Synthesis and characterization of macrocyclic nickel(II) complexes with α-methylbenzyl groups as chiral pendants

Inorganic Chemistry Communications

Volumn 11, Issue 7, 2008, Pages 745-748

  Han, Jeong Hyeong ^a   Cha, Min Ju ^a   Kim, Bong Gon ^b   Kim, Seog K ^c   Min, Kil Sik ^a  

^a Kyungpook National University   (South Korea)

^b Gyeongsang National University   (South Korea)

^c Yeungnam University   (South Korea)

Author keywords

Chirality; Circular dichroism; Crystal structure; Macrocyclic ligand; Nickel(II) complex

Indexed keywords

EID: 44749085798     PISSN: 13877003     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.inoche.2008.03.027     Document Type: Article

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18. -1) = 330(28, sh), 452(49). Safety note: Although we have experienced no problem with the compounds reported in this work, perchlorate salts of metal complexes with organic ligands are often explosive and should be handled with great caution.
19. int = 0.0486), 6134 observed[I > 2σ(I)], which refined to R1 = 0.0689, wR2 = 0.1275, and for all data R1 = 0.0789, wR2 = 0.1310.
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24. For 2, av. Ni-N bond distance is 1.927(2) Å, and the C-N bond distance and the C-N-C angle involving the N3 and N6 are average 1.456(2) Å and 108.4(4)-117.7(4)°, respectively. The NH groups of the macrocycle are involved in the hydrogen bonding interaction with oxygen atoms of perchlorate anions: N1⋯O2 = 3.130(6) Å, ∠N1-H1-O2 = 157°; N2⋯O7 = 3.012(6) Å, ∠N2-H2-O7 = 152°; N4⋯O8 = 3.178(6) Å, ∠N4-H4-O8 = 158°; N5⋯O3 = 2.970(6) Å, ∠N5-H5-O3 = 151°. Between the pendant benzene groups, the intercentroid distance is 4.575(6) Å, and the dihedral angle is 42.59(17)°.
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