共查询到20条相似文献,搜索用时 31 毫秒
1.
Kanidtha Hansongnern Uraiwan Saeteaw Jack Cheng Fen‐Ling Liao Tian‐Huey Lu 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(8):895-896
The Ru—N bond distances in the title complex, [Ru(NO2)(C11H9N3)(C15H11N3)]BF4 or [Ru(NO2)(tpy)(azpy)]BF4, [tpy is 2,2′:6′,2′′‐terpyridine and azpy is 2‐(phenylazo)pyridine], are Ru—Npy 2.063 (4), Ru—Nazo 2.036 (4), Ru—Nnitro 2.066 (3) Å, and Ru—Ntpy 2.082 (4), 1.982 (3) and 2.074 (4) Å. The azo N atom is trans to the nitro group. The azo N=N bond length is 1.265 (5) Å, which is the shortest found in such complexes to date. This indicates a multiple bond between Ru and the N atom of the nitro group, and π‐backbonding [dπ(Ru) π*(azo)] is decreased. 相似文献
2.
Jaromír Marek Pavel Kopel Zdenk Trvní
ek 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(12):m558-m560
In the crystal structure of the title compound, [N,N′‐bis(3‐aminopropyl)ethylenediamine‐κ4N,N′,N′′,N′′′][1,3,5‐triazine‐2,4,6(1H,3H,5H)‐trithionato(2−)‐κ2N,S]zinc(II) ethanol solvate, [Zn(C8H22N4)2(C3HN3S3)]·C2H6O, the ZnII atom is octahedrally coordinated by four N atoms [Zn—N = 2.104 (2)–2.203 (2) Å] of a tetradentate N‐donor N,N′‐bis(3‐aminopropyl)ethylenediamine (bapen) ligand and by two S and N atoms [Zn—S = 2.5700 (7) Å and Zn—N = 2.313 (2) Å] of a trithiocyanurate(2−) (ttcH2−) dianion bonded as a bidentate ligand in a cis configuration. The crystal structure of the compound is stabilized by a network of hydrogen bonds. 相似文献
3.
Huub Kooijman Anthony L. Spek Gerard A. van Albada Patrick Gamez Jan Reedijk 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(2):m51-m54
In the crystal structure of [Cu(CF3SO3)(C2N3)(C8H7N5)2]·0.5C2H6O, the CuII atom adopts a distorted octahedral geometry, with the basal plane formed by two N atoms of one dipyrimidinylamine ligand, one N atom of the second pyrimidine ligand and a nitrile N atom of the dicyanamide anion [Cu—N = 1.972 (2)–2.021 (2) Å]. The apical positions are occupied by an N atom of the second ligand [Cu—N = 2.208 (2) Å], and an O atom of the trifluoromethanesulfonate anion [Cu—O = 2.747 (2) Å] at a semi‐coordination distance. Pairs of inversion‐related N—H⋯N hydrogen bonds of the so‐called Watson–Crick type, augmented by two C—H⋯N contacts, link adjacent complexes into an infinite one‐dimensional chain running in the [101] direction. 相似文献
4.
Jun Luo Xi‐Geng Zhou Lin‐Hong Weng Xiu‐Feng Hou 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(10):m392-m395
Two new complexes, [Cu(C2N3)2(dien)] (dien is diethylenetriamine, C4H13N3), (I), and [Cu(C2N3)(trien)](C2N3) (trien is triethylenetetramine, C6H18N4), (II), have been characterized by single‐crystal X‐ray diffraction. Both complexes display a distorted tetragonal–pyramidal geometry. In (I), the Cu atom is coordinated in the basal plane by three diethylenetriamine N atoms [Cu—N = 2.000 (2), 2.004 (2) and 2.025 (2) Å] and one terminal N atom [Cu—N = 1.974 (2) Å] from one monodentate dicyanamide group, and in the apical position by one terminal N atom [Cu—N = 2.280 (2) Å] from the other monodentate dicyanamide group. In (II), the Cu atom is surrounded by four triethylenetetramine N atoms [Cu—N = 2.012 (2), 2.014 (2), 2.019 (2) and 2.031 (2) Å in the basal plane] and a terminal N atom [Cu—N = 2.130 (2) Å in the apical site] from one monodentate dicyanamide group. The other dicyanamide anion is not directly coordinated to the metal atom. In both (I) and (II), hydrogen‐bond interactions between the uncoordinated terminal N atoms of two dicyanamide ions and the amine H atoms lead to the formation of three‐dimensional networks. 相似文献
5.
Huub Kooijman Anthony L. Spek Gerard A. van Albada Jan Reedijk 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(2):m124-m126
In the crystal structure of the title compound, [Cu(C2N3)2(C12H12N2)]n, the CuII atom adopts a distorted square‐pyramidal geometry, the basal plane of which is formed by two N atoms of the bipyridine ligand, one N atom of a bidentate dicyanamide anion and one N atom of a monodentate dicyanamide anion [Cu—N = 1.9760 (15)–2.0157 (15) Å]. The apical position is occupied by an N atom of a bidentate dicyanamide anion, located 2.2468 (16) Å from the Cu atom, thus forming a one‐dimensional polymeric chain. 相似文献
6.
Hassan Allouchi Michel Cotrait Bernard Jousseaume Marie‐Claude Rascle Thierry Toupance 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(6):m363-m364
In the title compound, [Sn(C3H4F3)2Cl2(C5H5N)2], the Sn atom lies on an inversion centre and is octahedrally coordinated by two Cl atoms, two trifluoropropyl groups and two N atoms in an all‐trans configuration. The electronegative trifluoropropyl groups increase the electrophilic properties of the Sn atom, and the Sn—Cl and Sn—N bonds are shortened in comparison with those reported for analogous compounds. 相似文献
7.
Yoshitaro Miyashita Nagina Mahboob Satoko Tsuboi Yasunori Yamada Kiyoshi Fujisawa Ken‐ichi Okamoto 《Acta Crystallographica. Section C, Structural Chemistry》2001,57(5):558-559
The Re atom in [Re(C9H6N2)Cl3(C18H15P)] is octahedrally coordinated by three Cl atoms in facial positions, two N atoms from 8‐imidoquinoline (imq) and one P atom from triphenylphosphine. The Re—N(imido) distance [1.760 (9) and 1.772 (8) Å] for imq is very short and implies double‐bond character. The trans influence of the P atom is indicated. Intra‐ and intermolecular π–π interactions between the π‐rings in the complex are also observed. 相似文献
8.
trans‐Diaquabis(5‐carboxy‐1H‐imidazole‐4‐carboxylato‐κ2N3,O4)cobalt(II) 4,4′‐bipyridine solvate
Rong Cao Yu‐Ling Wang Wen‐Hua Bi 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(12):m609-m611
In the title compound, [Co(C5H3N2O4)2(H2O)2]·C10H8N2, the Co atom is trans‐coordinated by two pairs of N and O atoms from two monoanionic 4,5‐dicarboxyimidazole ligands, and by two O atoms from two coordinated water molecules, in a distorted octahedral geometry. The 4,4′‐bipyridine solvent molecule is not involved in coordination but is linked by an N—H⋯N hydrogen bond to the neutral [Co(C5H3N2O4)2(H2O)2] molecule. Both molecules are located on inversion centers. The crystal packing is stabilized by N—H⋯N and O—H⋯O hydrogen bonds, which produce a three‐dimensional hydrogen‐bonded network. Offset π–π stacking interactions between the pyridine rings of adjacent 4,4′‐bipyridine molecules were observed, with a face‐to‐face distance of 3.345 (1) Å. 相似文献
9.
Miao Du Zhi‐Liang Shang Qiang Xu Ruo‐Hua Zhang Xue‐Bing Leng Xian‐He Bu 《Acta Crystallographica. Section C, Structural Chemistry》2000,56(7):769-770
The crystal structure of the title compound, [CoCl‐(C16H26N6)]ClO4, consists of discrete [CoCl(C16H26N6)]+ cations and perchlorate anions. The five‐coordinate CoII atom has four nitrogen donors from the new mesocyclic ligand 1,5‐bis(1‐methyl‐1H‐imidazol‐2‐ylmethyl)‐1,5‐diazacyclooctane [Co—N 2.046 (3)–2.214 (4) Å], and a chloride anion at the apical site [Co—Cl 2.3184 (13) Å]. The coordination geometry of the complex is essentially square pyramidal. The mesocyclic ligand takes a boat–chair configuration and the two imidazole pendants are not coplanar. The dihedral angle between the two imidazole planes is 15.97°. An H atom from the 1,5‐diazacyclooctane group effectively blocks the axial coordination site opposite the Cl ligand. 相似文献
10.
Cristina Aller Jesús Castro Paulo Prez‐Lourido Elena Labisbal Jos Arturo García‐Vzquez 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(3):m155-m157
In the title compound, [CuCl(C7H7O3S)(C12H8N2)(H2O)], the central Cu atom is coordinated by a water molecule, a chloride ion, an O‐monodentate p‐toluenesulfonate anion and an N,N′‐bidentate 1,10‐phenanthroline ligand. The copper environment is best described as a slightly distorted square pyramid, with bond distances Cu—Cl 2.2282 (9) Å, Cu—OW 1.984 (3) Å, and Cu—N 2.006 (3) and 2.028 (3) Å; the apical Cu—O distance is 2.281 (2) Å. In the supramolecular structure, π–π‐stacking stabilization is observed, and classical and non‐classical hydrogen bonds also play an important role. 相似文献
11.
Jun Luo Bao‐Shu Liu Xi‐Geng Zhou Lin‐Hong Weng Yan‐Rong Li Hui‐Xia Wu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(10):m520-m522
Two new complexes, [Co(C2N3)2(C8H6N2)2], (I), and [Cu(C2N3)2(C8H6N2)2], (II), are reported. They are essentially isomorphous. Complex (I) displays distorted octahedral geometry, with the Co atom coordinated by four dicyanamide nitrile N atoms [Co—N = 2.098 (3) and 2.104 (3) Å] in the basal plane, along with two monodentate quinoxaline N atoms [Co—N = 2.257 (2) Å] in the apical positions. In complex (II), the Cu atom is surrounded by four dicyanamide nitrile N atoms [Cu—N = 2.003 (3) and 2.005 (3) Å] in the equatorial plane and two monodentate quinoxaline N atoms [Cu—N = 2.479 (3) Å] in the axial sites, to form a distorted tetragonal–bipyramidal geometry. The metal atoms reside on twofold axes of rotation. Neighbouring metal atoms are connected via double dicyanamide bridges to form one‐dimensional infinite chains. Adjacent chains are then linked by π–π stacking interactions of the quinoxaline molecules, resulting in the formation of a three‐dimensional structure. 相似文献
12.
Satoko Wada Hidetaka Yuge Takeshi Ken Miyamoto 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(9):m369-m370
The stable title trifluoromethyl‐substituted carbenyl metalloporphyrin, [Ru(C15H8F6)(C48H36N4)], has a five‐coordinate Ru atom which is displaced from the porphyrin N4 plane towards the axial carbene ligand by 0.230 (3) Å. The Ru—C(carbene) bond coincides with a crystallographic twofold axis and its length of 1.841 (6) Å is notably shorter than the value of 1.868 (3) Å in the pyridine adduct. 相似文献
13.
Muharrem Diner Osman Dayan Bekir etinkaya Namk
zdemir 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(9):m398-m400
In the title compound, [CoCl2(C11H15N3O2)], the CoII ion is five‐coordinated in a strongly distorted square‐pyramidal arrangement, with one of the two Cl atoms located in the apical position, and the other Cl atom and the three N‐donor atoms of the tridentate methyloxime ligand located in the basal plane. The non‐H atoms, except for the Cl atoms, lie on a mirror plane. The two equatorial Co—Noxime distances are almost equal (mean 2.253 Å) and are substantially longer than the equatorial Co—Npyridine bond [2.0390 (19) Å]. The structure is stabilized by intra‐ and intermolecular C—H⋯Cl contacts, which involve one of the methyl C atoms belonging to the methyloxime groups. 相似文献
14.
Chengbing Ma Feng Chen Changneng Chen Qiutian Liu 《Acta Crystallographica. Section C, Structural Chemistry》2003,59(12):m516-m518
In the title compound, [Mn(C5H3N2O4)2(H2O)2], the MnII atom lies on an inversion centre, is trans‐coordinated by two N,O‐bidentate 1H‐imidazole‐4,5‐dicarboxylate monoanionic ligands [Mn—O = 2.202 (3) Å and Mn—N = 2.201 (4) Å] and two water molecules [Mn—O = 2.197 (4) Å], and exhibits a distorted octahedral geometry, with adjacent cis angles of 76.45 (13), 86.09 (13) and 89.20 (13)°. The complete solid‐state structure can be described as a three‐dimensional supramolecular framework, stabilized by extensive hydrogen‐bonding interactions involving the coordinated water molecules, the carboxy O atoms and the protonated imidazole N atoms of the imidazole‐4,5‐dicarboxylate ligands. 相似文献
15.
Ligia Gomes John Nicolson Low Mrio A. D. C. Valente Cristina Freire Baltazar Castro 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(7):m293-m296
The title complex, [Cu(C12H9N2O)(C2H3O2)(C12H10N2O)], is a neutral CuII complex with a primary N3O2 coordination sphere. The Cu centre coordinates to both a deprotonated and a neutral molecule of N‐phenylpyridine‐2‐carboxamide and also to an acetate anion. The coordination around the metal centre is asymmetric, the deprotonated ligand providing two N donor atoms [Cu—N = 1.995 (2) and 2.013 (2) Å] and the neutral ligand providing one N and one O donor atom to the coordination environment [Cu—N = 2.042 (2) Å and Cu—O = 2.2557 (19) Å], the fifth donor being an O atom of the acetate ion [Cu—O = 1.9534 (19) Å]. The remaining O atom from the acetate ion can be considered as a weak donor atom [Cu—O = 2.789 (2) Å], conferring to the Cu complex an asymmetric octahedral geometry. The crystal structure is stabilized by intermolecular N—H...O, C—H...O and C—H...π interactions. 相似文献
16.
Chengbing Ma Cheng Fan Changneng Chen Qiutian Liu 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(11):m553-m555
In the title compound [systematic name: aqua(1,10‐phenanthroline‐κ2N,N′)(pyridine‐2,6‐dicarboxylato‐κ3O2,N,O6)manganese(II) monohydrate, [Mn(C7H3NO4)(C12H8N2)(H2O)]·H2O, the manganese(II) centre is surrounded by one bidentate phenanthroline ligand [Mn—N = 2.248 (3) and 2.278 (3) Å], one tridentate dipicolinate ligand [Mn—N = 2.179 (3) Å, and Mn—O = 2.237 (2) and 2.266 (2) Å] and one water molecule [Mn—O = 2.117 (3) Å], and it exhibits a strongly distorted octahedral geometry, with trans angles ranging from 144.12 (9) to 158.88 (11)°. Extensive intermolecular hydrogen‐bonding interactions involving coordinated and uncoordinated water molecules and the carboxyl O atoms of the dipicolinate ligand, as well as a stacking interaction involving the phenanthroline rings, are observed in the crystal structure. 相似文献
17.
Ivan V. Korendovych Elena V. Rybak‐Akimova 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(2):m82-m84
The crystal structure of the title compound, [MnCl(C28H22N2O2)(C2H6O)], has been determined at 173 (2) K in the non‐centrosymmetric space group P212121. The asymmetric unit contains two molecular units. An intermolecular O—H⋯Cl hydrogen bond is formed between the OH group of an ethanol molecule coordinated to the Mn atom and the coordinated Cl− anion, and so polymeric chains of Mn‐containing fragments are formed [O—H⋯Cl = 3.1281 (16) and 3.1282 (15) Å]. The Mn atoms have a pseudo‐octahedral coordination sphere, with the four donor atoms of the Schiff base forming an equatorial plane [Mn—O distances are 1.8740 (13), 1.8717 (13), 1.8749 (13) and 1.8823 (13) Å, and Mn—N distances are 1.9868 (15), 1.9910 (14), 1.9828 (15) and 1.9979 (14) Å]. The axial positions are occupied by an ethanol molecule [Mn—O distances of 2.3069 (15) and 2.3130 (15) Å] and a Cl− ligand [Mn—Cl distances of 2.5732 (6) and 2.5509 (6) Å]. 相似文献
18.
Yasunori Muranishi Nobuo Okabe 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(12):m578-m580
trans‐Diaquabis(isoquinoline‐1‐carboxylato‐κ2N,O)cobalt(II) dihydrate, [Co(C10H6NO2)2(H2O)2]·2H2O, and trans‐diaquabis(isoquinoline‐1‐carboxylato‐κ2N,O)nickel(II) dihydrate, [Ni(C10H6NO2)2(H2O)2]·2H2O, contain the same isoquinoline ligand, with both metal atoms residing on a centre of symmetry and having the same distorted octahedral coordination. In the former complex, the Co—O(water) bond length in the axial direction is 2.167 (2) Å, which is longer than the Co—O(carboxylate) and Co—N bond lengths in the equatorial plane [2.055 (2) and 2.096 (2) Å, respectively]. In the latter complex, the corresponding bond lengths for Ni—O(water), Ni—O(carboxylate) and Ni—N are 2.127 (2), 2.036 (2) and 2.039 (3) Å, respectively. Both crystals are stabilized by similar stacking interactions of the ligand, and also by hydrogen bonds between the hydrate and coordinated water molecules. 相似文献
19.
Manfredo Hrner Lorenzo do C. Visentin Marisa Dahmer Jairo Bordinhao 《Acta Crystallographica. Section C, Structural Chemistry》2002,58(5):m286-m287
In the title complex, [Pd(C12H8FN4O2)2(C5H5N)2] or trans‐[Pd(FC6H4N=N—NC6H4NO2)(C5H5N)2], the Pd atom lies on a centre of inversion in space group P. The coordination geometry about the Pd2+ ion is square planar, with two deprotonated 3‐(2‐fluorophenyl)‐1‐(4‐nitrophenyl)triazenide ions, FC6H4N=N—NC6H4NO2?, acting as monodentate ligands (two‐electron donors), while two neutral pyridine molecules complete the metal coordination sphere. The whole triazenide ligand is not planar, with the largest interplanar angle being 16.8 (5)° between the phenyl ring of the 2‐fluorophenyl group and the plane defined by the N=N—N moiety. The Pd—N(triazenide) and Pd—N(pyridine) distances are 2.021 (3) and 2.039 (3) Å, respectively. 相似文献
20.
Li‐Ping Lu Pin Yang Shi‐Dong Qin Miao‐Li Zhu 《Acta Crystallographica. Section C, Structural Chemistry》2004,60(5):m219-m220
The crystal structure of the title compound, [Cu(C4H10N5)2]·H2O, contains two independent copper N,N‐dimethylbiguanide complex units, each with square‐planar coordination of the Cu atom by four N atoms. The two complexes have different symmetry, with one Cu atom lying on an inversion centre and the other on a twofold rotation axis. The Cu—N bond lengths are 1.923 (2) and 1.950 (2) Å in the centrosymmetric complex, and 1.928 (2) and 1.938 (2) Å in the non‐centrosymmetric complex. The crystal structure is stabilized by N—H⋯O, O—H⋯N and N—H⋯N hydrogen bonds; each water molecule forms four hydrogen bonds involving three different Cu complexes. 相似文献