeller
conformation, and the other, a centrosvmmetric conformation, which is less favorable. While being structurally identical,
the [MPy4(NCO)2]-2Py clathrates differ heavily in the properties. The first four complexes dissociate to host complexes, and their thermal
stability changes in the sequence Mn< Fe< Co< Ni; the Cu and Zn clathrates decompose in one step to dipyridine complexes with
decomposition of host complexes. Decomposition of the Cd ciathrate follows one of these patterns depending on conditions.
The results are compared with those for other known systems. Synthetic procedures are given.
Translated fromZhurnal Strukturnoi Khimii, Vol. 40, No. 5, pp. 935–953, September–October, 1999. 相似文献
16.
IntroductionSince 184 8,whenPlayfairpublishedthefirstpaperrelatedtonitroprussides ,1thetransitionmetalpenta cyanonitrosylmetallatehydrateshavebeenwidelystudiedbecauseoftheirimportantrolesinmolecularsieves ,cationexchangers,electronscavengersandradionuclidesor bents .2 4 Thenitroprussides ,regardlessofthecationicmetal,arecurrentlyemployedasreversibleinhibitorsofagroupofenzymesknownassuperoxidedismutases .5Recently ,using [Fe(CN ) 5(NO) ]2 - asabuildingblock ,somenitroprusside bridgedpolymeri… 相似文献
17.
Ergün Kasap Ziya Kantarci 《Journal of inclusion phenomena and macrocyclic chemistry》1994,20(1):33-41
IR spectra of Mn(NH3)2M(CN)4·2C6H6 (M=Cd or Hg), and IR and Raman spectra of Cd(NH3)2M(CN)4·2C6H6 (M=Cd or Hg) are reported. The spectral data suggest that the former two compounds are similar in structure to the latter two Td-type clathrates. 相似文献
18.
D.V. Soldatov J. Lipkowski 《Journal of inclusion phenomena and macrocyclic chemistry》1998,30(2):99-109
[MPy4(N3)2]2Py (M = Ni, Co) are clathrates where two of six pyridine species are included in the crystal structure of the host complex without chemical bonding. The clathrates are isostructural, orthorhombic, space group Pnna (52), Z = 4. For the Ni compound a = 14.958(5), b = 11.909(5), c = 17.517(7) Ú, V = 3120(2) Ú3, µ = 12.25 cm-1, final R = 0.057.The Cocompound is of very similar structure (a = 14.980(3), b =11.980(2), c = 17.350(5) Ú, V = 3114(1) Ú3, µ = 46.50 cm-1. The metal cation in the host molecule is surrounded by six donor nitrogens of two terminal azido-groups in trans-positions and four pyridine ligands. The complex molecule lies on a twofold axis parallel to a. 相似文献
19.
S. Sağlam T. R. Sertbakan A. Özbay S. Özçelik E. Kasap 《Journal of inclusion phenomena and macrocyclic chemistry》2010,66(3-4):243-249
M(1,12-diaminododecane)Ni(CN)4.G (M = Co, Ni or Cd; G = chlorobenzene; 1,2-; 1,3- or 1,4- dichlorobenzene) clathrates were prepared in powder form for the first time and their infrared spectra were reported and then compared with M(1,10-diaminodecane)Ni(CN)4.1,5G (M = Co, Ni or Cd; G = chlorobenzene; 1,2-; 1,3- or 1,4-dichlorobenzene) clathrates. The spectral results suggest that the characteristic ν(CN) and δ(NiCN) frequencies are found to be similar to those known for the Hofmann type compounds, in that prepared compounds are similar in structure to this type compounds and their structures consist of polymeric layers [M–Ni(CN)4]∞ with the 1,12-diaminododecane molecule bound to the metal atom (M). Also, the results suggest that the ligand molecule with 10 to 12 of chain length have no effect on vibrational bands of the guest molecules in the similar Hofmann-diam-type clathrates. The normal mode frequencies and corresponding vibrational assignments of chlorobenzene and 1,2-; 1,3- or 1,4-dichlorobenzene in the ground state were calculated by DFT/B3LYP level of theory using the 6-311G(d, p) basis set in Gauss-view. In addition, these theoretical results were compared to the experimental results for the vibrational modes of host molecules. 相似文献
20.
CELAL BAYRAK MEHMET ÇİVİ YASEMİN KUTUCU 《Journal of inclusion phenomena and macrocyclic chemistry》2006,55(3-4):303-307
Infrared spectra of Mn(NH3)2M(CN)4·2C6H5NH2 (M = Zn, Cd or Hg) are reported. The spectral data suggest that these compounds are similar in structure to Hofmann-Td-type clathrates. 相似文献