TY - JOUR
T1 - Synthesis and crystal structure of trichromium metal string complex
AU - Li, Hui
AU - Lee, Gene Hsiang
AU - Peng, Shie Ming
PY - 2004/11/22
Y1 - 2004/11/22
N2 - The synthesis, crystal structures and molecular packing of the three trichromium metal string complexes [Cr 3(dpa) 4Cl(OC 2H 5)]OH·C 2H 5OC 2H 5·2.5H 2O (1), [Cr 3(dpa) 4(OH) 2]ClO 4·3H 2O (2) and [Cr 3(dpa) 4F 2Na(H 2O)BF 4]BF 4·CH 3OH (3) (dpa -=bis(2- pyridyl)amido) have been studied. The crystal structure data for 1: C 46H 54ClCr 3N 12O 5.5, monoclinic, P2 1/c, a=19.9998(4) , b=15.9756(3) , c=16.9943(3) , β=114.0548(8)°, Z=4, R 1=0.0791, wR 2=0.1927; for 2: C 40H 40ClCr 3N 12O 9, orthogonal, Pna2 1, a=18.3373(2) , b=16.8220(2) , c=14.0268(2) , Z=4, R 1=0.0683, wR 2=0.1804; for 3: C 41H 38B 2Cr 3F 10N 12NaO 2, monoclinic, P2 1/n, a=12.3902(1) , b=16.2081(2) , c=23.4119(3) , β=98.8725(6)°, Z=4, R 1=0.0670, wR 2=0.1568. The structure data were collected using graphite monochromated molybdenum Kα radiation and refined using full-matrix least square techniques on F 2. The magnetic property of complex 1 was carried out on polycrystalline samples with a SQUID magnetometer. The IR, FAB-MS mass spectra of all complexes were also measured. In the three complexes, trichromium metal string complexes can be considered as mini-1D asymmetrically chains since the distance between the two axial ligands is around 1 nm. The types of hydrogen bonding in three complexes are C-H⋯O, C-H⋯Cl, C-H⋯F and O-H⋯O). 1 and 2 have a one-dimensional double-chain structures. 1 is a rare example of three-dimensional novel sandwich structure. In 3, one of the axial ligand, F - acts as a bridge ligand to link the sodium ion to the Cr 3 axis with a bond angle of Cr(1)-F(1)-Na in 169.90(13)°. It can be considered as a metal string complex with an extra long axis.
AB - The synthesis, crystal structures and molecular packing of the three trichromium metal string complexes [Cr 3(dpa) 4Cl(OC 2H 5)]OH·C 2H 5OC 2H 5·2.5H 2O (1), [Cr 3(dpa) 4(OH) 2]ClO 4·3H 2O (2) and [Cr 3(dpa) 4F 2Na(H 2O)BF 4]BF 4·CH 3OH (3) (dpa -=bis(2- pyridyl)amido) have been studied. The crystal structure data for 1: C 46H 54ClCr 3N 12O 5.5, monoclinic, P2 1/c, a=19.9998(4) , b=15.9756(3) , c=16.9943(3) , β=114.0548(8)°, Z=4, R 1=0.0791, wR 2=0.1927; for 2: C 40H 40ClCr 3N 12O 9, orthogonal, Pna2 1, a=18.3373(2) , b=16.8220(2) , c=14.0268(2) , Z=4, R 1=0.0683, wR 2=0.1804; for 3: C 41H 38B 2Cr 3F 10N 12NaO 2, monoclinic, P2 1/n, a=12.3902(1) , b=16.2081(2) , c=23.4119(3) , β=98.8725(6)°, Z=4, R 1=0.0670, wR 2=0.1568. The structure data were collected using graphite monochromated molybdenum Kα radiation and refined using full-matrix least square techniques on F 2. The magnetic property of complex 1 was carried out on polycrystalline samples with a SQUID magnetometer. The IR, FAB-MS mass spectra of all complexes were also measured. In the three complexes, trichromium metal string complexes can be considered as mini-1D asymmetrically chains since the distance between the two axial ligands is around 1 nm. The types of hydrogen bonding in three complexes are C-H⋯O, C-H⋯Cl, C-H⋯F and O-H⋯O). 1 and 2 have a one-dimensional double-chain structures. 1 is a rare example of three-dimensional novel sandwich structure. In 3, one of the axial ligand, F - acts as a bridge ligand to link the sodium ion to the Cr 3 axis with a bond angle of Cr(1)-F(1)-Na in 169.90(13)°. It can be considered as a metal string complex with an extra long axis.
KW - Chromium
KW - Crystal structure
KW - Hydrogen bonding
KW - Metal string complex
KW - Molecular packing
UR - http://www.scopus.com/inward/record.url?scp=6344285699&partnerID=8YFLogxK
U2 - 10.1016/j.molstruc.2004.07.037
DO - 10.1016/j.molstruc.2004.07.037
M3 - Article
AN - SCOPUS:6344285699
SN - 0022-2860
VL - 707
SP - 179
EP - 186
JO - Journal of Molecular Structure
JF - Journal of Molecular Structure
IS - 1-3
ER -