Paramagnetic triple state

The iodine-doped, paramagnetic compound [Pc2ln](13)2/3 can be synthesized directly from In T1 alloy and 1,2-dicyanobenzene under a stream of iodine. " The solid-state structure features onedimensional stacks of [Pc2ln] columns and I3 chains. A triple-decker indium(III) phthalocyanine complex [Pc3ln2], which is diamagnetic, has been obtained by reacting In-Sn alloy with 1,2-dicyanobenzene at 210 Indium atoms are six-coordinate, and are located between the... 

Nitric oxide in its gaseous state exists as a monomeric species which possesses an impaired electron, rendering the molecule paramagnetic. In terms of simple MO theory this electron is placed in a Ti-antibonding orbital (Figure 1) so that electron configuration is (bond order is 2.5, consistent with the interatomic distance of 1.15 A which is intermediate between the triple bond distance in NO " (see below) of 1.06 A and representative double bond distances of about 1.20 A. ... 

A summary of most of the known states of standard [NiFe] hydrogenases and their proposed relationships is depicted in Fig. 2. Four S = 1/2 paramagnetic states have been detected by EPR they are called Ni - A, Ni - B, Ni - C and Ni - L because the spin density is mainly localized on the Ni. Five diamagnetic states, called Ni-SU, Ni- S , Ni-SI, SI-CO and Ni-R, have been characterized by FTIR, thanks to the vibration bands of the triple bonds in the CO and CN ligands found in the 1900-2100 cm range. The active Ni - C and Ni-R states are directly involved in the catalytic cycle whereas the unready Ni - A and Ni - SU states are inactive and require a long reductive activation. The ready Ni - B and Ni - SI states are also inactive but can be immediately activated by H2 in the absence of O2. An additional active... 

There are many experimental techniques for the determination of the Spin-Hamiltonian parameters g, Ux, J. D, E. Often applied are Electron Paramagnetic or Spin Resonance (EPR, ESR), Electron Nuclear Double Resonance (ENDOR) or Triple Resonance, Electron-Electron Double Resonance (ELDOR), Nuclear Magnetic Resonance (NMR), occasionally utilizing effects of Chemically Induced Dynamic Nuclear Polarization (CIDNP), Optical Detections of Magnetic Resonance (ODMR) or Microwave Optical Double Resonance (MODR), Laser Magnetic Resonance (LMR), Atomic Beam Spectroscopy, and Muon Spin Rotation (/iSR). The extraction of data from the spectra varies with the methods, the system studied and the physical state of the sample (gas, liquid, unordered or ordered solid). For these procedures the reader is referred to the monographs (D). Further, effective magnetic moments of free radicals are often obtained from static... 

---