The apical position is occupied by a water molecule.
The diffraction analysis revealed that the ligand binds the metals (Ni II), Pd II)) in monoanionic and Pt II) in dianionic tridentate (N,N,N) fashion offering distorted square planar geometry where fourth position is occupied by one PPh3 group.
The diffraction analysis revealed that the monoanionic ligand binds with palladium (II) in (N, N, S) fashion in a distorted square planar geometry where the fourth position is occupied by one tri phenyl phosphine group.
In complex 1, the central Cu II) atom is surrounded by four Npyrazol atoms from two units of bis(pyrazol-1-yl)acetate and the axial position is occupied by Oacetate atom, thus exhibiting a square-pyramidal geometry with N4O coordination environment.
Here that position is occupied by an auctioneer named Simon de Pury, the chairman of an auction house known for its contemporary-art sales, and a charming presence in a double-breasted suit who comports himself as if a very well-liked maître d'hôtel.
The axial position is occupied by one of the nitrogens of a BIPY molecule.
In 4 the axial position is occupied by O3 of the 5-BTPC.
For square pyramidal complexes (1,2 & 4), the apical position is occupied by H2O, NO3- and Br-, respectively.
The MCDL can also specify chirality of atomic centers with only three substituents in those cases where the fourth substituent position is occupied by an electron pair.
