Home Influence of coordinating anions on the stereochemistry of mixed-ligand copper (II) compounds. Crystal structure and spectra of bromo (3-cyano-2,4-pentanedionato) (N,N-dimethyl-1,2-diaminoethane)copper(II)
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Influence of coordinating anions on the stereochemistry of mixed-ligand copper (II) compounds. Crystal structure and spectra of bromo (3-cyano-2,4-pentanedionato) (N,N-dimethyl-1,2-diaminoethane)copper(II)

Published/Copyright: July 28, 2010
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Zeitschrift für Kristallographie - Crystalline Materials
From the journal Zeitschrift für Kristallographie - Crystalline Materials Volume 210 Issue 2

Abstract

The compound [Cu(CN-acac)Me2en(Br)] (Me2en denotes N,N-dimethyl-1,2-diaminoethane) was prepared and investigated by means of structural (X-Ray diffraction) and spectroscopic (IR and electronic) measurements. The compound crystallizes in the monoclinic space group P21/c with a = 5.959(1) Å, b = 7.465(2) Å, c = 19.338(3) Å, β = 90.89(2)° and Z = 4. The structure consists of discrete [Cu(CN-acac)Me2en(Br)] monomeric units, in which copper is five-coordinated. The 1,2-diamine adopts the gauche conformation with a torsional angle of 51.31°, coordinates as bidentate ligand through the nitrogen atoms, and attains the λ configuration. The anion of the 3-cyano-2,4-pentanedione, CN-acac−, is bonded through the oxygen atoms and the six-membered metallocyclic ring exhibits a semi chair conformation. The nitrogen and oxygen donor atoms form a square plane. Copper is also bonded to the bromine atom and a distorted square pyramidal structure around copper exists. The inequalities in the Cu–N distances suggest a second-order Jahn-Teller deformation while the elongation of the Cu–Br bonds implicates d-s orbital mixing. The ligand field excitation energy is appreciably lower than that observed in the [Cu(CN-acac)Me2en]+ entity. The principal stretching vibrations are assigned and discussed in the light of the structure.

Published Online: 2010-7-28
Published in Print: 1995-2-1

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Articles in the same Issue

  1. Perfect planar antiphase-domain structures: a shift-lattice interpretation
  2. TlIn5S6: ein neues, gemischtvalentes ternäres Chalkogenid und sein kristallchemisches Umfeld
  3. Crystal structure of KBe2BO3F2
  4. The crystal structures of Mo4Al17 and Mo5Al22
  5. Influence of coordinating anions on the stereochemistry of mixed-ligand copper (II) compounds. Crystal structure and spectra of bromo (3-cyano-2,4-pentanedionato) (N,N-dimethyl-1,2-diaminoethane)copper(II)
  6. Structure of 2′-hydroxy flavone1
  7. Steric effects in the structure of mixed-ligand nickel (II) chelates. Crystal and molecular structure of [N,N′-diphenyl-1,2-diaminoethane)-bis(1,1,1,5,5,5,-hexafluoro-2,4-pentanedionato)nickel(II)]
  8. Crystal and molecular structure of noscapine 1
  9. Crystal and molecular structure of L-(S)-histidine dihydrochloride (monoclinic form)
  10. Crystal and molecular structure of P,P-diphenyl-N-methyl-thiophosphinylthioformamide
  11. Evidence of solvent coordination in mixed-ligand copper(II) chelates. Crystal and molecular structure of aquo(N,N,N′,N′-tetramethyl-1,2-diaminoethane) (3-cyano-2,4-pentanedionato)copper(II) perchlorate
  12. Structure of (TEA)2CuCl4 and hydration
  13. Crystal structure of guanidinium cyclodecaphosphate tetrahydrate
  14. Lewis acidic/Lewis basic character of the bis(triphenyltin) succinate moiety in the hexanuclear complex, [bis(triphenyltin) succinate · 2quinoline N-oxide] · 2[bis(triphenyltin) succinate]*
  15. Novel aspects in structures of copper (II) Schiff base complexes
  16. Crystal structure of dipotassium lithium catena-di-μ-phosphidoaluminate, K2LiAlP2
  17. Crystal structure of sodium potassium antimonide triantimonidogallate, K6Na3Sb[GaSb3]
  18. Crystal structure of lithium pentachlorodiytterbate(II), LiYb2Cl5
  19. Crystal structure of tricaesium enneachlorodilutetate(III), Cs3Lu2Cl9
  20. Crystal structure of cyanoacetato-tetrahydrofuran-tris(3-phenylpyrazol-1-yl) hydroborato-cadmium, C34H32BCdN7O3
  21. Crystal structure of acetato-1,5,9-triazacyclododecane-zinc tetraphenylborate, [(C9H21N3)(CH3CO2)Zn] [(C6H5)4B]
  22. Crystal structure of the tetraacetate of erythro-1,2-bis(4-hydroxy-3-methoxyphenyl)-1,3-propanediol, C25H28O10
  23. Crystal structure of 1-methylpyridinium-2-dithiocarboxylate, C7H7NS2
  24. Crystal structure of 1,6-dimethylpyridinium-2-dithiocarboxylate, C8H9NS2
  25. Crystal structure of 4,5-dihydro-1H,3H-1-benzazepin-2-one, C10H11NO
  26. Crystal structure of hexakis(ethanolammonium) decavanadate dihydrate,(C2H8NO)6(V10O28)(H2O)2
  27. Crystal structure of N-phenyl-7,8-benzo-5-(E)-methylmethylene-2,3-diazatricyclo[4.4.0.04,9]non-2-ene-dicarboximide, C21H17N3O2
  28. Crystal structure of N-phenyl-2,3-diaza-5-(E)-carbomethoxy-methylene-tricyclo[4.3.0.04,9]nonane-2,3-dicarboximide, C18H17N3O4
  29. Crystal structure of potassium cadmium thallium (14/9/21), K14Cd9Tl21
https://doi.org/10.1524/zkri.1995.210.2.100

Articles in the same Issue

  1. Perfect planar antiphase-domain structures: a shift-lattice interpretation
  2. TlIn5S6: ein neues, gemischtvalentes ternäres Chalkogenid und sein kristallchemisches Umfeld
  3. Crystal structure of KBe2BO3F2
  4. The crystal structures of Mo4Al17 and Mo5Al22
  5. Influence of coordinating anions on the stereochemistry of mixed-ligand copper (II) compounds. Crystal structure and spectra of bromo (3-cyano-2,4-pentanedionato) (N,N-dimethyl-1,2-diaminoethane)copper(II)
  6. Structure of 2′-hydroxy flavone1
  7. Steric effects in the structure of mixed-ligand nickel (II) chelates. Crystal and molecular structure of [N,N′-diphenyl-1,2-diaminoethane)-bis(1,1,1,5,5,5,-hexafluoro-2,4-pentanedionato)nickel(II)]
  8. Crystal and molecular structure of noscapine 1
  9. Crystal and molecular structure of L-(S)-histidine dihydrochloride (monoclinic form)
  10. Crystal and molecular structure of P,P-diphenyl-N-methyl-thiophosphinylthioformamide
  11. Evidence of solvent coordination in mixed-ligand copper(II) chelates. Crystal and molecular structure of aquo(N,N,N′,N′-tetramethyl-1,2-diaminoethane) (3-cyano-2,4-pentanedionato)copper(II) perchlorate
  12. Structure of (TEA)2CuCl4 and hydration
  13. Crystal structure of guanidinium cyclodecaphosphate tetrahydrate
  14. Lewis acidic/Lewis basic character of the bis(triphenyltin) succinate moiety in the hexanuclear complex, [bis(triphenyltin) succinate · 2quinoline N-oxide] · 2[bis(triphenyltin) succinate]*
  15. Novel aspects in structures of copper (II) Schiff base complexes
  16. Crystal structure of dipotassium lithium catena-di-μ-phosphidoaluminate, K2LiAlP2
  17. Crystal structure of sodium potassium antimonide triantimonidogallate, K6Na3Sb[GaSb3]
  18. Crystal structure of lithium pentachlorodiytterbate(II), LiYb2Cl5
  19. Crystal structure of tricaesium enneachlorodilutetate(III), Cs3Lu2Cl9
  20. Crystal structure of cyanoacetato-tetrahydrofuran-tris(3-phenylpyrazol-1-yl) hydroborato-cadmium, C34H32BCdN7O3
  21. Crystal structure of acetato-1,5,9-triazacyclododecane-zinc tetraphenylborate, [(C9H21N3)(CH3CO2)Zn] [(C6H5)4B]
  22. Crystal structure of the tetraacetate of erythro-1,2-bis(4-hydroxy-3-methoxyphenyl)-1,3-propanediol, C25H28O10
  23. Crystal structure of 1-methylpyridinium-2-dithiocarboxylate, C7H7NS2
  24. Crystal structure of 1,6-dimethylpyridinium-2-dithiocarboxylate, C8H9NS2
  25. Crystal structure of 4,5-dihydro-1H,3H-1-benzazepin-2-one, C10H11NO
  26. Crystal structure of hexakis(ethanolammonium) decavanadate dihydrate,(C2H8NO)6(V10O28)(H2O)2
  27. Crystal structure of N-phenyl-7,8-benzo-5-(E)-methylmethylene-2,3-diazatricyclo[4.4.0.04,9]non-2-ene-dicarboximide, C21H17N3O2
  28. Crystal structure of N-phenyl-2,3-diaza-5-(E)-carbomethoxy-methylene-tricyclo[4.3.0.04,9]nonane-2,3-dicarboximide, C18H17N3O4
  29. Crystal structure of potassium cadmium thallium (14/9/21), K14Cd9Tl21
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