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O,O′-Diethyl {(Z)-[(2-chloro­phen­yl)(cyano)methyl­ene]amino­oxy}thio­phospho­nate

The title mol-ecule, C(12)H(14)ClN(2)O(3)PS, has a cis configuration with respect to the C=N bond. Inter-molecular C-H⋯O inter-actions inter-connect the mol-ecules into chains along the c axis. The chains are further connected into a two-dimensional network parallel to the bc plane by weak π-π inter-actions between adjacent aromatic rings (centroid-centroid distance = 3.772Å).

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O to Z flaps in facial reconstructions*

Local flaps are the standard procedure to reconstruct facial defects. As it occurs in any surgical procedure, the incision should be planned so that scars are located in the minimum skin tension lines. We report two cases of O to Z flaps in the supra and infraciliary regions. One of them is a hatchet flap.

On the Zeros of Meromorphic Functions of the Form F(z) = ~-~o~ ~a K=l Z-z~

We study the zero distribution of meromorphic functions of the formf(z) = ~--]ff=l at where a t. > 0. Noting thatfts the complex conjugate of Z--Z k the gradient of a logarithmic potential, our results have application in the study of the equilibrium points of such a potential. Furthermore, answering a question of Hayman, we also show that the derivative of a meromorphic function of order at mo...

[(Z)-O-Methyl-N-propyl­thio­carbamato-κS](triphenyl­phosphine-κP)gold(I)

In the title compound, [Au(C(5)H(10)NOS)(C(18)H(15)P)], the Au(I) atom is linearly coordinated within an S,P-donor set with distortion from an ideal linear geometry [S-Au-P = 176.71 (6)°] due to an intra-molecular Au⋯O contact [2.943 (4) Å]. In the crystal structure, centrosymmetrically related mol-ecules associate via C-H⋯O inter-actions.