188033-25-2

Basic information

• Product Name: triethylammonium trans-dichloro[1,2-bis(2-pyridinecarboxamide)benzenato(-2)-η4-N(py),N(am),N(am),N(py)]vanadate(III)
• CAS NO: 188033-25-2
• Molecular Weight: 540.366
• Mol File: 188033-25-2.mol

Chemical Properties

• CAS DataBase Reference: triethylammonium trans-dichloro[1,2-bis(2-pyridinecarboxamide)benzenato(-2)-η4-N(py),N(am),N(am),N(py)]vanadate(III)(CAS DataBase Reference)
• NIST Chemistry Reference: triethylammonium trans-dichloro[1,2-bis(2-pyridinecarboxamide)benzenato(-2)-η4-N(py),N(am),N(am),N(py)]vanadate(III)(188033-25-2)
• EPA Substance Registry System: triethylammonium trans-dichloro[1,2-bis(2-pyridinecarboxamide)benzenato(-2)-η4-N(py),N(am),N(am),N(py)]vanadate(III)(188033-25-2)

Safety Data

• Hazardous Substances Data: 188033-25-2(Hazardous Substances Data)

Upstream product

• 7718-98-1 vanadium(III) chloride 
• 67455-94-1 N,N-bis(2-pyridinecarboxamide)-1,2-benzene 
• 121-44-8 triethylamine 

Relevant articles and documents

Model investigations of vanadium-protein interactions: Novel vanadium(III) and oxovanadium(IV) compounds with the diamidate ligand 1,2-bis(2-pyridinecarboxamide)benzene (H2bpb)

Novel vanadium(III) and oxovanadium(IV) compounds with the diamidate ligand 1,2-bis(2-pyridinecarboxamide)benzene (H2bpb) were synthesized and structurally characterized. H2bpb is capable of binding to vanadium in either its anionic (dianionic-monoanionic) or its neutral form, resulting in complexes of various geometries and stoichiometries. The dianionic form (bpb2-), in NHEt3{trans-[VCl2(bpb)]} (1) and [VO(bpb)(H2O)]·0.5dmso·0.36CH3OH·0.13H2O (6·0.5dmso·0.36CH3OH·0.13H2O), acts as a planar tetradentate bis[N-amidate-N-pyridine] equatorial ligand. The monoanionic form (Hbpb-) behaves as an (N(py),O(am)) or (N(py),N(am)) chelator in [V(Hbpb)3]·2CHCl3 (2·2CHCl3) as well as a μ2-bridging-η4-(N(py),O(am)-N(py),N(am)) in [VOCl(Hbpb)]2·2CH3NO2 (3·2CH3NO2), while the neutral H2bpb behaves as a μ2-bridging-η4-bis(N(py),O(am)) in [VOCl(H2bpb)]2·1.04CH3OH·1.23thf·0.74H2O(4·1.04CH3OH·1.23thf·0.74H 2O). Compound 4·1.04CH3OH·1.23thf·0.74H2O crystallizes in the triclinic system P1, with (at 25 °C) a = 9.140(2) A, b = 11.058(2) A, c = 14.175(2) A, α = 99.013(5)°, β = 104.728(7)°, γ = 102.992(7)°, V = 1314.9(4) A3, Z = 1, while compound 6·0.5dmso·0.36CH3OH·0.13H2O crystallizes in the monoclinic space group P21/n with (at 25 °C) a = 11.054(5) A, b = 11.407(5) A, c = 16.964(7) A, β = 93.2(1)°, V = 2136(2) A3, Z = 4. Variable temperature magnetic susceptibility studies of the dimeric compounds 3·2CH3NO2 and 4·1.04CH3OH show g values for the V(IV) centers that are slightly smaller than 2.0 (as expected for d1 ions) and indicate small antiferromagnetic coupling between the two vanadium(IV) centers. Ab initio calculations were also carried out, providing results concerning the effect of the relative strength and the deformation energy involved in the η2-(N(py),N(am)) and η2-(N(py),O(am)) bonding modes in the ligation of Hbpb- to vanadium.